---
_id: '14779'
abstract:
- lang: eng
text: The presence of a developed boundary layer decouples a glacier's response
from ambient conditions, suggesting that sensitivity to climate change is increased
by glacier retreat. To test this hypothesis, we explore six years of distributed
meteorological data on a small Swiss glacier in the period 2001–2022. Large glacier
fragmentation has occurred since 2001 (−35% area change up to 2022) coinciding
with notable frontal retreat, an observed switch from down‐glacier katabatic to
up‐glacier valley winds and an increased sensitivity (ratio) of on‐glacier to
off‐glacier temperature. As the glacier ceases to develop density‐driven katabatic
winds, sensible heat fluxes on the glacier are increasingly determined by the
conditions occurring outside the boundary layer of the glacier, sealing the glacier's
demise as the climate continues to warm and experience an increased frequency
of extreme summers.
acknowledgement: This work was funded by the EU Horizon 2020 Marie Skłodowska-Curie
Actions Grant 101026058. The authors acknowl-edge the dedicated collection of field
data by many parties since 2001, including those acknowledged for the cited works
on Arolla Glacier. The authors would like to thank Fabienne Meier, Alice Zaugg,
Raphael Willi, Maria Grundmann, and Marta Corrà for assistance in the field for
the summers of 2021 and 2022. Off-glacier data provided by Grand Dixence SA (Arolla)
and MeteoSwiss are kindly acknowledged. Simone Fatichi is thanked for the provision
and support in the use of the Tethys-Chloris model. We thank Editor Mathieu Morlighem
and two anonymous reviewers whose comments have helped to improve the quality of
the manuscript.
article_number: e2023GL103043
article_processing_charge: No
article_type: original
author:
- first_name: Thomas E.
full_name: Shaw, Thomas E.
last_name: Shaw
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Michael
full_name: McCarthy, Michael
last_name: McCarthy
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Álvaro
full_name: Ayala, Álvaro
last_name: Ayala
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
orcid: 0000-0002-5554-8087
citation:
ama: Shaw TE, Buri P, McCarthy M, Miles ES, Ayala Á, Pellicciotti F. The decaying
near‐surface boundary layer of a retreating alpine glacier. Geophysical Research
Letters. 2023;50(11). doi:10.1029/2023gl103043
apa: Shaw, T. E., Buri, P., McCarthy, M., Miles, E. S., Ayala, Á., & Pellicciotti,
F. (2023). The decaying near‐surface boundary layer of a retreating alpine glacier.
Geophysical Research Letters. American Geophysical Union. https://doi.org/10.1029/2023gl103043
chicago: Shaw, Thomas E., Pascal Buri, Michael McCarthy, Evan S. Miles, Álvaro Ayala,
and Francesca Pellicciotti. “The Decaying Near‐surface Boundary Layer of a Retreating
Alpine Glacier.” Geophysical Research Letters. American Geophysical Union,
2023. https://doi.org/10.1029/2023gl103043.
ieee: T. E. Shaw, P. Buri, M. McCarthy, E. S. Miles, Á. Ayala, and F. Pellicciotti,
“The decaying near‐surface boundary layer of a retreating alpine glacier,” Geophysical
Research Letters, vol. 50, no. 11. American Geophysical Union, 2023.
ista: Shaw TE, Buri P, McCarthy M, Miles ES, Ayala Á, Pellicciotti F. 2023. The
decaying near‐surface boundary layer of a retreating alpine glacier. Geophysical
Research Letters. 50(11), e2023GL103043.
mla: Shaw, Thomas E., et al. “The Decaying Near‐surface Boundary Layer of a Retreating
Alpine Glacier.” Geophysical Research Letters, vol. 50, no. 11, e2023GL103043,
American Geophysical Union, 2023, doi:10.1029/2023gl103043.
short: T.E. Shaw, P. Buri, M. McCarthy, E.S. Miles, Á. Ayala, F. Pellicciotti, Geophysical
Research Letters 50 (2023).
date_created: 2024-01-10T09:28:34Z
date_published: 2023-06-16T00:00:00Z
date_updated: 2024-01-16T08:42:36Z
day: '16'
ddc:
- '550'
department:
- _id: FrPe
doi: 10.1029/2023gl103043
external_id:
isi:
- '000999436400001'
file:
- access_level: open_access
checksum: 391a3005c95340a0ae129ce4fbdf2bae
content_type: application/pdf
creator: dernst
date_created: 2024-01-16T08:35:02Z
date_updated: 2024-01-16T08:35:02Z
file_id: '14805'
file_name: 2023_GeophysicalResearchLetter_Shaw.pdf
file_size: 2529327
relation: main_file
success: 1
file_date_updated: 2024-01-16T08:35:02Z
has_accepted_license: '1'
intvolume: ' 50'
isi: 1
issue: '11'
keyword:
- General Earth and Planetary Sciences
- Geophysics
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Geophysical Research Letters
publication_identifier:
eissn:
- 1944-8007
issn:
- 0094-8276
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
status: public
title: The decaying near‐surface boundary layer of a retreating alpine glacier
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 50
year: '2023'
...
---
_id: '12581'
abstract:
- lang: eng
text: Topographic development via paraglacial slope failure (PSF) represents a complex
interplay between geological structure, climate, and glacial denudation. Southeastern
Tibet has experienced amongst the highest rates of ice mass loss in High Mountain
Asia in recent decades, but few studies have focused on the implications of this
mass loss on the stability of paraglacial slopes. We used repeat satellite- and
unpiloted aerial vehicle (UAV)-derived imagery between 1990 and 2020 as the basis
for mapping PSFs from slopes adjacent to Hailuogou Glacier (HLG), a 5 km long
monsoon temperate valley glacier in the Mt. Gongga region. We observed recent
lowering of the glacier tongue surface at rates of up to 0.88 m a−1 in the period
2000 to 2016, whilst overall paraglacial bare ground area (PBGA) on glacier-adjacent
slopes increased from 0.31 ± 0.27 km2 in 1990 to 1.38 ± 0.06 km2 in 2020. Decadal
PBGA expansion rates were ∼ 0.01 km2 a−1, 0.02 km2 a−1, and 0.08 km2 in the periods
1990–2000, 2000–2011, and 2011–2020 respectively, indicating an increasing rate
of expansion of PBGA. Three types of PSFs, including rockfalls, sediment-mantled
slope slides, and headward gully erosion, were mapped, with a total area of 0.75 ± 0.03 km2
in 2020. South-facing valley slopes (true left of the glacier) exhibited more
destabilization (56 % of the total PSF area) than north-facing (true right) valley
slopes (44 % of the total PSF area). Deformation of sediment-mantled moraine slopes
(mean 1.65–2.63 ± 0.04 cm d−1) and an increase in erosion activity in ice-marginal
tributary valleys caused by a drop in local base level (gully headward erosion
rates are 0.76–3.39 cm d−1) have occurred in tandem with recent glacier downwasting.
We also observe deformation of glacier ice, possibly driven by destabilization
of lateral moraine, as has been reported in other deglaciating mountain glacier
catchments. The formation, evolution, and future trajectory of PSFs at HLG (as
well as other monsoon-dominated deglaciating mountain areas) are related to glacial
history, including recent rapid downwasting leading to the exposure of steep,
unstable bedrock and moraine slopes, and climatic conditions that promote slope
instability, such as very high seasonal precipitation and seasonal temperature
fluctuations that are conducive to freeze–thaw and ice segregation processes.
article_processing_charge: No
article_type: original
author:
- first_name: Yan
full_name: Zhong, Yan
last_name: Zhong
- first_name: Qiao
full_name: Liu, Qiao
last_name: Liu
- first_name: Matthew
full_name: Westoby, Matthew
last_name: Westoby
- first_name: Yong
full_name: Nie, Yong
last_name: Nie
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Bo
full_name: Zhang, Bo
last_name: Zhang
- first_name: Jialun
full_name: Cai, Jialun
last_name: Cai
- first_name: Guoxiang
full_name: Liu, Guoxiang
last_name: Liu
- first_name: Haijun
full_name: Liao, Haijun
last_name: Liao
- first_name: Xuyang
full_name: Lu, Xuyang
last_name: Lu
citation:
ama: Zhong Y, Liu Q, Westoby M, et al. Intensified paraglacial slope failures due
to accelerating downwasting of a temperate glacier in Mt. Gongga, southeastern
Tibetan Plateau. Earth Surface Dynamics. 2022;10(1):23-42. doi:10.5194/esurf-10-23-2022
apa: Zhong, Y., Liu, Q., Westoby, M., Nie, Y., Pellicciotti, F., Zhang, B., … Lu,
X. (2022). Intensified paraglacial slope failures due to accelerating downwasting
of a temperate glacier in Mt. Gongga, southeastern Tibetan Plateau. Earth Surface
Dynamics. Copernicus Publications. https://doi.org/10.5194/esurf-10-23-2022
chicago: Zhong, Yan, Qiao Liu, Matthew Westoby, Yong Nie, Francesca Pellicciotti,
Bo Zhang, Jialun Cai, Guoxiang Liu, Haijun Liao, and Xuyang Lu. “Intensified Paraglacial
Slope Failures Due to Accelerating Downwasting of a Temperate Glacier in Mt. Gongga,
Southeastern Tibetan Plateau.” Earth Surface Dynamics. Copernicus Publications,
2022. https://doi.org/10.5194/esurf-10-23-2022.
ieee: Y. Zhong et al., “Intensified paraglacial slope failures due to accelerating
downwasting of a temperate glacier in Mt. Gongga, southeastern Tibetan Plateau,”
Earth Surface Dynamics, vol. 10, no. 1. Copernicus Publications, pp. 23–42,
2022.
ista: Zhong Y, Liu Q, Westoby M, Nie Y, Pellicciotti F, Zhang B, Cai J, Liu G, Liao
H, Lu X. 2022. Intensified paraglacial slope failures due to accelerating downwasting
of a temperate glacier in Mt. Gongga, southeastern Tibetan Plateau. Earth Surface
Dynamics. 10(1), 23–42.
mla: Zhong, Yan, et al. “Intensified Paraglacial Slope Failures Due to Accelerating
Downwasting of a Temperate Glacier in Mt. Gongga, Southeastern Tibetan Plateau.”
Earth Surface Dynamics, vol. 10, no. 1, Copernicus Publications, 2022,
pp. 23–42, doi:10.5194/esurf-10-23-2022.
short: Y. Zhong, Q. Liu, M. Westoby, Y. Nie, F. Pellicciotti, B. Zhang, J. Cai,
G. Liu, H. Liao, X. Lu, Earth Surface Dynamics 10 (2022) 23–42.
date_created: 2023-02-20T08:10:30Z
date_published: 2022-01-11T00:00:00Z
date_updated: 2023-02-28T13:38:27Z
day: '11'
doi: 10.5194/esurf-10-23-2022
extern: '1'
intvolume: ' 10'
issue: '1'
keyword:
- Earth-Surface Processes
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.5194/esurf-10-23-2022
month: '01'
oa: 1
oa_version: Published Version
page: 23-42
publication: Earth Surface Dynamics
publication_identifier:
issn:
- 2196-632X
publication_status: published
publisher: Copernicus Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Intensified paraglacial slope failures due to accelerating downwasting of a
temperate glacier in Mt. Gongga, southeastern Tibetan Plateau
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2022'
...
---
_id: '12583'
abstract:
- lang: eng
text: Peruvian glaciers are important contributors to dry season runoff for agriculture
and hydropower, but they are at risk of disappearing due to climate change. We
applied a physically based, energy balance melt model at five on-glacier sites
within the Peruvian Cordilleras Blanca and Vilcanota. Net shortwave radiation
dominates the energy balance, and despite this flux being higher in the dry season,
melt rates are lower due to losses from net longwave radiation and the latent
heat flux. The sensible heat flux is a relatively small contributor to melt energy.
At three of the sites the wet season snowpack was discontinuous, forming and melting
within a daily to weekly timescale, and resulting in highly variable melt rates
closely related to precipitation dynamics. Cold air temperatures due to a strong
La Niña year at Shallap Glacier (Cordillera Blanca) resulted in a continuous wet
season snowpack, significantly reducing wet season ablation. Sublimation was most
important at the highest site in the accumulation zone of the Quelccaya Ice Cap
(Cordillera Vilcanota), accounting for 81% of ablation, compared to 2%–4% for
the other sites. Air temperature and precipitation inputs were perturbed to investigate
the climate sensitivity of the five glaciers. At the lower sites warmer air temperatures
resulted in a switch from snowfall to rain, so that ablation was increased via
the decrease in albedo and increase in net shortwave radiation. At the top of
Quelccaya Ice Cap warming caused melting to replace sublimation so that ablation
increased nonlinearly with air temperature.
article_number: e2021JD034911
article_processing_charge: No
article_type: original
author:
- first_name: Catriona L.
full_name: Fyffe, Catriona L.
last_name: Fyffe
- first_name: Emily
full_name: Potter, Emily
last_name: Potter
- first_name: Stefan
full_name: Fugger, Stefan
last_name: Fugger
- first_name: Andrew
full_name: Orr, Andrew
last_name: Orr
- first_name: Simone
full_name: Fatichi, Simone
last_name: Fatichi
- first_name: Edwin
full_name: Loarte, Edwin
last_name: Loarte
- first_name: Katy
full_name: Medina, Katy
last_name: Medina
- first_name: Robert Å.
full_name: Hellström, Robert Å.
last_name: Hellström
- first_name: Maud
full_name: Bernat, Maud
last_name: Bernat
- first_name: Caroline
full_name: Aubry‐Wake, Caroline
last_name: Aubry‐Wake
- first_name: Wolfgang
full_name: Gurgiser, Wolfgang
last_name: Gurgiser
- first_name: L. Baker
full_name: Perry, L. Baker
last_name: Perry
- first_name: Wilson
full_name: Suarez, Wilson
last_name: Suarez
- first_name: Duncan J.
full_name: Quincey, Duncan J.
last_name: Quincey
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Fyffe CL, Potter E, Fugger S, et al. The energy and mass balance of Peruvian
Glaciers. Journal of Geophysical Research: Atmospheres. 2021;126(23). doi:10.1029/2021jd034911'
apa: 'Fyffe, C. L., Potter, E., Fugger, S., Orr, A., Fatichi, S., Loarte, E., …
Pellicciotti, F. (2021). The energy and mass balance of Peruvian Glaciers. Journal
of Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2021jd034911'
chicago: 'Fyffe, Catriona L., Emily Potter, Stefan Fugger, Andrew Orr, Simone Fatichi,
Edwin Loarte, Katy Medina, et al. “The Energy and Mass Balance of Peruvian Glaciers.”
Journal of Geophysical Research: Atmospheres. American Geophysical Union,
2021. https://doi.org/10.1029/2021jd034911.'
ieee: 'C. L. Fyffe et al., “The energy and mass balance of Peruvian Glaciers,”
Journal of Geophysical Research: Atmospheres, vol. 126, no. 23. American
Geophysical Union, 2021.'
ista: 'Fyffe CL, Potter E, Fugger S, Orr A, Fatichi S, Loarte E, Medina K, Hellström
RÅ, Bernat M, Aubry‐Wake C, Gurgiser W, Perry LB, Suarez W, Quincey DJ, Pellicciotti
F. 2021. The energy and mass balance of Peruvian Glaciers. Journal of Geophysical
Research: Atmospheres. 126(23), e2021JD034911.'
mla: 'Fyffe, Catriona L., et al. “The Energy and Mass Balance of Peruvian Glaciers.”
Journal of Geophysical Research: Atmospheres, vol. 126, no. 23, e2021JD034911,
American Geophysical Union, 2021, doi:10.1029/2021jd034911.'
short: 'C.L. Fyffe, E. Potter, S. Fugger, A. Orr, S. Fatichi, E. Loarte, K. Medina,
R.Å. Hellström, M. Bernat, C. Aubry‐Wake, W. Gurgiser, L.B. Perry, W. Suarez,
D.J. Quincey, F. Pellicciotti, Journal of Geophysical Research: Atmospheres 126
(2021).'
date_created: 2023-02-20T08:10:43Z
date_published: 2021-12-16T00:00:00Z
date_updated: 2023-02-28T13:31:08Z
day: '16'
doi: 10.1029/2021jd034911
extern: '1'
intvolume: ' 126'
issue: '23'
keyword:
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2021JD034911
month: '12'
oa: 1
oa_version: Published Version
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
eissn:
- 2169-8996
issn:
- 2169-897X
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: The energy and mass balance of Peruvian Glaciers
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 126
year: '2021'
...
---
_id: '12586'
abstract:
- lang: eng
text: Ice cliffs are common on debris-covered glaciers and have relatively high
melt rates due to their direct exposure to incoming radiation. Previous studies
have shown that their number and relative area can change considerably from year
to year, but this variability has not been explored, in part because available
cliff observations are irregular. Here, we systematically mapped and tracked ice
cliffs across four debris-covered glaciers in High Mountain Asia for every late
ablation season from 2009 to 2019 using high-resolution multi-spectral satellite
imagery. We then quantified the processes occurring at the feature scale to train
a stochastic birth-death model to represent the cliff population dynamics. Our
results show that while the cliff relative area can change by up to 20% from year
to year, the natural long-term variability is constrained, thus defining a glacier-specific
cliff carrying capacity. In a subsequent step, the inclusion of external drivers
related to climate, glacier dynamics, and hydrology highlights the influence of
these variables on the cliff population dynamics, which is usually not a direct
one due to the complexity and interdependence of the processes taking place at
the glacier surface. In some extreme cases (here, a glacier surge), these external
drivers may lead to a reorganization of the cliffs at the glacier surface and
a change in the natural variability. These results have implications for the melt
of debris-covered glaciers, in addition to showing the high rate of changes at
their surface and highlighting some of the links between cliff population and
glacier state.
article_number: e2021JF006179
article_processing_charge: No
article_type: original
author:
- first_name: M.
full_name: Kneib, M.
last_name: Kneib
- first_name: E. S.
full_name: Miles, E. S.
last_name: Miles
- first_name: P.
full_name: Buri, P.
last_name: Buri
- first_name: P.
full_name: Molnar, P.
last_name: Molnar
- first_name: M.
full_name: McCarthy, M.
last_name: McCarthy
- first_name: S.
full_name: Fugger, S.
last_name: Fugger
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Kneib M, Miles ES, Buri P, et al. Interannual dynamics of ice cliff populations
on debris‐covered glaciers from remote sensing observations and stochastic modeling.
Journal of Geophysical Research: Earth Surface. 2021;126(10). doi:10.1029/2021jf006179'
apa: 'Kneib, M., Miles, E. S., Buri, P., Molnar, P., McCarthy, M., Fugger, S., &
Pellicciotti, F. (2021). Interannual dynamics of ice cliff populations on debris‐covered
glaciers from remote sensing observations and stochastic modeling. Journal
of Geophysical Research: Earth Surface. American Geophysical Union. https://doi.org/10.1029/2021jf006179'
chicago: 'Kneib, M., E. S. Miles, P. Buri, P. Molnar, M. McCarthy, S. Fugger, and
Francesca Pellicciotti. “Interannual Dynamics of Ice Cliff Populations on Debris‐covered
Glaciers from Remote Sensing Observations and Stochastic Modeling.” Journal
of Geophysical Research: Earth Surface. American Geophysical Union, 2021.
https://doi.org/10.1029/2021jf006179.'
ieee: 'M. Kneib et al., “Interannual dynamics of ice cliff populations on
debris‐covered glaciers from remote sensing observations and stochastic modeling,”
Journal of Geophysical Research: Earth Surface, vol. 126, no. 10. American
Geophysical Union, 2021.'
ista: 'Kneib M, Miles ES, Buri P, Molnar P, McCarthy M, Fugger S, Pellicciotti F.
2021. Interannual dynamics of ice cliff populations on debris‐covered glaciers
from remote sensing observations and stochastic modeling. Journal of Geophysical
Research: Earth Surface. 126(10), e2021JF006179.'
mla: 'Kneib, M., et al. “Interannual Dynamics of Ice Cliff Populations on Debris‐covered
Glaciers from Remote Sensing Observations and Stochastic Modeling.” Journal
of Geophysical Research: Earth Surface, vol. 126, no. 10, e2021JF006179, American
Geophysical Union, 2021, doi:10.1029/2021jf006179.'
short: 'M. Kneib, E.S. Miles, P. Buri, P. Molnar, M. McCarthy, S. Fugger, F. Pellicciotti,
Journal of Geophysical Research: Earth Surface 126 (2021).'
date_created: 2023-02-20T08:11:36Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2023-02-28T13:18:26Z
day: '01'
doi: 10.1029/2021jf006179
extern: '1'
intvolume: ' 126'
issue: '10'
keyword:
- Earth-Surface Processes
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2021JF006179
month: '10'
oa: 1
oa_version: Published Version
publication: 'Journal of Geophysical Research: Earth Surface'
publication_identifier:
issn:
- 2169-9003
- 2169-9011
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: Interannual dynamics of ice cliff populations on debris‐covered glaciers from
remote sensing observations and stochastic modeling
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 126
year: '2021'
...
---
_id: '12588'
abstract:
- lang: eng
text: The thinning patterns of debris-covered glaciers in High Mountain Asia are
not well understood. Here we calculate the effect of supraglacial ice cliffs on
the mass balance of all glaciers in a Himalayan catchment, using a process-based
ice cliff melt model. We show that ice cliffs are responsible for higher than
expected thinning rates of debris-covered glacier tongues, leading to an underestimation
of their ice mass loss of 17% ± 4% in the catchment if not considered. We also
show that cliffs do enhance melt where other processes would suppress it, that
is, at high elevations, or where debris is thick, and that they contribute relatively
more to glacier mass loss if oriented north. Our approach provides a key contribution
to our understanding of the mass losses of debris-covered glaciers, and a new
quantification of their catchment wide melt and mass balance.
article_number: e2020GL092150
article_processing_charge: No
article_type: letter_note
author:
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Jakob F.
full_name: Steiner, Jakob F.
last_name: Steiner
- first_name: Silvan
full_name: Ragettli, Silvan
last_name: Ragettli
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: Buri P, Miles ES, Steiner JF, Ragettli S, Pellicciotti F. Supraglacial ice
cliffs can substantially increase the mass loss of debris‐covered glaciers. Geophysical
Research Letters. 2021;48(6). doi:10.1029/2020gl092150
apa: Buri, P., Miles, E. S., Steiner, J. F., Ragettli, S., & Pellicciotti, F.
(2021). Supraglacial ice cliffs can substantially increase the mass loss of debris‐covered
glaciers. Geophysical Research Letters. American Geophysical Union. https://doi.org/10.1029/2020gl092150
chicago: Buri, Pascal, Evan S. Miles, Jakob F. Steiner, Silvan Ragettli, and Francesca
Pellicciotti. “Supraglacial Ice Cliffs Can Substantially Increase the Mass Loss
of Debris‐covered Glaciers.” Geophysical Research Letters. American Geophysical
Union, 2021. https://doi.org/10.1029/2020gl092150.
ieee: P. Buri, E. S. Miles, J. F. Steiner, S. Ragettli, and F. Pellicciotti, “Supraglacial
ice cliffs can substantially increase the mass loss of debris‐covered glaciers,”
Geophysical Research Letters, vol. 48, no. 6. American Geophysical Union,
2021.
ista: Buri P, Miles ES, Steiner JF, Ragettli S, Pellicciotti F. 2021. Supraglacial
ice cliffs can substantially increase the mass loss of debris‐covered glaciers.
Geophysical Research Letters. 48(6), e2020GL092150.
mla: Buri, Pascal, et al. “Supraglacial Ice Cliffs Can Substantially Increase the
Mass Loss of Debris‐covered Glaciers.” Geophysical Research Letters, vol.
48, no. 6, e2020GL092150, American Geophysical Union, 2021, doi:10.1029/2020gl092150.
short: P. Buri, E.S. Miles, J.F. Steiner, S. Ragettli, F. Pellicciotti, Geophysical
Research Letters 48 (2021).
date_created: 2023-02-20T08:11:49Z
date_published: 2021-03-28T00:00:00Z
date_updated: 2023-02-28T13:01:31Z
day: '28'
doi: 10.1029/2020gl092150
extern: '1'
intvolume: ' 48'
issue: '6'
keyword:
- General Earth and Planetary Sciences
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2020GL092150
month: '03'
oa: 1
oa_version: Published Version
publication: Geophysical Research Letters
publication_identifier:
eissn:
- 1944-8007
issn:
- 0094-8276
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: Supraglacial ice cliffs can substantially increase the mass loss of debris‐covered
glaciers
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 48
year: '2021'
...
---
_id: '12604'
abstract:
- lang: eng
text: Glaciers in the high mountains of Asia provide an important water resource
for millions of people. Many of these glaciers are partially covered by rocky
debris, which protects the ice from solar radiation and warm air. However, studies
have found that the surface of these debris-covered glaciers is actually lowering
as fast as glaciers without debris. Water ponded on the surface of the glaciers
may be partially responsible, as water can absorb atmospheric energy very efficiently.
However, the overall effect of these ponds has not been thoroughly assessed yet.
We study a valley in Nepal for which we have extensive weather measurements, and
we use a numerical model to calculate the energy absorbed by ponds on the surface
of the glaciers over 6 months. As we have not observed each individual pond thoroughly,
we run the model 5,000 times with different setups. We find that ponds are extremely
important for glacier melt and absorb energy 14 times as quickly as the debris-covered
ice. Although the ponds account for 1% of the glacier area covered by rocks, and
only 0.3% of the total glacier area, they absorb enough energy to account for
one eighth of the whole valley's ice loss.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Ian
full_name: Willis, Ian
last_name: Willis
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Jakob F.
full_name: Steiner, Jakob F.
last_name: Steiner
- first_name: Neil S.
full_name: Arnold, Neil S.
last_name: Arnold
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: Miles ES, Willis I, Buri P, Steiner JF, Arnold NS, Pellicciotti F. Surface
pond energy absorption across four Himalayan Glaciers accounts for 1/8 of total
catchment ice loss. Geophysical Research Letters. 2018;45(19):10464-10473.
doi:10.1029/2018gl079678
apa: Miles, E. S., Willis, I., Buri, P., Steiner, J. F., Arnold, N. S., & Pellicciotti,
F. (2018). Surface pond energy absorption across four Himalayan Glaciers accounts
for 1/8 of total catchment ice loss. Geophysical Research Letters. American
Geophysical Union. https://doi.org/10.1029/2018gl079678
chicago: Miles, Evan S., Ian Willis, Pascal Buri, Jakob F. Steiner, Neil S. Arnold,
and Francesca Pellicciotti. “Surface Pond Energy Absorption across Four Himalayan
Glaciers Accounts for 1/8 of Total Catchment Ice Loss.” Geophysical Research
Letters. American Geophysical Union, 2018. https://doi.org/10.1029/2018gl079678.
ieee: E. S. Miles, I. Willis, P. Buri, J. F. Steiner, N. S. Arnold, and F. Pellicciotti,
“Surface pond energy absorption across four Himalayan Glaciers accounts for 1/8
of total catchment ice loss,” Geophysical Research Letters, vol. 45, no.
19. American Geophysical Union, pp. 10464–10473, 2018.
ista: Miles ES, Willis I, Buri P, Steiner JF, Arnold NS, Pellicciotti F. 2018. Surface
pond energy absorption across four Himalayan Glaciers accounts for 1/8 of total
catchment ice loss. Geophysical Research Letters. 45(19), 10464–10473.
mla: Miles, Evan S., et al. “Surface Pond Energy Absorption across Four Himalayan
Glaciers Accounts for 1/8 of Total Catchment Ice Loss.” Geophysical Research
Letters, vol. 45, no. 19, American Geophysical Union, 2018, pp. 10464–73,
doi:10.1029/2018gl079678.
short: E.S. Miles, I. Willis, P. Buri, J.F. Steiner, N.S. Arnold, F. Pellicciotti,
Geophysical Research Letters 45 (2018) 10464–10473.
date_created: 2023-02-20T08:13:18Z
date_published: 2018-10-18T00:00:00Z
date_updated: 2023-02-28T11:46:48Z
day: '18'
doi: 10.1029/2018gl079678
extern: '1'
intvolume: ' 45'
issue: '19'
keyword:
- General Earth and Planetary Sciences
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2018GL079678
month: '10'
oa: 1
oa_version: Published Version
page: 10464-10473
publication: Geophysical Research Letters
publication_identifier:
eissn:
- 1944-8007
issn:
- 0094-8276
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: Surface pond energy absorption across four Himalayan Glaciers accounts for
1/8 of total catchment ice loss
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 45
year: '2018'
...
---
_id: '9137'
abstract:
- lang: eng
text: Pools of air cooled by partial rain evaporation span up to several hundreds
of kilometers in nature and typically last less than 1 day, ultimately losing
their identity to the large-scale flow. These fundamentally differ in character
from the radiatively-driven dry pools defining convective aggregation. Advancement
in remote sensing and in computer capabilities has promoted exploration of how
precipitation-induced cold pool processes modify the convective spectrum and life
cycle. This contribution surveys current understanding of such cold pools over
the tropical and subtropical oceans. In shallow convection with low rain rates,
the cold pools moisten, preserving the near-surface equivalent potential temperature
or increasing it if the surface moisture fluxes cannot ventilate beyond the new
surface layer; both conditions indicate downdraft origin air from within the boundary
layer. When rain rates exceed ∼ 2 mm h−1, convective-scale downdrafts can bring
down drier air of lower equivalent potential temperature from above the boundary
layer. The resulting density currents facilitate the lifting of locally thermodynamically
favorable air and can impose an arc-shaped mesoscale cloud organization. This
organization allows clouds capable of reaching 4–5 km within otherwise dry environments.
These are more commonly observed in the northern hemisphere trade wind regime,
where the flow to the intertropical convergence zone is unimpeded by the equator.
Their near-surface air properties share much with those shown from cold pools
sampled in the equatorial Indian Ocean. Cold pools are most effective at influencing
the mesoscale organization when the atmosphere is moist in the lower free troposphere
and dry above, suggesting an optimal range of water vapor paths. Outstanding questions
on the relationship between cold pools, their accompanying moisture distribution
and cloud cover are detailed further. Near-surface water vapor rings are documented
in one model inside but near the cold pool edge; these are not consistent with
observations, but do improve with smaller horizontal grid spacings.
article_processing_charge: No
article_type: original
author:
- first_name: Paquita
full_name: Zuidema, Paquita
last_name: Zuidema
- first_name: Giuseppe
full_name: Torri, Giuseppe
last_name: Torri
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
- first_name: Arunchandra
full_name: Chandra, Arunchandra
last_name: Chandra
citation:
ama: Zuidema P, Torri G, Muller CJ, Chandra A. A survey of precipitation-induced
atmospheric cold pools over oceans and their interactions with the larger-scale
environment. Surveys in Geophysics. 2017;38(6):1283-1305. doi:10.1007/s10712-017-9447-x
apa: Zuidema, P., Torri, G., Muller, C. J., & Chandra, A. (2017). A survey of
precipitation-induced atmospheric cold pools over oceans and their interactions
with the larger-scale environment. Surveys in Geophysics. Springer Nature.
https://doi.org/10.1007/s10712-017-9447-x
chicago: Zuidema, Paquita, Giuseppe Torri, Caroline J Muller, and Arunchandra Chandra.
“A Survey of Precipitation-Induced Atmospheric Cold Pools over Oceans and Their
Interactions with the Larger-Scale Environment.” Surveys in Geophysics.
Springer Nature, 2017. https://doi.org/10.1007/s10712-017-9447-x.
ieee: P. Zuidema, G. Torri, C. J. Muller, and A. Chandra, “A survey of precipitation-induced
atmospheric cold pools over oceans and their interactions with the larger-scale
environment,” Surveys in Geophysics, vol. 38, no. 6. Springer Nature, pp.
1283–1305, 2017.
ista: Zuidema P, Torri G, Muller CJ, Chandra A. 2017. A survey of precipitation-induced
atmospheric cold pools over oceans and their interactions with the larger-scale
environment. Surveys in Geophysics. 38(6), 1283–1305.
mla: Zuidema, Paquita, et al. “A Survey of Precipitation-Induced Atmospheric Cold
Pools over Oceans and Their Interactions with the Larger-Scale Environment.” Surveys
in Geophysics, vol. 38, no. 6, Springer Nature, 2017, pp. 1283–305, doi:10.1007/s10712-017-9447-x.
short: P. Zuidema, G. Torri, C.J. Muller, A. Chandra, Surveys in Geophysics 38 (2017)
1283–1305.
date_created: 2021-02-15T14:20:07Z
date_published: 2017-11-14T00:00:00Z
date_updated: 2022-01-24T12:41:45Z
day: '14'
doi: 10.1007/s10712-017-9447-x
extern: '1'
intvolume: ' 38'
issue: '6'
keyword:
- Geochemistry and Petrology
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10712-017-9447-x
month: '11'
oa: 1
oa_version: Published Version
page: 1283-1305
publication: Surveys in Geophysics
publication_identifier:
issn:
- 0169-3298
- 1573-0956
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: A survey of precipitation-induced atmospheric cold pools over oceans and their
interactions with the larger-scale environment
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 38
year: '2017'
...
---
_id: '9138'
abstract:
- lang: eng
text: Convective self-aggregation, the spontaneous organization of initially scattered
convection into isolated convective clusters despite spatially homogeneous boundary
conditions and forcing, was first recognized and studied in idealized numerical
simulations. While there is a rich history of observational work on convective
clustering and organization, there have been only a few studies that have analyzed
observations to look specifically for processes related to self-aggregation in
models. Here we review observational work in both of these categories and motivate
the need for more of this work. We acknowledge that self-aggregation may appear
to be far-removed from observed convective organization in terms of time scales,
initial conditions, initiation processes, and mean state extremes, but we argue
that these differences vary greatly across the diverse range of model simulations
in the literature and that these comparisons are already offering important insights
into real tropical phenomena. Some preliminary new findings are presented, including
results showing that a self-aggregation simulation with square geometry has too
broad distribution of humidity and is too dry in the driest regions when compared
with radiosonde records from Nauru, while an elongated channel simulation has
realistic representations of atmospheric humidity and its variability. We discuss
recent work increasing our understanding of how organized convection and climate
change may interact, and how model discrepancies related to this question are
prompting interest in observational comparisons. We also propose possible future
directions for observational work related to convective aggregation, including
novel satellite approaches and a ground-based observational network.
article_processing_charge: No
article_type: original
author:
- first_name: Christopher E.
full_name: Holloway, Christopher E.
last_name: Holloway
- first_name: Allison A.
full_name: Wing, Allison A.
last_name: Wing
- first_name: Sandrine
full_name: Bony, Sandrine
last_name: Bony
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
- first_name: Hirohiko
full_name: Masunaga, Hirohiko
last_name: Masunaga
- first_name: Tristan S.
full_name: L’Ecuyer, Tristan S.
last_name: L’Ecuyer
- first_name: David D.
full_name: Turner, David D.
last_name: Turner
- first_name: Paquita
full_name: Zuidema, Paquita
last_name: Zuidema
citation:
ama: Holloway CE, Wing AA, Bony S, et al. Observing convective aggregation. Surveys
in Geophysics. 2017;38(6):1199-1236. doi:10.1007/s10712-017-9419-1
apa: Holloway, C. E., Wing, A. A., Bony, S., Muller, C. J., Masunaga, H., L’Ecuyer,
T. S., … Zuidema, P. (2017). Observing convective aggregation. Surveys in Geophysics.
Springer Nature. https://doi.org/10.1007/s10712-017-9419-1
chicago: Holloway, Christopher E., Allison A. Wing, Sandrine Bony, Caroline J Muller,
Hirohiko Masunaga, Tristan S. L’Ecuyer, David D. Turner, and Paquita Zuidema.
“Observing Convective Aggregation.” Surveys in Geophysics. Springer Nature,
2017. https://doi.org/10.1007/s10712-017-9419-1.
ieee: C. E. Holloway et al., “Observing convective aggregation,” Surveys
in Geophysics, vol. 38, no. 6. Springer Nature, pp. 1199–1236, 2017.
ista: Holloway CE, Wing AA, Bony S, Muller CJ, Masunaga H, L’Ecuyer TS, Turner DD,
Zuidema P. 2017. Observing convective aggregation. Surveys in Geophysics. 38(6),
1199–1236.
mla: Holloway, Christopher E., et al. “Observing Convective Aggregation.” Surveys
in Geophysics, vol. 38, no. 6, Springer Nature, 2017, pp. 1199–236, doi:10.1007/s10712-017-9419-1.
short: C.E. Holloway, A.A. Wing, S. Bony, C.J. Muller, H. Masunaga, T.S. L’Ecuyer,
D.D. Turner, P. Zuidema, Surveys in Geophysics 38 (2017) 1199–1236.
date_created: 2021-02-15T14:20:38Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2022-01-24T12:43:13Z
day: '01'
doi: 10.1007/s10712-017-9419-1
extern: '1'
intvolume: ' 38'
issue: '6'
keyword:
- Geochemistry and Petrology
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10712-017-9419-1
month: '11'
oa: 1
oa_version: Published Version
page: 1199-1236
publication: Surveys in Geophysics
publication_identifier:
issn:
- 0169-3298
- 1573-0956
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Observing convective aggregation
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 38
year: '2017'
...
---
_id: '9139'
abstract:
- lang: eng
text: Organized convection in the tropics occurs across a range of spatial and temporal
scales and strongly influences cloud cover and humidity. One mode of organization
found is “self-aggregation,” in which moist convection spontaneously organizes
into one or several isolated clusters despite spatially homogeneous boundary conditions
and forcing. Self-aggregation is driven by interactions between clouds, moisture,
radiation, surface fluxes, and circulation, and occurs in a wide variety of idealized
simulations of radiative–convective equilibrium. Here we provide a review of convective
self-aggregation in numerical simulations, including its character, causes, and
effects. We describe the evolution of self-aggregation including its time and
length scales and the physical mechanisms leading to its triggering and maintenance,
and we also discuss possible links to climate and climate change.
article_processing_charge: No
article_type: original
author:
- first_name: Allison A.
full_name: Wing, Allison A.
last_name: Wing
- first_name: Kerry
full_name: Emanuel, Kerry
last_name: Emanuel
- first_name: Christopher E.
full_name: Holloway, Christopher E.
last_name: Holloway
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
citation:
ama: 'Wing AA, Emanuel K, Holloway CE, Muller CJ. Convective self-aggregation in
numerical simulations: A review. Surveys in Geophysics. 2017;38(6):1173-1197.
doi:10.1007/s10712-017-9408-4'
apa: 'Wing, A. A., Emanuel, K., Holloway, C. E., & Muller, C. J. (2017). Convective
self-aggregation in numerical simulations: A review. Surveys in Geophysics.
Springer Nature. https://doi.org/10.1007/s10712-017-9408-4'
chicago: 'Wing, Allison A., Kerry Emanuel, Christopher E. Holloway, and Caroline
J Muller. “Convective Self-Aggregation in Numerical Simulations: A Review.” Surveys
in Geophysics. Springer Nature, 2017. https://doi.org/10.1007/s10712-017-9408-4.'
ieee: 'A. A. Wing, K. Emanuel, C. E. Holloway, and C. J. Muller, “Convective self-aggregation
in numerical simulations: A review,” Surveys in Geophysics, vol. 38, no.
6. Springer Nature, pp. 1173–1197, 2017.'
ista: 'Wing AA, Emanuel K, Holloway CE, Muller CJ. 2017. Convective self-aggregation
in numerical simulations: A review. Surveys in Geophysics. 38(6), 1173–1197.'
mla: 'Wing, Allison A., et al. “Convective Self-Aggregation in Numerical Simulations:
A Review.” Surveys in Geophysics, vol. 38, no. 6, Springer Nature, 2017,
pp. 1173–97, doi:10.1007/s10712-017-9408-4.'
short: A.A. Wing, K. Emanuel, C.E. Holloway, C.J. Muller, Surveys in Geophysics
38 (2017) 1173–1197.
date_created: 2021-02-15T14:20:56Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2022-01-24T12:42:36Z
day: '01'
doi: 10.1007/s10712-017-9408-4
extern: '1'
intvolume: ' 38'
issue: '6'
keyword:
- Geochemistry and Petrology
- Geophysics
language:
- iso: eng
month: '11'
oa_version: None
page: 1173-1197
publication: Surveys in Geophysics
publication_identifier:
issn:
- 0169-3298
- 1573-0956
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: 'Convective self-aggregation in numerical simulations: A review'
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 38
year: '2017'
...
---
_id: '12613'
abstract:
- lang: eng
text: 'We use high-resolution digital elevation models (DEMs) from unmanned aerial
vehicle (UAV) surveys to document the evolution of four ice cliffs on the debris-covered
tongue of Lirung Glacier, Nepal, over one ablation season. Observations show that
out of four cliffs, three different patterns of evolution emerge: (i) reclining
cliffs that flatten during the ablation season; (ii) stable cliffs that maintain
a self-similar geometry; and (iii) growing cliffs, expanding laterally. We use
the insights from this unique data set to develop a 3-D model of cliff backwasting
and evolution that is validated against observations and an independent data set
of volume losses. The model includes ablation at the cliff surface driven by energy
exchange with the atmosphere, reburial of cliff cells by surrounding debris, and
the effect of adjacent ponds. The cliff geometry is updated monthly to account
for the modifications induced by each of those processes. Model results indicate
that a major factor affecting the survival of steep cliffs is the coupling with
ponded water at its base, which prevents progressive flattening and possible disappearance
of a cliff. The radial growth observed at one cliff is explained by higher receipts
of longwave and shortwave radiation, calculated taking into account atmospheric
fluxes, shading, and the emission of longwave radiation from debris surfaces.
The model is a clear step forward compared to existing static approaches that
calculate atmospheric melt over an invariant cliff geometry and can be used for
long-term simulations of cliff evolution and to test existing hypotheses about
cliffs'' survival.'
article_processing_charge: No
article_type: original
author:
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Jakob F.
full_name: Steiner, Jakob F.
last_name: Steiner
- first_name: Walter W.
full_name: Immerzeel, Walter W.
last_name: Immerzeel
- first_name: Patrick
full_name: Wagnon, Patrick
last_name: Wagnon
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Buri P, Miles ES, Steiner JF, Immerzeel WW, Wagnon P, Pellicciotti F. A physically
based 3‐D model of ice cliff evolution over debris‐covered glaciers. Journal
of Geophysical Research: Earth Surface. 2016;121(12):2471-2493. doi:10.1002/2016jf004039'
apa: 'Buri, P., Miles, E. S., Steiner, J. F., Immerzeel, W. W., Wagnon, P., &
Pellicciotti, F. (2016). A physically based 3‐D model of ice cliff evolution over
debris‐covered glaciers. Journal of Geophysical Research: Earth Surface.
American Geophysical Union. https://doi.org/10.1002/2016jf004039'
chicago: 'Buri, Pascal, Evan S. Miles, Jakob F. Steiner, Walter W. Immerzeel, Patrick
Wagnon, and Francesca Pellicciotti. “A Physically Based 3‐D Model of Ice Cliff
Evolution over Debris‐covered Glaciers.” Journal of Geophysical Research: Earth
Surface. American Geophysical Union, 2016. https://doi.org/10.1002/2016jf004039.'
ieee: 'P. Buri, E. S. Miles, J. F. Steiner, W. W. Immerzeel, P. Wagnon, and F. Pellicciotti,
“A physically based 3‐D model of ice cliff evolution over debris‐covered glaciers,”
Journal of Geophysical Research: Earth Surface, vol. 121, no. 12. American
Geophysical Union, pp. 2471–2493, 2016.'
ista: 'Buri P, Miles ES, Steiner JF, Immerzeel WW, Wagnon P, Pellicciotti F. 2016.
A physically based 3‐D model of ice cliff evolution over debris‐covered glaciers.
Journal of Geophysical Research: Earth Surface. 121(12), 2471–2493.'
mla: 'Buri, Pascal, et al. “A Physically Based 3‐D Model of Ice Cliff Evolution
over Debris‐covered Glaciers.” Journal of Geophysical Research: Earth Surface,
vol. 121, no. 12, American Geophysical Union, 2016, pp. 2471–93, doi:10.1002/2016jf004039.'
short: 'P. Buri, E.S. Miles, J.F. Steiner, W.W. Immerzeel, P. Wagnon, F. Pellicciotti,
Journal of Geophysical Research: Earth Surface 121 (2016) 2471–2493.'
date_created: 2023-02-20T08:14:28Z
date_published: 2016-11-22T00:00:00Z
date_updated: 2023-02-24T11:34:54Z
day: '22'
doi: 10.1002/2016jf004039
extern: '1'
intvolume: ' 121'
issue: '12'
keyword:
- Earth-Surface Processes
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1002/2016JF004039
month: '11'
oa: 1
oa_version: Published Version
page: 2471-2493
publication: 'Journal of Geophysical Research: Earth Surface'
publication_identifier:
eissn:
- 2169-9011
issn:
- 2169-9003
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: A physically based 3‐D model of ice cliff evolution over debris‐covered glaciers
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 121
year: '2016'
...
---
_id: '12631'
abstract:
- lang: eng
text: Air temperature is one of the most relevant input variables for snow and ice
melt calculations. However, local meteorological conditions, complex topography,
and logistical concerns in glacierized regions make the measuring and modeling
of air temperature a difficult task. In this study, we investigate the spatial
distribution of 2 m air temperature over mountain glaciers and propose a modification
to an existing model to improve its representation. Spatially distributed meteorological
data from Haut Glacier d'Arolla (Switzerland), Place (Canada), and Juncal Norte
(Chile) Glaciers are used to examine approximate flow line temperatures during
their respective ablation seasons. During warm conditions (off-glacier temperatures
well above 0°C), observed air temperatures in the upper reaches of Place Glacier
and Haut Glacier d'Arolla decrease down glacier along the approximate flow line.
At Juncal Norte and Haut Glacier d'Arolla, an increase in air temperature is observed
over the glacier tongue. While the temperature behavior over the upper part can
be explained by the cooling effect of the glacier surface, the temperature increase
over the glacier tongue may be caused by several processes induced by the surrounding
warm atmosphere. In order to capture the latter effect, we add an additional term
to the Greuell and Böhm (GB) thermodynamic glacier wind model. For high off-glacier
temperatures, the modified GB model reduces root-mean-square error up to 32% and
provides a new approach for distributing air temperature over mountain glaciers
as a function of off-glacier temperatures and approximate glacier flow lines.
article_processing_charge: No
article_type: original
author:
- first_name: A.
full_name: Ayala, A.
last_name: Ayala
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: J. M.
full_name: Shea, J. M.
last_name: Shea
citation:
ama: 'Ayala A, Pellicciotti F, Shea JM. Modeling 2 m air temperatures over mountain
glaciers: Exploring the influence of katabatic cooling and external warming. Journal
of Geophysical Research: Atmospheres. 2015;120(8):3139-3157. doi:10.1002/2015jd023137'
apa: 'Ayala, A., Pellicciotti, F., & Shea, J. M. (2015). Modeling 2 m air temperatures
over mountain glaciers: Exploring the influence of katabatic cooling and external
warming. Journal of Geophysical Research: Atmospheres. American Geophysical
Union. https://doi.org/10.1002/2015jd023137'
chicago: 'Ayala, A., Francesca Pellicciotti, and J. M. Shea. “Modeling 2 m Air Temperatures
over Mountain Glaciers: Exploring the Influence of Katabatic Cooling and External
Warming.” Journal of Geophysical Research: Atmospheres. American Geophysical
Union, 2015. https://doi.org/10.1002/2015jd023137.'
ieee: 'A. Ayala, F. Pellicciotti, and J. M. Shea, “Modeling 2 m air temperatures
over mountain glaciers: Exploring the influence of katabatic cooling and external
warming,” Journal of Geophysical Research: Atmospheres, vol. 120, no. 8.
American Geophysical Union, pp. 3139–3157, 2015.'
ista: 'Ayala A, Pellicciotti F, Shea JM. 2015. Modeling 2 m air temperatures over
mountain glaciers: Exploring the influence of katabatic cooling and external warming.
Journal of Geophysical Research: Atmospheres. 120(8), 3139–3157.'
mla: 'Ayala, A., et al. “Modeling 2 m Air Temperatures over Mountain Glaciers: Exploring
the Influence of Katabatic Cooling and External Warming.” Journal of Geophysical
Research: Atmospheres, vol. 120, no. 8, American Geophysical Union, 2015,
pp. 3139–57, doi:10.1002/2015jd023137.'
short: 'A. Ayala, F. Pellicciotti, J.M. Shea, Journal of Geophysical Research: Atmospheres
120 (2015) 3139–3157.'
date_created: 2023-02-20T08:16:28Z
date_published: 2015-04-18T00:00:00Z
date_updated: 2023-02-24T09:16:26Z
day: '18'
doi: 10.1002/2015jd023137
extern: '1'
intvolume: ' 120'
issue: '8'
keyword:
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Geophysics
language:
- iso: eng
month: '04'
oa_version: Published Version
page: 3139-3157
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
eissn:
- 2169-8996
issn:
- 2169-897X
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Modeling 2 m air temperatures over mountain glaciers: Exploring the influence
of katabatic cooling and external warming'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 120
year: '2015'
...
---
_id: '12643'
abstract:
- lang: eng
text: Parameterizations of incoming longwave radiation are increasingly receiving
attention for both low and high elevation glacierized sites. In this paper, we
test 13 clear-sky parameterizations combined with seven cloud corrections for
all-sky atmospheric emissivity at one location on Haut Glacier d'Arolla. We also
analyze the four seasons separately and conduct a cross-validation to test the
parameters’ robustness. The best parameterization is the one by Dilley and O'Brien,
B for clear-sky conditions combined with Unsworth and Monteith cloud correction.
This model is also the most robust when tested in cross-validation. When validated
at different sites in the southern Alps of Switzerland and north-western Italian
Alps, all parameterizations show a substantial decrease in performance, except
for one site, thus suggesting that it is important to recalibrate parameterizations
of incoming longwave radiation for different locations. We argue that this is
due to differences in the structure of the atmosphere at the sites. We also quantify
the effect that the incoming longwave radiation parameterizations have on energy-balance
melt modeling, and show that recalibration of model parameters is needed. Using
parameters from other sites leads to a significant underestimation of melt and
to an error that is larger than that associated with using different parameterizations.
Once recalibrated, however, the parameters of most models seem to be stable over
seasons and years at the location on Haut Glacier d'Arolla.
article_processing_charge: No
article_type: original
author:
- first_name: I.
full_name: Juszak, I.
last_name: Juszak
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Juszak I, Pellicciotti F. A comparison of parameterizations of incoming longwave
radiation over melting glaciers: Model robustness and seasonal variability. Journal
of Geophysical Research: Atmospheres. 2013;118(8):3066-3084. doi:10.1002/jgrd.50277'
apa: 'Juszak, I., & Pellicciotti, F. (2013). A comparison of parameterizations
of incoming longwave radiation over melting glaciers: Model robustness and seasonal
variability. Journal of Geophysical Research: Atmospheres. American Geophysical
Union. https://doi.org/10.1002/jgrd.50277'
chicago: 'Juszak, I., and Francesca Pellicciotti. “A Comparison of Parameterizations
of Incoming Longwave Radiation over Melting Glaciers: Model Robustness and Seasonal
Variability.” Journal of Geophysical Research: Atmospheres. American Geophysical
Union, 2013. https://doi.org/10.1002/jgrd.50277.'
ieee: 'I. Juszak and F. Pellicciotti, “A comparison of parameterizations of incoming
longwave radiation over melting glaciers: Model robustness and seasonal variability,”
Journal of Geophysical Research: Atmospheres, vol. 118, no. 8. American
Geophysical Union, pp. 3066–3084, 2013.'
ista: 'Juszak I, Pellicciotti F. 2013. A comparison of parameterizations of incoming
longwave radiation over melting glaciers: Model robustness and seasonal variability.
Journal of Geophysical Research: Atmospheres. 118(8), 3066–3084.'
mla: 'Juszak, I., and Francesca Pellicciotti. “A Comparison of Parameterizations
of Incoming Longwave Radiation over Melting Glaciers: Model Robustness and Seasonal
Variability.” Journal of Geophysical Research: Atmospheres, vol. 118, no.
8, American Geophysical Union, 2013, pp. 3066–84, doi:10.1002/jgrd.50277.'
short: 'I. Juszak, F. Pellicciotti, Journal of Geophysical Research: Atmospheres
118 (2013) 3066–3084.'
date_created: 2023-02-20T08:17:34Z
date_published: 2013-04-27T00:00:00Z
date_updated: 2023-02-21T10:10:46Z
day: '27'
doi: 10.1002/jgrd.50277
extern: '1'
intvolume: ' 118'
issue: '8'
keyword:
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1002/jgrd.50277
month: '04'
oa: 1
oa_version: Published Version
page: 3066-3084
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
issn:
- 2169-897X
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'A comparison of parameterizations of incoming longwave radiation over melting
glaciers: Model robustness and seasonal variability'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 118
year: '2013'
...
---
_id: '12648'
abstract:
- lang: eng
text: Distributed glacier melt models generally assume that the glacier surface
consists of bare exposed ice and snow. In reality, many glaciers are wholly or
partially covered in layers of debris that tend to suppress ablation rates. In
this paper, an existing physically based point model for the ablation of debris-covered
ice is incorporated in a distributed melt model and applied to Haut Glacier d'Arolla,
Switzerland, which has three large patches of debris cover on its surface. The
model is based on a 10 m resolution digital elevation model (DEM) of the area;
each glacier pixel in the DEM is defined as either bare or debris-covered ice,
and may be covered in snow that must be melted off before ice ablation is assumed
to occur. Each debris-covered pixel is assigned a debris thickness value using
probability distributions based on over 1000 manual thickness measurements. Locally
observed meteorological data are used to run energy balance calculations in every
pixel, using an approach suitable for snow, bare ice or debris-covered ice as
appropriate. The use of the debris model significantly reduces the total ablation
in the debris-covered areas, however the precise reduction is sensitive to the
temperature extrapolation used in the model distribution because air near the
debris surface tends to be slightly warmer than over bare ice. Overall results
suggest that the debris patches, which cover 10% of the glacierized area, reduce
total runoff from the glacierized part of the basin by up to 7%.
article_number: D18105
article_processing_charge: No
article_type: original
author:
- first_name: T. D.
full_name: Reid, T. D.
last_name: Reid
- first_name: M.
full_name: Carenzo, M.
last_name: Carenzo
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: B. W.
full_name: Brock, B. W.
last_name: Brock
citation:
ama: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. Including debris cover effects
in a distributed model of glacier ablation. Journal of Geophysical Research:
Atmospheres. 2012;117(D18). doi:10.1029/2012jd017795'
apa: 'Reid, T. D., Carenzo, M., Pellicciotti, F., & Brock, B. W. (2012). Including
debris cover effects in a distributed model of glacier ablation. Journal of
Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2012jd017795'
chicago: 'Reid, T. D., M. Carenzo, Francesca Pellicciotti, and B. W. Brock. “Including
Debris Cover Effects in a Distributed Model of Glacier Ablation.” Journal of
Geophysical Research: Atmospheres. American Geophysical Union, 2012. https://doi.org/10.1029/2012jd017795.'
ieee: 'T. D. Reid, M. Carenzo, F. Pellicciotti, and B. W. Brock, “Including debris
cover effects in a distributed model of glacier ablation,” Journal of Geophysical
Research: Atmospheres, vol. 117, no. D18. American Geophysical Union, 2012.'
ista: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. 2012. Including debris cover
effects in a distributed model of glacier ablation. Journal of Geophysical Research:
Atmospheres. 117(D18), D18105.'
mla: 'Reid, T. D., et al. “Including Debris Cover Effects in a Distributed Model
of Glacier Ablation.” Journal of Geophysical Research: Atmospheres, vol.
117, no. D18, D18105, American Geophysical Union, 2012, doi:10.1029/2012jd017795.'
short: 'T.D. Reid, M. Carenzo, F. Pellicciotti, B.W. Brock, Journal of Geophysical
Research: Atmospheres 117 (2012).'
date_created: 2023-02-20T08:17:57Z
date_published: 2012-09-27T00:00:00Z
date_updated: 2023-02-20T10:57:31Z
day: '27'
doi: 10.1029/2012jd017795
extern: '1'
intvolume: ' 117'
issue: D18
keyword:
- Paleontology
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Earth-Surface Processes
- Geochemistry and Petrology
- Soil Science
- Water Science and Technology
- Ecology
- Aquatic Science
- Forestry
- Oceanography
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2012JD017795
month: '09'
oa: 1
oa_version: Published Version
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
issn:
- 0148-0227
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: Including debris cover effects in a distributed model of glacier ablation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 117
year: '2012'
...
---
_id: '12651'
abstract:
- lang: eng
text: Temperature data from three Automatic Weather Stations and twelve Temperature
Loggers are used to investigate the spatiotemporal variability of temperature
over a glacier, its main atmospheric controls, the suitability of extrapolation
techniques and their effect on melt modeling. We use data collected on Juncal
Norte Glacier, central Chile, during one ablation season. We examine temporal
and spatial variability in lapse rates (LRs), together with alternative statistical
interpolation methods. The main control over the glacier thermal regime is the
development of a katabatic boundary layer (KBL). Katabatic wind occurs at night
and in the morning and is eroded in the afternoon. LRs reveal strong diurnal variability,
with steeper LRs during the day when the katabatic wind weakens and shallower
LRs during the night and morning. We suggest that temporally variable LRs should
be used to account for the observed change. They tend to be steeper than equivalent
constant LRs, and therefore result in a reduction in simulated melt compared to
use of constant LRs when extrapolating from lower to higher elevations. In addition
to the temporal variability, the temperature-elevation relationship varies also
in space. Differences are evident between local LRs and including such variability
in melt modeling affects melt simulations. Extrapolation methods based on the
spatial variability of the observations after removal of the elevation trend,
such as Inverse Distance Weighting or Kriging, do not seem necessary for simulations
of gridded temperature data over a glacier.
article_number: D23109
article_processing_charge: No
article_type: original
author:
- first_name: L.
full_name: Petersen, L.
last_name: Petersen
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: 'Petersen L, Pellicciotti F. Spatial and temporal variability of air temperature
on a melting glacier: Atmospheric controls, extrapolation methods and their effect
on melt modeling, Juncal Norte Glacier, Chile. Journal of Geophysical Research:
Atmospheres. 2011;116(D23). doi:10.1029/2011jd015842'
apa: 'Petersen, L., & Pellicciotti, F. (2011). Spatial and temporal variability
of air temperature on a melting glacier: Atmospheric controls, extrapolation methods
and their effect on melt modeling, Juncal Norte Glacier, Chile. Journal of
Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2011jd015842'
chicago: 'Petersen, L., and Francesca Pellicciotti. “Spatial and Temporal Variability
of Air Temperature on a Melting Glacier: Atmospheric Controls, Extrapolation Methods
and Their Effect on Melt Modeling, Juncal Norte Glacier, Chile.” Journal of
Geophysical Research: Atmospheres. American Geophysical Union, 2011. https://doi.org/10.1029/2011jd015842.'
ieee: 'L. Petersen and F. Pellicciotti, “Spatial and temporal variability of air
temperature on a melting glacier: Atmospheric controls, extrapolation methods
and their effect on melt modeling, Juncal Norte Glacier, Chile,” Journal of
Geophysical Research: Atmospheres, vol. 116, no. D23. American Geophysical
Union, 2011.'
ista: 'Petersen L, Pellicciotti F. 2011. Spatial and temporal variability of air
temperature on a melting glacier: Atmospheric controls, extrapolation methods
and their effect on melt modeling, Juncal Norte Glacier, Chile. Journal of Geophysical
Research: Atmospheres. 116(D23), D23109.'
mla: 'Petersen, L., and Francesca Pellicciotti. “Spatial and Temporal Variability
of Air Temperature on a Melting Glacier: Atmospheric Controls, Extrapolation Methods
and Their Effect on Melt Modeling, Juncal Norte Glacier, Chile.” Journal of
Geophysical Research: Atmospheres, vol. 116, no. D23, D23109, American Geophysical
Union, 2011, doi:10.1029/2011jd015842.'
short: 'L. Petersen, F. Pellicciotti, Journal of Geophysical Research: Atmospheres
116 (2011).'
date_created: 2023-02-20T08:18:14Z
date_published: 2011-12-16T00:00:00Z
date_updated: 2023-02-20T10:29:44Z
day: '16'
doi: 10.1029/2011jd015842
extern: '1'
intvolume: ' 116'
issue: D23
keyword:
- Paleontology
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Earth-Surface Processes
- Geochemistry and Petrology
- Soil Science
- Water Science and Technology
- Ecology
- Aquatic Science
- Forestry
- Oceanography
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2011JD01584
month: '12'
oa: 1
oa_version: Published Version
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
issn:
- 0148-0227
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Spatial and temporal variability of air temperature on a melting glacier:
Atmospheric controls, extrapolation methods and their effect on melt modeling, Juncal
Norte Glacier, Chile'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 116
year: '2011'
...
---
_id: '9148'
abstract:
- lang: eng
text: Several observational studies have shown a tight relationship between tropical
precipitation and column‐integrated water vapor. We show that the observed relationship
in the tropics between column‐integrated water vapor, precipitation, and its variance
can be qualitatively reproduced by a simple and physically motivated two‐layer
model. It has previously been argued that features of this relationship could
be explained by analogy with the theory of continuous phase transitions. Instead,
our model explicitly assumes that the onset of precipitation is governed by a
stability threshold involving boundary‐layer water vapor. This allows us to explain
the precipitation‐humidity relationship over a broader range of water vapor values,
and may explain the observed temperature dependence of the relationship.
article_number: L16804
article_processing_charge: No
article_type: original
author:
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
- first_name: Larissa E.
full_name: Back, Larissa E.
last_name: Back
- first_name: Paul A.
full_name: O'Gorman, Paul A.
last_name: O'Gorman
- first_name: Kerry A.
full_name: Emanuel, Kerry A.
last_name: Emanuel
citation:
ama: Muller CJ, Back LE, O’Gorman PA, Emanuel KA. A model for the relationship between
tropical precipitation and column water vapor. Geophysical Research Letters.
2009;36(16). doi:10.1029/2009gl039667
apa: Muller, C. J., Back, L. E., O’Gorman, P. A., & Emanuel, K. A. (2009). A
model for the relationship between tropical precipitation and column water vapor.
Geophysical Research Letters. American Geophysical Union. https://doi.org/10.1029/2009gl039667
chicago: Muller, Caroline J, Larissa E. Back, Paul A. O’Gorman, and Kerry A. Emanuel.
“A Model for the Relationship between Tropical Precipitation and Column Water
Vapor.” Geophysical Research Letters. American Geophysical Union, 2009.
https://doi.org/10.1029/2009gl039667.
ieee: C. J. Muller, L. E. Back, P. A. O’Gorman, and K. A. Emanuel, “A model for
the relationship between tropical precipitation and column water vapor,” Geophysical
Research Letters, vol. 36, no. 16. American Geophysical Union, 2009.
ista: Muller CJ, Back LE, O’Gorman PA, Emanuel KA. 2009. A model for the relationship
between tropical precipitation and column water vapor. Geophysical Research Letters.
36(16), L16804.
mla: Muller, Caroline J., et al. “A Model for the Relationship between Tropical
Precipitation and Column Water Vapor.” Geophysical Research Letters, vol.
36, no. 16, L16804, American Geophysical Union, 2009, doi:10.1029/2009gl039667.
short: C.J. Muller, L.E. Back, P.A. O’Gorman, K.A. Emanuel, Geophysical Research
Letters 36 (2009).
date_created: 2021-02-15T14:41:28Z
date_published: 2009-08-25T00:00:00Z
date_updated: 2022-01-24T13:50:15Z
day: '25'
doi: 10.1029/2009gl039667
extern: '1'
intvolume: ' 36'
issue: '16'
keyword:
- General Earth and Planetary Sciences
- Geophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1029/2009GL039667
month: '08'
oa: 1
oa_version: Published Version
publication: Geophysical Research Letters
publication_identifier:
issn:
- 0094-8276
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
status: public
title: A model for the relationship between tropical precipitation and column water
vapor
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 36
year: '2009'
...
---
_id: '12658'
abstract:
- lang: eng
text: '[1] During the ablation period 2001 a glaciometeorological experiment was
carried out on Haut Glacier d''Arolla, Switzerland. Five meteorological stations
were installed on the glacier, and one permanent automatic weather station in
the glacier foreland. The altitudes of the stations ranged between 2500 and 3000
m a.s.l., and they were in operation from end of May to beginning of September
2001. The spatial arrangement of the stations and temporal duration of the measurements
generated a unique data set enabling the analysis of the spatial and temporal
variability of the meteorological variables across an alpine glacier. All measurements
were taken at a nominal height of 2 m, and hourly averages were derived for the
analysis. The wind regime was dominated by the glacier wind (mean value 2.8 m
s−1) but due to erosion by the synoptic gradient wind, occasionally the wind would
blow up the valley. A slight decrease in mean 2 m air temperatures with altitude
was found, however the 2 m air temperature gradient varied greatly and frequently
changed its sign. Mean relative humidity was 71% and exhibited limited spatial
variation. Mean incoming shortwave radiation and albedo both generally increased
with elevation. The different components of shortwave radiation are quantified
with a parameterization scheme. Resulting spatial variations are mainly due to
horizon obstruction and reflections from surrounding slopes, i.e., topography.
The effect of clouds accounts for a loss of 30% of the extraterrestrial flux.
Albedos derived from a Landsat TM image of 30 July show remarkably constant values,
in the range 0.49 to 0.50, across snow covered parts of the glacier, while albedo
is highly spatially variable below the zone of continuous snow cover. These results
are verified with ground measurements and compared with parameterized albedo.
Mean longwave radiative fluxes decreased with elevation due to lower air temperatures
and the effect of upper hemisphere slopes. It is shown through parameterization
that this effect would even be more pronounced without the effect of clouds. Results
are discussed with respect to a similar study which has been carried out on Pasterze
Glacier (Austria). The presented algorithms for interpolating, parameterizing
and simulating variables and parameters in alpine regions are integrated in the
software package AMUNDSEN which is freely available to be adapted and further
developed by the community.'
article_number: D03103
article_processing_charge: No
article_type: original
author:
- first_name: Ulrich
full_name: Strasser, Ulrich
last_name: Strasser
- first_name: Javier
full_name: Corripio, Javier
last_name: Corripio
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Paolo
full_name: Burlando, Paolo
last_name: Burlando
- first_name: Ben
full_name: Brock, Ben
last_name: Brock
- first_name: Martin
full_name: Funk, Martin
last_name: Funk
citation:
ama: 'Strasser U, Corripio J, Pellicciotti F, Burlando P, Brock B, Funk M. Spatial
and temporal variability of meteorological variables at Haut Glacier d’Arolla
(Switzerland) during the ablation season 2001: Measurements and simulations. Journal
of Geophysical Research: Atmospheres. 2004;109(D3). doi:10.1029/2003jd003973'
apa: 'Strasser, U., Corripio, J., Pellicciotti, F., Burlando, P., Brock, B., &
Funk, M. (2004). Spatial and temporal variability of meteorological variables
at Haut Glacier d’Arolla (Switzerland) during the ablation season 2001: Measurements
and simulations. Journal of Geophysical Research: Atmospheres. American
Geophysical Union. https://doi.org/10.1029/2003jd003973'
chicago: 'Strasser, Ulrich, Javier Corripio, Francesca Pellicciotti, Paolo Burlando,
Ben Brock, and Martin Funk. “Spatial and Temporal Variability of Meteorological
Variables at Haut Glacier d’Arolla (Switzerland) during the Ablation Season 2001:
Measurements and Simulations.” Journal of Geophysical Research: Atmospheres.
American Geophysical Union, 2004. https://doi.org/10.1029/2003jd003973.'
ieee: 'U. Strasser, J. Corripio, F. Pellicciotti, P. Burlando, B. Brock, and M.
Funk, “Spatial and temporal variability of meteorological variables at Haut Glacier
d’Arolla (Switzerland) during the ablation season 2001: Measurements and simulations,”
Journal of Geophysical Research: Atmospheres, vol. 109, no. D3. American
Geophysical Union, 2004.'
ista: 'Strasser U, Corripio J, Pellicciotti F, Burlando P, Brock B, Funk M. 2004.
Spatial and temporal variability of meteorological variables at Haut Glacier d’Arolla
(Switzerland) during the ablation season 2001: Measurements and simulations. Journal
of Geophysical Research: Atmospheres. 109(D3), D03103.'
mla: 'Strasser, Ulrich, et al. “Spatial and Temporal Variability of Meteorological
Variables at Haut Glacier d’Arolla (Switzerland) during the Ablation Season 2001:
Measurements and Simulations.” Journal of Geophysical Research: Atmospheres,
vol. 109, no. D3, D03103, American Geophysical Union, 2004, doi:10.1029/2003jd003973.'
short: 'U. Strasser, J. Corripio, F. Pellicciotti, P. Burlando, B. Brock, M. Funk,
Journal of Geophysical Research: Atmospheres 109 (2004).'
date_created: 2023-02-20T08:18:57Z
date_published: 2004-02-16T00:00:00Z
date_updated: 2023-02-20T08:40:21Z
day: '16'
doi: 10.1029/2003jd003973
extern: '1'
intvolume: ' 109'
issue: D3
keyword:
- Paleontology
- Space and Planetary Science
- Earth and Planetary Sciences (miscellaneous)
- Atmospheric Science
- Earth-Surface Processes
- Geochemistry and Petrology
- Soil Science
- Water Science and Technology
- Ecology
- Aquatic Science
- Forestry
- Oceanography
- Geophysics
language:
- iso: eng
month: '02'
oa_version: None
publication: 'Journal of Geophysical Research: Atmospheres'
publication_identifier:
issn:
- 0148-0227
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Spatial and temporal variability of meteorological variables at Haut Glacier
d''Arolla (Switzerland) during the ablation season 2001: Measurements and simulations'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2004'
...