Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation
Abstract We apply a linear model of orographic precipitation (LT model) to estimate snow accumulation on the western Svartisen ice cap (220 km 2 ) in northern Norway. This model combines 3D airflow dynamics with simple parameterizations of cloud physics. The model is forced by large‐scale atmospheri...
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crwiley:10.1002/hyp.7073 2024-09-15T18:07:53+00:00 Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation Schuler, T. V. Crochet, P. Hock, R. Jackson, M. Barstad, I. Jóhannesson, T. 2008 http://dx.doi.org/10.1002/hyp.7073 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.7073 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.7073 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 22, issue 19, page 3998-4008 ISSN 0885-6087 1099-1085 journal-article 2008 crwiley https://doi.org/10.1002/hyp.7073 2024-08-27T04:28:55Z Abstract We apply a linear model of orographic precipitation (LT model) to estimate snow accumulation on the western Svartisen ice cap (220 km 2 ) in northern Norway. This model combines 3D airflow dynamics with simple parameterizations of cloud physics. The model is forced by large‐scale atmospheric input variables taken from the ECMWF Re‐analysis (ERA‐40) of the European Center for Medium Range Weather Forecast (ECMWF), and the model parameters are kept constant for the entire simulation period, after optimization. The domain covers a 120 × 125 km area surrounding the ice cap. The model is run using a 1‐km resolution digital elevation model, and 6‐h time steps over the period from 1958 to 2002. Precipitation data from surrounding meteorological stations and winter glacier mass balance measurements on several glaciers within the region are used to evaluate the model results. Precipitation obtained from the LT model agrees well with observations from precipitation gauges and there is also fair agreement between model results and specific winter mass balance observations on the ice cap if these are corrected for winter rain. The LT model reproduces well the spatial pattern of winter accumulation across the ice cap as well as the area‐averaged winter mass balances of several other glaciers in the region. This indicates that it is a useful tool in providing high‐resolution, deterministic estimates of precipitation in complex terrain as required for distributed hydrological and/or glacier mass balance modelling of unmeasured areas. Copyright © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper glacier Ice cap Northern Norway Svartisen Wiley Online Library Hydrological Processes 22 19 3998 4008 |
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Open Polar |
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Wiley Online Library |
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language |
English |
description |
Abstract We apply a linear model of orographic precipitation (LT model) to estimate snow accumulation on the western Svartisen ice cap (220 km 2 ) in northern Norway. This model combines 3D airflow dynamics with simple parameterizations of cloud physics. The model is forced by large‐scale atmospheric input variables taken from the ECMWF Re‐analysis (ERA‐40) of the European Center for Medium Range Weather Forecast (ECMWF), and the model parameters are kept constant for the entire simulation period, after optimization. The domain covers a 120 × 125 km area surrounding the ice cap. The model is run using a 1‐km resolution digital elevation model, and 6‐h time steps over the period from 1958 to 2002. Precipitation data from surrounding meteorological stations and winter glacier mass balance measurements on several glaciers within the region are used to evaluate the model results. Precipitation obtained from the LT model agrees well with observations from precipitation gauges and there is also fair agreement between model results and specific winter mass balance observations on the ice cap if these are corrected for winter rain. The LT model reproduces well the spatial pattern of winter accumulation across the ice cap as well as the area‐averaged winter mass balances of several other glaciers in the region. This indicates that it is a useful tool in providing high‐resolution, deterministic estimates of precipitation in complex terrain as required for distributed hydrological and/or glacier mass balance modelling of unmeasured areas. Copyright © 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Schuler, T. V. Crochet, P. Hock, R. Jackson, M. Barstad, I. Jóhannesson, T. |
spellingShingle |
Schuler, T. V. Crochet, P. Hock, R. Jackson, M. Barstad, I. Jóhannesson, T. Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
author_facet |
Schuler, T. V. Crochet, P. Hock, R. Jackson, M. Barstad, I. Jóhannesson, T. |
author_sort |
Schuler, T. V. |
title |
Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
title_short |
Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
title_full |
Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
title_fullStr |
Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
title_full_unstemmed |
Distribution of snow accumulation on the Svartisen ice cap, Norway, assessed by a model of orographic precipitation |
title_sort |
distribution of snow accumulation on the svartisen ice cap, norway, assessed by a model of orographic precipitation |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/hyp.7073 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.7073 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.7073 |
genre |
glacier Ice cap Northern Norway Svartisen |
genre_facet |
glacier Ice cap Northern Norway Svartisen |
op_source |
Hydrological Processes volume 22, issue 19, page 3998-4008 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.7073 |
container_title |
Hydrological Processes |
container_volume |
22 |
container_issue |
19 |
container_start_page |
3998 |
op_container_end_page |
4008 |
_version_ |
1810445237678505984 |