[{"publication":"Water Resources Research","language":[{"iso":"eng"}],"scopus_import":"1","intvolume":"        49","oa":1,"date_updated":"2023-02-24T08:16:19Z","issue":"9","article_processing_charge":"No","title":"Sources of uncertainty in modeling the glaciohydrological response of a Karakoram watershed to climate change","type":"journal_article","status":"public","publication_identifier":{"issn":["0043-1397"]},"month":"03","day":"01","oa_version":"Published Version","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1002/wrcr.20450"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Ragettli","first_name":"S.","full_name":"Ragettli, S."},{"first_name":"Francesca","full_name":"Pellicciotti, Francesca","last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70"},{"last_name":"Bordoy","first_name":"R.","full_name":"Bordoy, R."},{"full_name":"Immerzeel, W. W.","first_name":"W. W.","last_name":"Immerzeel"}],"doi":"10.1002/wrcr.20450","article_type":"original","_id":"12639","year":"2013","date_created":"2023-02-20T08:17:12Z","citation":{"short":"S. Ragettli, F. Pellicciotti, R. Bordoy, W.W. Immerzeel, Water Resources Research 49 (2013) 6048–6066.","ama":"Ragettli S, Pellicciotti F, Bordoy R, Immerzeel WW. Sources of uncertainty in modeling the glaciohydrological response of a Karakoram watershed to climate change. <i>Water Resources Research</i>. 2013;49(9):6048-6066. doi:<a href=\"https://doi.org/10.1002/wrcr.20450\">10.1002/wrcr.20450</a>","ieee":"S. Ragettli, F. Pellicciotti, R. Bordoy, and W. W. Immerzeel, “Sources of uncertainty in modeling the glaciohydrological response of a Karakoram watershed to climate change,” <i>Water Resources Research</i>, vol. 49, no. 9. American Geophysical Union, pp. 6048–6066, 2013.","chicago":"Ragettli, S., Francesca Pellicciotti, R. Bordoy, and W. W. Immerzeel. “Sources of Uncertainty in Modeling the Glaciohydrological Response of a Karakoram Watershed to Climate Change.” <i>Water Resources Research</i>. American Geophysical Union, 2013. <a href=\"https://doi.org/10.1002/wrcr.20450\">https://doi.org/10.1002/wrcr.20450</a>.","mla":"Ragettli, S., et al. “Sources of Uncertainty in Modeling the Glaciohydrological Response of a Karakoram Watershed to Climate Change.” <i>Water Resources Research</i>, vol. 49, no. 9, American Geophysical Union, 2013, pp. 6048–66, doi:<a href=\"https://doi.org/10.1002/wrcr.20450\">10.1002/wrcr.20450</a>.","ista":"Ragettli S, Pellicciotti F, Bordoy R, Immerzeel WW. 2013. Sources of uncertainty in modeling the glaciohydrological response of a Karakoram watershed to climate change. Water Resources Research. 49(9), 6048–6066.","apa":"Ragettli, S., Pellicciotti, F., Bordoy, R., &#38; Immerzeel, W. W. (2013). Sources of uncertainty in modeling the glaciohydrological response of a Karakoram watershed to climate change. <i>Water Resources Research</i>. American Geophysical Union. <a href=\"https://doi.org/10.1002/wrcr.20450\">https://doi.org/10.1002/wrcr.20450</a>"},"keyword":["Water Science and Technology"],"publisher":"American Geophysical Union","date_published":"2013-03-01T00:00:00Z","page":"6048-6066","extern":"1","quality_controlled":"1","volume":49,"abstract":[{"lang":"eng","text":"In the headwater catchments of the main Asian rivers, glaciohydrological models are a useful tool to anticipate impacts of climatic changes. However, the reliability of their projections strongly depends on the quality and quantity of data that are available for parameter estimation, model calibration and validation, as well as on the accuracy of climate change projections. In this study the physically oriented, glaciohydrological model TOPKAPI-ETH is used to simulate future changes in snow, glacier, and runoff from the Hunza River Basin in northern Pakistan. Three key sources of model uncertainty in future runoff projections are compared: model parameters, climate projections, and natural climate variability. A novel approach, applicable also to ungauged catchments, is used to determine which model parameters and model components significantly affect the overall model uncertainty. We show that the model is capable of reproducing streamflow and glacier mass balances, but that all analyzed sources of uncertainty significantly affect the reliability of future projections, and that their effect is variable in time and in space. The effect of parametric uncertainty often exceeds the impact of climate uncertainty and natural climate variability, especially in heavily glacierized subcatchments. The results of the uncertainty analysis allow detailed recommendations on network design and the timing and location of field measurements, which could efficiently help to reduce model uncertainty in the future."}],"publication_status":"published"},{"article_type":"original","_id":"12648","doi":"10.1029/2012jd017795","date_created":"2023-02-20T08:17:57Z","citation":{"apa":"Reid, T. D., Carenzo, M., Pellicciotti, F., &#38; Brock, B. W. (2012). Including debris cover effects in a distributed model of glacier ablation. <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union. <a href=\"https://doi.org/10.1029/2012jd017795\">https://doi.org/10.1029/2012jd017795</a>","short":"T.D. Reid, M. Carenzo, F. Pellicciotti, B.W. Brock, Journal of Geophysical Research: Atmospheres 117 (2012).","ama":"Reid TD, Carenzo M, Pellicciotti F, Brock BW. Including debris cover effects in a distributed model of glacier ablation. <i>Journal of Geophysical Research: Atmospheres</i>. 2012;117(D18). doi:<a href=\"https://doi.org/10.1029/2012jd017795\">10.1029/2012jd017795</a>","ieee":"T. D. Reid, M. Carenzo, F. Pellicciotti, and B. W. Brock, “Including debris cover effects in a distributed model of glacier ablation,” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 117, no. D18. American Geophysical Union, 2012.","mla":"Reid, T. D., et al. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 117, no. D18, D18105, American Geophysical Union, 2012, doi:<a href=\"https://doi.org/10.1029/2012jd017795\">10.1029/2012jd017795</a>.","chicago":"Reid, T. D., M. Carenzo, Francesca Pellicciotti, and B. W. Brock. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union, 2012. <a href=\"https://doi.org/10.1029/2012jd017795\">https://doi.org/10.1029/2012jd017795</a>.","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."},"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"],"year":"2012","article_number":"D18105","extern":"1","quality_controlled":"1","volume":117,"publisher":"American Geophysical Union","date_published":"2012-09-27T00:00:00Z","publication_status":"published","abstract":[{"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%.","lang":"eng"}],"language":[{"iso":"eng"}],"publication":"Journal of Geophysical Research: Atmospheres","title":"Including debris cover effects in a distributed model of glacier ablation","date_updated":"2023-02-20T10:57:31Z","oa":1,"issue":"D18","article_processing_charge":"No","intvolume":"       117","scopus_import":"1","type":"journal_article","status":"public","author":[{"last_name":"Reid","first_name":"T. D.","full_name":"Reid, T. D."},{"full_name":"Carenzo, M.","first_name":"M.","last_name":"Carenzo"},{"full_name":"Pellicciotti, Francesca","first_name":"Francesca","last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70"},{"full_name":"Brock, B. W.","first_name":"B. W.","last_name":"Brock"}],"main_file_link":[{"url":"https://doi.org/10.1029/2012JD017795","open_access":"1"}],"oa_version":"Published Version","day":"27","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"09","publication_identifier":{"issn":["0148-0227"]}},{"intvolume":"       116","scopus_import":"1","oa":1,"date_updated":"2023-02-20T10:29:44Z","article_processing_charge":"No","issue":"D23","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","publication":"Journal of Geophysical Research: Atmospheres","language":[{"iso":"eng"}],"publication_identifier":{"issn":["0148-0227"]},"month":"12","day":"16","main_file_link":[{"url":"https://doi.org/10.1029/2011JD01584","open_access":"1"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Petersen","full_name":"Petersen, L.","first_name":"L."},{"full_name":"Pellicciotti, Francesca","first_name":"Francesca","last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70"}],"type":"journal_article","status":"public","article_number":"D23109","year":"2011","date_created":"2023-02-20T08:18:14Z","citation":{"short":"L. Petersen, F. Pellicciotti, Journal of Geophysical Research: Atmospheres 116 (2011).","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. <i>Journal of Geophysical Research: Atmospheres</i>. 2011;116(D23). doi:<a href=\"https://doi.org/10.1029/2011jd015842\">10.1029/2011jd015842</a>","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,” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 116, no. D23. American Geophysical Union, 2011.","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.” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 116, no. D23, D23109, American Geophysical Union, 2011, doi:<a href=\"https://doi.org/10.1029/2011jd015842\">10.1029/2011jd015842</a>.","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.” <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union, 2011. <a href=\"https://doi.org/10.1029/2011jd015842\">https://doi.org/10.1029/2011jd015842</a>.","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.","apa":"Petersen, L., &#38; 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. <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union. <a href=\"https://doi.org/10.1029/2011jd015842\">https://doi.org/10.1029/2011jd015842</a>"},"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"],"doi":"10.1029/2011jd015842","_id":"12651","article_type":"original","abstract":[{"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.","lang":"eng"}],"publication_status":"published","publisher":"American Geophysical Union","date_published":"2011-12-16T00:00:00Z","extern":"1","quality_controlled":"1","volume":116},{"language":[{"iso":"eng"}],"publication":"Water Resources Research","title":"Effect of glaciers on streamflow trends in the Swiss Alps","date_updated":"2023-02-20T09:39:29Z","oa":1,"article_processing_charge":"No","issue":"10","scopus_import":"1","intvolume":"        46","type":"journal_article","status":"public","author":[{"last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70","first_name":"Francesca","full_name":"Pellicciotti, Francesca"},{"first_name":"A.","full_name":"Bauder, A.","last_name":"Bauder"},{"last_name":"Parola","first_name":"M.","full_name":"Parola, M."}],"day":"01","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1029/2009WR009039"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"issn":["0043-1397"],"eissn":["1944-7973"]},"month":"10","_id":"12653","article_type":"original","doi":"10.1029/2009wr009039","citation":{"short":"F. Pellicciotti, A. Bauder, M. Parola, Water Resources Research 46 (2010).","ieee":"F. Pellicciotti, A. Bauder, and M. Parola, “Effect of glaciers on streamflow trends in the Swiss Alps,” <i>Water Resources Research</i>, vol. 46, no. 10. American Geophysical Union, 2010.","ama":"Pellicciotti F, Bauder A, Parola M. Effect of glaciers on streamflow trends in the Swiss Alps. <i>Water Resources Research</i>. 2010;46(10). doi:<a href=\"https://doi.org/10.1029/2009wr009039\">10.1029/2009wr009039</a>","ista":"Pellicciotti F, Bauder A, Parola M. 2010. Effect of glaciers on streamflow trends in the Swiss Alps. Water Resources Research. 46(10), W10522.","chicago":"Pellicciotti, Francesca, A. Bauder, and M. Parola. “Effect of Glaciers on Streamflow Trends in the Swiss Alps.” <i>Water Resources Research</i>. American Geophysical Union, 2010. <a href=\"https://doi.org/10.1029/2009wr009039\">https://doi.org/10.1029/2009wr009039</a>.","mla":"Pellicciotti, Francesca, et al. “Effect of Glaciers on Streamflow Trends in the Swiss Alps.” <i>Water Resources Research</i>, vol. 46, no. 10, W10522, American Geophysical Union, 2010, doi:<a href=\"https://doi.org/10.1029/2009wr009039\">10.1029/2009wr009039</a>.","apa":"Pellicciotti, F., Bauder, A., &#38; Parola, M. (2010). Effect of glaciers on streamflow trends in the Swiss Alps. <i>Water Resources Research</i>. American Geophysical Union. <a href=\"https://doi.org/10.1029/2009wr009039\">https://doi.org/10.1029/2009wr009039</a>"},"date_created":"2023-02-20T08:18:27Z","keyword":["Water Science and Technology"],"year":"2010","article_number":"W10522","extern":"1","quality_controlled":"1","volume":46,"publisher":"American Geophysical Union","date_published":"2010-10-01T00:00:00Z","publication_status":"published","abstract":[{"lang":"eng","text":"Daily streamflow from stations close to five Swiss glaciers is analyzed for trends with the Mann-Kendall test. We consider a common period of record (1974–2004) and longer periods based on data availability. The trend statistical significance is tested on annual and seasonal bases. We also examine changes in precipitation, temperature, and snow cover characteristics. Highly glacierized basins show statistically significant positive trends in annual streamflow caused by increasing streamflow in spring and summer. Trends are more numerous and stronger at lower and mid than at the upper quantiles. The basin characterized by lower glacier coverage, conversely, does not exhibit consistently statistically significant trends. Changes in precipitation are not sufficient to explain the observed streamflow trends. Air temperature sees an increase in mean, minimum, and maximum values at all sites. Variations in the seasonal snow accumulation and ablation process are evident. Solid precipitation is decreasing at all sites and trends may be due to a shift from snowfall into rainfall. Mean snow depth is also decreasing, and its duration is getting shorter because of a decrease in solid precipitation and enhanced melting. Trend magnitude attenuates with longer time series. Contrasting trends are detected for different subperiods in the last 70 years: statistically significant negative trends are observed in the periods 1944–1974 and 1954–1984 for Aletschgletscher, in contrast with the results for the common period. These trends are explained by different rates of ice volume changes, and the sign of trends is clearly related to phases of positive or negative glacier mass balance."}]},{"day":"15","oa_version":"None","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"09","publication_identifier":{"eissn":["1099-1085"],"issn":["0885-6087"]},"author":[{"first_name":"Francesca","full_name":"Pellicciotti, Francesca","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70","last_name":"Pellicciotti"},{"last_name":"Helbing","full_name":"Helbing, Jakob","first_name":"Jakob"},{"first_name":"Andrés","full_name":"Rivera, Andrés","last_name":"Rivera"},{"last_name":"Favier","first_name":"Vincent","full_name":"Favier, Vincent"},{"full_name":"Corripio, Javier","first_name":"Javier","last_name":"Corripio"},{"last_name":"Araos","full_name":"Araos, José","first_name":"José"},{"first_name":"Jean-Emmanuel","full_name":"Sicart, Jean-Emmanuel","last_name":"Sicart"},{"full_name":"Carenzo, Marco","first_name":"Marco","last_name":"Carenzo"}],"type":"journal_article","status":"public","scopus_import":"1","intvolume":"        22","title":"A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity","date_updated":"2023-02-20T08:48:33Z","article_processing_charge":"No","issue":"19","publication":"Hydrological Processes","language":[{"iso":"eng"}],"abstract":[{"text":"We use meteorological data from two automatic weather stations (AWS) on Juncal Norte Glacier, central Chile, to investigate the glacier–climate interaction and to test ablation models of different complexity. The semi-arid Central Andes are characterized by dry summers, with precipitation close to zero, low relative humidity and intense solar radiation. We show that katabatic forcing is dominant both on the glacier tongue and in the fore field, and that low humidity and absence of clouds cause strong radiative cooling of the glacier surface. Surface albedo is basically constant for snow and ice, because of the scarcity of solid precipitation. The energy balance of the glacier is simulated for a 2-month period in austral summer using two models of different complexity, which differ in the inclusion of the heat conduction flux into the snowpack and in the parameterization of the incoming longwave radiation. Net shortwave radiation is the dominant component of the energy balance. The sensible heat flux is always positive, while both the net longwave radiation and latent heat flux are negative. Neglecting the subsurface heat flux and corresponding variations in surface temperature leads to an overestimation of ablation of 2% over a total of 3695 mm water equivalent (w.e.) at the end of the season. Correct modelling of incoming longwave radiation is crucial, and we suggest that parameterizations based on vapour pressure and air temperature should be used rather than on computed cloud amount. We also used an enhanced temperature-index model incorporating the shortwave radiation flux, which has two empirical parameters. We apply it both with values of parameters obtained for Alpine glaciers and recalibrated on Juncal Norte. The model recalibrated against the correct energy balance simulations performs very well. The model parameters respond to the meteorological conditions typical of this climatic setting.","lang":"eng"}],"publication_status":"published","page":"3980-3997","extern":"1","volume":22,"quality_controlled":"1","publisher":"Wiley","date_published":"2008-09-15T00:00:00Z","citation":{"ista":"Pellicciotti F, Helbing J, Rivera A, Favier V, Corripio J, Araos J, Sicart J-E, Carenzo M. 2008. A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity. Hydrological Processes. 22(19), 3980–3997.","mla":"Pellicciotti, Francesca, et al. “A Study of the Energy Balance and Melt Regime on Juncal Norte Glacier, Semi-Arid Andes of Central Chile, Using Melt Models of Different Complexity.” <i>Hydrological Processes</i>, vol. 22, no. 19, Wiley, 2008, pp. 3980–97, doi:<a href=\"https://doi.org/10.1002/hyp.7085\">10.1002/hyp.7085</a>.","chicago":"Pellicciotti, Francesca, Jakob Helbing, Andrés Rivera, Vincent Favier, Javier Corripio, José Araos, Jean-Emmanuel Sicart, and Marco Carenzo. “A Study of the Energy Balance and Melt Regime on Juncal Norte Glacier, Semi-Arid Andes of Central Chile, Using Melt Models of Different Complexity.” <i>Hydrological Processes</i>. Wiley, 2008. <a href=\"https://doi.org/10.1002/hyp.7085\">https://doi.org/10.1002/hyp.7085</a>.","ieee":"F. Pellicciotti <i>et al.</i>, “A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity,” <i>Hydrological Processes</i>, vol. 22, no. 19. Wiley, pp. 3980–3997, 2008.","ama":"Pellicciotti F, Helbing J, Rivera A, et al. A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity. <i>Hydrological Processes</i>. 2008;22(19):3980-3997. doi:<a href=\"https://doi.org/10.1002/hyp.7085\">10.1002/hyp.7085</a>","short":"F. Pellicciotti, J. Helbing, A. Rivera, V. Favier, J. Corripio, J. Araos, J.-E. Sicart, M. Carenzo, Hydrological Processes 22 (2008) 3980–3997.","apa":"Pellicciotti, F., Helbing, J., Rivera, A., Favier, V., Corripio, J., Araos, J., … Carenzo, M. (2008). A study of the energy balance and melt regime on Juncal Norte Glacier, semi-arid Andes of central Chile, using melt models of different complexity. <i>Hydrological Processes</i>. Wiley. <a href=\"https://doi.org/10.1002/hyp.7085\">https://doi.org/10.1002/hyp.7085</a>"},"date_created":"2023-02-20T08:18:45Z","keyword":["Water Science and Technology"],"year":"2008","doi":"10.1002/hyp.7085","article_type":"original","_id":"12656"},{"status":"public","type":"journal_article","author":[{"last_name":"Strasser","full_name":"Strasser, Ulrich","first_name":"Ulrich"},{"last_name":"Corripio","first_name":"Javier","full_name":"Corripio, Javier"},{"last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70","full_name":"Pellicciotti, Francesca","first_name":"Francesca"},{"full_name":"Burlando, Paolo","first_name":"Paolo","last_name":"Burlando"},{"last_name":"Brock","first_name":"Ben","full_name":"Brock, Ben"},{"full_name":"Funk, Martin","first_name":"Martin","last_name":"Funk"}],"oa_version":"None","day":"16","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"issn":["0148-0227"]},"month":"02","language":[{"iso":"eng"}],"publication":"Journal of Geophysical Research: Atmospheres","title":"Spatial and temporal variability of meteorological variables at Haut Glacier d'Arolla (Switzerland) during the ablation season 2001: Measurements and simulations","date_updated":"2023-02-20T08:40:21Z","article_processing_charge":"No","issue":"D3","scopus_import":"1","intvolume":"       109","extern":"1","volume":109,"quality_controlled":"1","publisher":"American Geophysical Union","date_published":"2004-02-16T00:00:00Z","publication_status":"published","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_type":"original","_id":"12658","doi":"10.1029/2003jd003973","citation":{"apa":"Strasser, U., Corripio, J., Pellicciotti, F., Burlando, P., Brock, B., &#38; Funk, M. (2004). Spatial and temporal variability of meteorological variables at Haut Glacier d’Arolla (Switzerland) during the ablation season 2001: Measurements and simulations. <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union. <a href=\"https://doi.org/10.1029/2003jd003973\">https://doi.org/10.1029/2003jd003973</a>","short":"U. Strasser, J. Corripio, F. Pellicciotti, P. Burlando, B. Brock, M. Funk, Journal of Geophysical Research: Atmospheres 109 (2004).","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,” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 109, no. D3. American Geophysical Union, 2004.","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. <i>Journal of Geophysical Research: Atmospheres</i>. 2004;109(D3). doi:<a href=\"https://doi.org/10.1029/2003jd003973\">10.1029/2003jd003973</a>","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.” <i>Journal of Geophysical Research: Atmospheres</i>, vol. 109, no. D3, D03103, American Geophysical Union, 2004, doi:<a href=\"https://doi.org/10.1029/2003jd003973\">10.1029/2003jd003973</a>.","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.” <i>Journal of Geophysical Research: Atmospheres</i>. American Geophysical Union, 2004. <a href=\"https://doi.org/10.1029/2003jd003973\">https://doi.org/10.1029/2003jd003973</a>.","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."},"date_created":"2023-02-20T08:18:57Z","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"],"year":"2004","article_number":"D03103"}]