---
_id: '12622'
abstract:
- lang: eng
text: Air temperature is a key control of processes affecting snow and glaciers
in high-elevation catchments, including melt, snowfall and sublimation. It is
therefore a key input variable to models of land–surface–atmosphere interaction.
Despite this importance, its spatial variability is poorly understood and simple
assumptions are made to extrapolate it from point observations to the catchment
scale. We use a dataset of 2.75 years of air temperature measurements (from May
2012 to November 2014) at a network of up to 27 locations in the Langtang River,
Nepal, catchment to investigate air temperature seasonality and consistency between
years. We use observations from high elevations and from the easternmost section
of the basin to corroborate previous findings of shallow lapse rates. Seasonal
variability is strong, with shallowest lapse rates during the monsoon season.
Diurnal variability is also strong and should be taken into account since processes
such as melt have a pronounced diurnal variability. Use of seasonal lapse rates
seems crucial for glacio-hydrological modelling, but seasonal lapse rates seem
stable over the 2–3 years investigated. Lateral variability at transects across
valley is high and dominated by aspect, with south-facing sites being warmer than
north-facing sites and deviations from the fitted lapse rates of up to several
degrees. Local factors (e.g. topographic shading) can reduce or enhance this effect.
The interplay of radiation, aspect and elevation should be further investigated
with high-elevation transects.
article_processing_charge: No
article_type: original
author:
- first_name: Martin
full_name: Heynen, Martin
last_name: Heynen
- first_name: Evan
full_name: Miles, Evan
last_name: Miles
- first_name: Silvan
full_name: Ragettli, Silvan
last_name: Ragettli
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Walter W.
full_name: Immerzeel, Walter W.
last_name: Immerzeel
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
citation:
ama: Heynen M, Miles E, Ragettli S, Buri P, Immerzeel WW, Pellicciotti F. Air temperature
variability in a high-elevation Himalayan catchment. Annals of Glaciology.
2016;57(71):212-222. doi:10.3189/2016aog71a076
apa: Heynen, M., Miles, E., Ragettli, S., Buri, P., Immerzeel, W. W., & Pellicciotti,
F. (2016). Air temperature variability in a high-elevation Himalayan catchment.
Annals of Glaciology. International Glaciological Society. https://doi.org/10.3189/2016aog71a076
chicago: Heynen, Martin, Evan Miles, Silvan Ragettli, Pascal Buri, Walter W. Immerzeel,
and Francesca Pellicciotti. “Air Temperature Variability in a High-Elevation Himalayan
Catchment.” Annals of Glaciology. International Glaciological Society,
2016. https://doi.org/10.3189/2016aog71a076.
ieee: M. Heynen, E. Miles, S. Ragettli, P. Buri, W. W. Immerzeel, and F. Pellicciotti,
“Air temperature variability in a high-elevation Himalayan catchment,” Annals
of Glaciology, vol. 57, no. 71. International Glaciological Society, pp. 212–222,
2016.
ista: Heynen M, Miles E, Ragettli S, Buri P, Immerzeel WW, Pellicciotti F. 2016.
Air temperature variability in a high-elevation Himalayan catchment. Annals of
Glaciology. 57(71), 212–222.
mla: Heynen, Martin, et al. “Air Temperature Variability in a High-Elevation Himalayan
Catchment.” Annals of Glaciology, vol. 57, no. 71, International Glaciological
Society, 2016, pp. 212–22, doi:10.3189/2016aog71a076.
short: M. Heynen, E. Miles, S. Ragettli, P. Buri, W.W. Immerzeel, F. Pellicciotti,
Annals of Glaciology 57 (2016) 212–222.
date_created: 2023-02-20T08:15:25Z
date_published: 2016-03-01T00:00:00Z
date_updated: 2023-02-24T10:25:38Z
day: '01'
doi: 10.3189/2016aog71a076
extern: '1'
intvolume: ' 57'
issue: '71'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2016AoG71A076
month: '03'
oa: 1
oa_version: Published Version
page: 212-222
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Air temperature variability in a high-elevation Himalayan catchment
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2016'
...
---
_id: '12623'
abstract:
- lang: eng
text: Ice cliffs might be partly responsible for the high mass losses of debris-covered
glaciers in the Hindu Kush-Karakoram-Himalaya region. The few existing models
of cliff backwasting are point-scale models applied at few locations or assume
cliffs to be planes with constant slope and aspect, a major simplification given
the complex surfaces of most cliffs. We develop the first grid-based model of
cliff backwasting for two cliffs on debris-covered Lirung Glacier, Nepal. The
model includes an improved representation of shortwave and longwave radiation,
and their interplay with the glacier topography. Shortwave radiation varies considerably
across the two cliffs, mostly due to direct radiation. Diffuse radiation is the
major shortwave component, as the direct component is strongly reduced by the
cliffs’ aspect and slope through self-shading. Incoming longwave radiation is
higher than the total incoming shortwave flux, due to radiation emitted by the
surrounding terrain, which is 25% of the incoming flux. Melt is highly variable
in space, suggesting that simple models provide inaccurate estimates of total
melt volumes. Although only representing 0.09% of the glacier tongue area, the
total melt at the two cliffs over the measurement period is 2313 and 8282 m3,
1.23% of the total melt simulated by a glacio-hydrological model for the glacier’s
tongue.
article_processing_charge: No
article_type: original
author:
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Jakob F.
full_name: Steiner, Jakob F.
last_name: Steiner
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Walter W.
full_name: Immerzeel, Walter W.
last_name: Immerzeel
citation:
ama: Buri P, Pellicciotti F, Steiner JF, Miles ES, Immerzeel WW. A grid-based model
of backwasting of supraglacial ice cliffs on debris-covered glaciers. Annals
of Glaciology. 2016;57(71):199-211. doi:10.3189/2016aog71a059
apa: Buri, P., Pellicciotti, F., Steiner, J. F., Miles, E. S., & Immerzeel,
W. W. (2016). A grid-based model of backwasting of supraglacial ice cliffs on
debris-covered glaciers. Annals of Glaciology. International Glaciological
Society. https://doi.org/10.3189/2016aog71a059
chicago: Buri, Pascal, Francesca Pellicciotti, Jakob F. Steiner, Evan S. Miles,
and Walter W. Immerzeel. “A Grid-Based Model of Backwasting of Supraglacial Ice
Cliffs on Debris-Covered Glaciers.” Annals of Glaciology. International
Glaciological Society, 2016. https://doi.org/10.3189/2016aog71a059.
ieee: P. Buri, F. Pellicciotti, J. F. Steiner, E. S. Miles, and W. W. Immerzeel,
“A grid-based model of backwasting of supraglacial ice cliffs on debris-covered
glaciers,” Annals of Glaciology, vol. 57, no. 71. International Glaciological
Society, pp. 199–211, 2016.
ista: Buri P, Pellicciotti F, Steiner JF, Miles ES, Immerzeel WW. 2016. A grid-based
model of backwasting of supraglacial ice cliffs on debris-covered glaciers. Annals
of Glaciology. 57(71), 199–211.
mla: Buri, Pascal, et al. “A Grid-Based Model of Backwasting of Supraglacial Ice
Cliffs on Debris-Covered Glaciers.” Annals of Glaciology, vol. 57, no.
71, International Glaciological Society, 2016, pp. 199–211, doi:10.3189/2016aog71a059.
short: P. Buri, F. Pellicciotti, J.F. Steiner, E.S. Miles, W.W. Immerzeel, Annals
of Glaciology 57 (2016) 199–211.
date_created: 2023-02-20T08:15:34Z
date_published: 2016-03-01T00:00:00Z
date_updated: 2023-02-24T10:20:24Z
day: '01'
doi: 10.3189/2016aog71a059
extern: '1'
intvolume: ' 57'
issue: '71'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2016AoG71A059
month: '03'
oa: 1
oa_version: Published Version
page: 199-211
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: A grid-based model of backwasting of supraglacial ice cliffs on debris-covered
glaciers
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2016'
...
---
_id: '12624'
abstract:
- lang: eng
text: Supraglacial ponds on debris-covered glaciers present a mechanism of atmosphere/glacier
energy transfer that is poorly studied, and only conceptually included in mass-balance
studies of debris-covered glaciers. This research advances previous efforts to
develop a model of mass and energy balance for supraglacial ponds by applying
a free-convection approach to account for energy exchanges at the subaqueous bare-ice
surfaces. We develop the model using field data from a pond on Lirung Glacier,
Nepal, that was monitored during the 2013 and 2014 monsoon periods. Sensitivity
testing is performed for several key parameters, and alternative melt algorithms
are compared with the model. The pond acts as a significant recipient of energy
for the glacier system, and actively participates in the glacier’s hydrologic
system during the monsoon. Melt rates are 2-4 cm d-1 (total of 98.5 m3 over the
study period) for bare ice in contact with the pond, and <1 mmd-1 (total of 10.6m3)
for the saturated debris zone. The majority of absorbed atmospheric energy leaves
the pond system through englacial conduits, delivering sufficient energy to melt
2612 m3 additional ice over the study period (38.4 m3 d-1). Such melting might
be expected to lead to subsidence of the glacier surface. Supraglacial ponds efficiently
convey atmospheric energy to the glacier’s interior and rapidly promote the downwasting
process.
article_processing_charge: No
article_type: original
author:
- first_name: Evan S.
full_name: Miles, Evan S.
last_name: Miles
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Ian C.
full_name: Willis, Ian C.
last_name: Willis
- first_name: Jakob F.
full_name: Steiner, Jakob F.
last_name: Steiner
- first_name: Pascal
full_name: Buri, Pascal
last_name: Buri
- first_name: Neil S.
full_name: Arnold, Neil S.
last_name: Arnold
citation:
ama: Miles ES, Pellicciotti F, Willis IC, Steiner JF, Buri P, Arnold NS. Refined
energy-balance modelling of a supraglacial pond, Langtang Khola, Nepal. Annals
of Glaciology. 2016;57(71):29-40. doi:10.3189/2016aog71a421
apa: Miles, E. S., Pellicciotti, F., Willis, I. C., Steiner, J. F., Buri, P., &
Arnold, N. S. (2016). Refined energy-balance modelling of a supraglacial pond,
Langtang Khola, Nepal. Annals of Glaciology. International Glaciological
Society. https://doi.org/10.3189/2016aog71a421
chicago: Miles, Evan S., Francesca Pellicciotti, Ian C. Willis, Jakob F. Steiner,
Pascal Buri, and Neil S. Arnold. “Refined Energy-Balance Modelling of a Supraglacial
Pond, Langtang Khola, Nepal.” Annals of Glaciology. International Glaciological
Society, 2016. https://doi.org/10.3189/2016aog71a421.
ieee: E. S. Miles, F. Pellicciotti, I. C. Willis, J. F. Steiner, P. Buri, and N.
S. Arnold, “Refined energy-balance modelling of a supraglacial pond, Langtang
Khola, Nepal,” Annals of Glaciology, vol. 57, no. 71. International Glaciological
Society, pp. 29–40, 2016.
ista: Miles ES, Pellicciotti F, Willis IC, Steiner JF, Buri P, Arnold NS. 2016.
Refined energy-balance modelling of a supraglacial pond, Langtang Khola, Nepal.
Annals of Glaciology. 57(71), 29–40.
mla: Miles, Evan S., et al. “Refined Energy-Balance Modelling of a Supraglacial
Pond, Langtang Khola, Nepal.” Annals of Glaciology, vol. 57, no. 71, International
Glaciological Society, 2016, pp. 29–40, doi:10.3189/2016aog71a421.
short: E.S. Miles, F. Pellicciotti, I.C. Willis, J.F. Steiner, P. Buri, N.S. Arnold,
Annals of Glaciology 57 (2016) 29–40.
date_created: 2023-02-20T08:15:42Z
date_published: 2016-03-01T00:00:00Z
date_updated: 2023-02-24T10:17:29Z
day: '01'
doi: 10.3189/2016aog71a421
extern: '1'
intvolume: ' 57'
issue: '71'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2016AoG71A421
month: '03'
oa: 1
oa_version: Published Version
page: 29-40
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Refined energy-balance modelling of a supraglacial pond, Langtang Khola, Nepal
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2016'
...
---
_id: '12625'
abstract:
- lang: eng
text: Debris-covered glaciers play an important role in the high-altitude water
cycle in the Himalaya, yet their dynamics are poorly understood, partly because
of the difficult fieldwork conditions. In this study we therefore deploy an unmanned
aerial vehicle (UAV) three times (May 2013, October 2013 and May 2014) over the
debris-covered Lirung Glacier in Nepal. The acquired data are processed into orthomosaics
and elevation models by a Structure from Motion workflow, and seasonal surface
velocity is derived using frequency cross-correlation. In order to obtain optimal
surface velocity products, the effects of different input data and correlator
configurations are evaluated, which reveals that the orthomosaic as input paired
with moderate correlator settings provides the best results. The glacier has considerable
spatial and seasonal differences in surface velocity, with maximum summer and
winter velocities 6 and 2.5 m a-1, respectively, in the upper part of the tongue,
while the lower part is nearly stagnant. It is hypothesized that the higher velocities
during summer are caused by basal sliding due to increased lubrication of the
bed. We conclude that UAVs have great potential to quantify seasonal and annual
variations in flow and can help to further our understanding of debris-covered
glaciers.
article_processing_charge: No
article_type: original
author:
- first_name: Philip
full_name: Kraaijenbrink, Philip
last_name: Kraaijenbrink
- first_name: Sander W.
full_name: Meijer, Sander W.
last_name: Meijer
- first_name: Joseph M.
full_name: Shea, Joseph M.
last_name: Shea
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Steven M.
full_name: De Jong, Steven M.
last_name: De Jong
- first_name: Walter W.
full_name: Immerzeel, Walter W.
last_name: Immerzeel
citation:
ama: Kraaijenbrink P, Meijer SW, Shea JM, Pellicciotti F, De Jong SM, Immerzeel
WW. Seasonal surface velocities of a Himalayan glacier derived by automated correlation
of unmanned aerial vehicle imagery. Annals of Glaciology. 2016;57(71):103-113.
doi:10.3189/2016aog71a072
apa: Kraaijenbrink, P., Meijer, S. W., Shea, J. M., Pellicciotti, F., De Jong, S.
M., & Immerzeel, W. W. (2016). Seasonal surface velocities of a Himalayan
glacier derived by automated correlation of unmanned aerial vehicle imagery. Annals
of Glaciology. International Glaciological Society. https://doi.org/10.3189/2016aog71a072
chicago: Kraaijenbrink, Philip, Sander W. Meijer, Joseph M. Shea, Francesca Pellicciotti,
Steven M. De Jong, and Walter W. Immerzeel. “Seasonal Surface Velocities of a
Himalayan Glacier Derived by Automated Correlation of Unmanned Aerial Vehicle
Imagery.” Annals of Glaciology. International Glaciological Society, 2016.
https://doi.org/10.3189/2016aog71a072.
ieee: P. Kraaijenbrink, S. W. Meijer, J. M. Shea, F. Pellicciotti, S. M. De Jong,
and W. W. Immerzeel, “Seasonal surface velocities of a Himalayan glacier derived
by automated correlation of unmanned aerial vehicle imagery,” Annals of Glaciology,
vol. 57, no. 71. International Glaciological Society, pp. 103–113, 2016.
ista: Kraaijenbrink P, Meijer SW, Shea JM, Pellicciotti F, De Jong SM, Immerzeel
WW. 2016. Seasonal surface velocities of a Himalayan glacier derived by automated
correlation of unmanned aerial vehicle imagery. Annals of Glaciology. 57(71),
103–113.
mla: Kraaijenbrink, Philip, et al. “Seasonal Surface Velocities of a Himalayan Glacier
Derived by Automated Correlation of Unmanned Aerial Vehicle Imagery.” Annals
of Glaciology, vol. 57, no. 71, International Glaciological Society, 2016,
pp. 103–13, doi:10.3189/2016aog71a072.
short: P. Kraaijenbrink, S.W. Meijer, J.M. Shea, F. Pellicciotti, S.M. De Jong,
W.W. Immerzeel, Annals of Glaciology 57 (2016) 103–113.
date_created: 2023-02-20T08:15:56Z
date_published: 2016-03-01T00:00:00Z
date_updated: 2023-02-24T10:11:46Z
day: '01'
doi: 10.3189/2016aog71a072
extern: '1'
intvolume: ' 57'
issue: '71'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2016AoG71A072
month: '03'
oa: 1
oa_version: Published Version
page: 103-113
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Seasonal surface velocities of a Himalayan glacier derived by automated correlation
of unmanned aerial vehicle imagery
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2016'
...
---
_id: '12641'
abstract:
- lang: eng
text: We investigate the sensitivity of a distributed enhanced temperature-index
(ETI) melt model, in order to understand which parameters have the largest influence
on model outputs and thus need to be accurately known. We use melt and meteorological
data from two Alpine glaciers and one glacier in the Andes of Chile. Sensitivity
analysis is conducted in a systematic way in terms of parameters and the different
conditions (day, night, clear-sky, overcast), melt seasons and glaciers examined.
The sensitivity of total melt to changes in individual parameters is calculated
using a local method around the optimal value of the parameters. We verify that
the parameters are optimal at the distributed scale and assess the model uncertainty
induced by uncertainty in the parameters using a Monte Carlo technique. Model
sensitivity to parameters is consistent across melt seasons, glaciers, different
conditions and the daily statistics examined. The parameters to which the model
is most sensitive are the shortwave-radiation factor, the temperature lapse rate
for extrapolation of air temperature, the albedo parameters, the temperature threshold
and the cloud transmittance factor parameters. A parameter uncertainty of 5% results
in a model uncertainty of 5.6% of mean melt on Haut Glacier d’Arolla, Switzerland.
article_processing_charge: No
article_type: original
author:
- first_name: Martin
full_name: Heynen, Martin
last_name: Heynen
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Marco
full_name: Carenzo, Marco
last_name: Carenzo
citation:
ama: Heynen M, Pellicciotti F, Carenzo M. Parameter sensitivity of a distributed
enhanced temperature-index melt model. Annals of Glaciology. 2013;54(63):311-321.
doi:10.3189/2013aog63a537
apa: Heynen, M., Pellicciotti, F., & Carenzo, M. (2013). Parameter sensitivity
of a distributed enhanced temperature-index melt model. Annals of Glaciology.
International Glaciological Society. https://doi.org/10.3189/2013aog63a537
chicago: Heynen, Martin, Francesca Pellicciotti, and Marco Carenzo. “Parameter Sensitivity
of a Distributed Enhanced Temperature-Index Melt Model.” Annals of Glaciology.
International Glaciological Society, 2013. https://doi.org/10.3189/2013aog63a537.
ieee: M. Heynen, F. Pellicciotti, and M. Carenzo, “Parameter sensitivity of a distributed
enhanced temperature-index melt model,” Annals of Glaciology, vol. 54,
no. 63. International Glaciological Society, pp. 311–321, 2013.
ista: Heynen M, Pellicciotti F, Carenzo M. 2013. Parameter sensitivity of a distributed
enhanced temperature-index melt model. Annals of Glaciology. 54(63), 311–321.
mla: Heynen, Martin, et al. “Parameter Sensitivity of a Distributed Enhanced Temperature-Index
Melt Model.” Annals of Glaciology, vol. 54, no. 63, International Glaciological
Society, 2013, pp. 311–21, doi:10.3189/2013aog63a537.
short: M. Heynen, F. Pellicciotti, M. Carenzo, Annals of Glaciology 54 (2013) 311–321.
date_created: 2023-02-20T08:17:21Z
date_published: 2013-08-01T00:00:00Z
date_updated: 2023-02-21T10:43:42Z
day: '01'
doi: 10.3189/2013aog63a537
extern: '1'
intvolume: ' 54'
issue: '63'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2013aog63a537
month: '08'
oa: 1
oa_version: Published Version
page: 311-321
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Parameter sensitivity of a distributed enhanced temperature-index melt model
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 54
year: '2013'
...
---
_id: '12642'
abstract:
- lang: eng
text: Near-surface air temperature, typically measured at a height of 2 m, is the
most important control on the energy exchange and the melt rate at a snow or ice
surface. It is distributed in a simplistic manner in most glacier melt models
by using constant linear lapse rates, which poorly represent the actual spatial
and temporal variability of air temperature. In this paper, we test a simple thermodynamic
model proposed by Greuell and Böhm in 1998 as an alternative, using a new dataset
of air temperature measurements from along the flowline of Haut Glacier d’Arolla,
Switzerland. The unmodified model performs little better than assuming a constant
linear lapse rate. When modified to allow the ratio of the boundary layer height
to the bulk heat transfer coefficient to vary along the flowline, the model matches
measured air temperatures better, and a further reduction of the root-mean-square
error is obtained, although there is still considerable scope for improvement.
The modified model is shown to perform best under conditions favourable to the
development of katabatic winds – few clouds, positive ambient air temperature,
limited influence of synoptic or valley winds and a long fetch – but its performance
is poor under cloudy conditions.
article_processing_charge: No
article_type: original
author:
- first_name: Lene
full_name: Petersen, Lene
last_name: Petersen
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Inge
full_name: Juszak, Inge
last_name: Juszak
- first_name: Marco
full_name: Carenzo, Marco
last_name: Carenzo
- first_name: Ben
full_name: Brock, Ben
last_name: Brock
citation:
ama: 'Petersen L, Pellicciotti F, Juszak I, Carenzo M, Brock B. Suitability of a
constant air temperature lapse rate over an Alpine glacier: Testing the Greuell
and Böhm model as an alternative. Annals of Glaciology. 2013;54(63):120-130.
doi:10.3189/2013aog63a477'
apa: 'Petersen, L., Pellicciotti, F., Juszak, I., Carenzo, M., & Brock, B. (2013).
Suitability of a constant air temperature lapse rate over an Alpine glacier: Testing
the Greuell and Böhm model as an alternative. Annals of Glaciology. International
Glaciological Society. https://doi.org/10.3189/2013aog63a477'
chicago: 'Petersen, Lene, Francesca Pellicciotti, Inge Juszak, Marco Carenzo, and
Ben Brock. “Suitability of a Constant Air Temperature Lapse Rate over an Alpine
Glacier: Testing the Greuell and Böhm Model as an Alternative.” Annals of Glaciology.
International Glaciological Society, 2013. https://doi.org/10.3189/2013aog63a477.'
ieee: 'L. Petersen, F. Pellicciotti, I. Juszak, M. Carenzo, and B. Brock, “Suitability
of a constant air temperature lapse rate over an Alpine glacier: Testing the Greuell
and Böhm model as an alternative,” Annals of Glaciology, vol. 54, no. 63.
International Glaciological Society, pp. 120–130, 2013.'
ista: 'Petersen L, Pellicciotti F, Juszak I, Carenzo M, Brock B. 2013. Suitability
of a constant air temperature lapse rate over an Alpine glacier: Testing the Greuell
and Böhm model as an alternative. Annals of Glaciology. 54(63), 120–130.'
mla: 'Petersen, Lene, et al. “Suitability of a Constant Air Temperature Lapse Rate
over an Alpine Glacier: Testing the Greuell and Böhm Model as an Alternative.”
Annals of Glaciology, vol. 54, no. 63, International Glaciological Society,
2013, pp. 120–30, doi:10.3189/2013aog63a477.'
short: L. Petersen, F. Pellicciotti, I. Juszak, M. Carenzo, B. Brock, Annals of
Glaciology 54 (2013) 120–130.
date_created: 2023-02-20T08:17:29Z
date_published: 2013-08-01T00:00:00Z
date_updated: 2023-02-21T10:18:24Z
day: '01'
doi: 10.3189/2013aog63a477
extern: '1'
intvolume: ' 54'
issue: '63'
keyword:
- Earth-Surface Processes
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/2013aog63a477
month: '08'
oa: 1
oa_version: Published Version
page: 120-130
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Suitability of a constant air temperature lapse rate over an Alpine glacier:
Testing the Greuell and Böhm model as an alternative'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 54
year: '2013'
...
---
_id: '12655'
abstract:
- lang: eng
text: We discuss the inclusion of the subsurface heat-conduction flux into the calculation
of the energy balance and ablation at the glacier–atmosphere interface. Data from
automatic weather stations are used to force an energy-balance model at several
locations on alpine glaciers and at one site in the dry Andes of central Chile.
The heat-conduction flux is computed using a two-layer scheme, assuming that 36%
of the net shortwave radiation is absorbed by the surface layer and that the rest
penetrates into the snowpack. We compare simulations conducted with and without
subsurface heat flux. Results show that assuming a surface temperature of zero
degrees leads to a larger overestimation of melt at the sites in the accumulation
area (10.4–13.3%) than in the ablation area (0.5–2.8%), due to lower air temperatures
and the presence of snow. The difference between simulations with and without
heat conduction is also high at the beginning and end of the ablation season (up
to 29% for the first 15 days of the season), when air temperatures are lower and
snow covers the glacier surface, while they are of little importance during periods
of sustained melt at all the locations investigated.
article_processing_charge: No
article_type: original
author:
- first_name: Francesca
full_name: Pellicciotti, Francesca
id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70
last_name: Pellicciotti
- first_name: Marco
full_name: Carenzo, Marco
last_name: Carenzo
- first_name: Jakob
full_name: Helbing, Jakob
last_name: Helbing
- first_name: Stefan
full_name: Rimkus, Stefan
last_name: Rimkus
- first_name: Paolo
full_name: Burlando, Paolo
last_name: Burlando
citation:
ama: Pellicciotti F, Carenzo M, Helbing J, Rimkus S, Burlando P. On the role of
subsurface heat conduction in glacier energy-balance modelling. Annals of Glaciology.
2009;50(50):16-24. doi:10.3189/172756409787769555
apa: Pellicciotti, F., Carenzo, M., Helbing, J., Rimkus, S., & Burlando, P.
(2009). On the role of subsurface heat conduction in glacier energy-balance modelling.
Annals of Glaciology. International Glaciological Society. https://doi.org/10.3189/172756409787769555
chicago: Pellicciotti, Francesca, Marco Carenzo, Jakob Helbing, Stefan Rimkus, and
Paolo Burlando. “On the Role of Subsurface Heat Conduction in Glacier Energy-Balance
Modelling.” Annals of Glaciology. International Glaciological Society,
2009. https://doi.org/10.3189/172756409787769555.
ieee: F. Pellicciotti, M. Carenzo, J. Helbing, S. Rimkus, and P. Burlando, “On the
role of subsurface heat conduction in glacier energy-balance modelling,” Annals
of Glaciology, vol. 50, no. 50. International Glaciological Society, pp. 16–24,
2009.
ista: Pellicciotti F, Carenzo M, Helbing J, Rimkus S, Burlando P. 2009. On the role
of subsurface heat conduction in glacier energy-balance modelling. Annals of Glaciology.
50(50), 16–24.
mla: Pellicciotti, Francesca, et al. “On the Role of Subsurface Heat Conduction
in Glacier Energy-Balance Modelling.” Annals of Glaciology, vol. 50, no.
50, International Glaciological Society, 2009, pp. 16–24, doi:10.3189/172756409787769555.
short: F. Pellicciotti, M. Carenzo, J. Helbing, S. Rimkus, P. Burlando, Annals of
Glaciology 50 (2009) 16–24.
date_created: 2023-02-20T08:18:40Z
date_published: 2009-01-01T00:00:00Z
date_updated: 2023-02-20T09:00:53Z
day: '01'
doi: 10.3189/172756409787769555
extern: '1'
intvolume: ' 50'
issue: '50'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3189/172756409787769555
month: '01'
oa: 1
oa_version: Published Version
page: 16-24
publication: Annals of Glaciology
publication_identifier:
eissn:
- 1727-5644
issn:
- 0260-3055
publication_status: published
publisher: International Glaciological Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the role of subsurface heat conduction in glacier energy-balance modelling
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 50
year: '2009'
...