2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data
Fifth-Generation Mesoscale Model (Polar MM5) regional climate model was run over the North Atlantic region for 1991–2000. We analyze 24-km output over the Greenland ice sheet to evaluate spatial and temporal variability of the surface mass balance and its subcomponents. The model output is compared...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.510.1836 2023-05-15T16:28:00+02:00 2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data Jason E. Box David H. Bromwich Le-sheng Bai The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.510.1836 http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.510.1836 http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf text ftciteseerx 2016-01-08T09:36:36Z Fifth-Generation Mesoscale Model (Polar MM5) regional climate model was run over the North Atlantic region for 1991–2000. We analyze 24-km output over the Greenland ice sheet to evaluate spatial and temporal variability of the surface mass balance and its subcomponents. The model output is compared with 3 years of automatic weather station (AWS) data from 17 sites to identify biases. Using the in situ data, we derive simple corrections for biases in melt energy and in water vapor fluxes from the surface and from blowing snow. The simulated accumulation rate is in agreement with AWS and snow pit observations. Estimates for runoff and the surface mass balance distribution over the ice sheet are produced using modeled melt volume and a meltwater retention scheme. From the decade investigated, the magnitude of interannual variability in surface mass balance components is tentatively established. The largest variability is concentrated along the ice sheet margin, where both accumulation and ablation rates are largest. The simulated interannual fluctuations suggest a large absolute variability, ±187 km3 yr1 for total ice sheet surface mass balance. Variability in simulated equilibrium line altitude is suggestive of a dominance of thermal variability in the south with increasing importance Text Greenland Ice Sheet North Atlantic Unknown Greenland |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Fifth-Generation Mesoscale Model (Polar MM5) regional climate model was run over the North Atlantic region for 1991–2000. We analyze 24-km output over the Greenland ice sheet to evaluate spatial and temporal variability of the surface mass balance and its subcomponents. The model output is compared with 3 years of automatic weather station (AWS) data from 17 sites to identify biases. Using the in situ data, we derive simple corrections for biases in melt energy and in water vapor fluxes from the surface and from blowing snow. The simulated accumulation rate is in agreement with AWS and snow pit observations. Estimates for runoff and the surface mass balance distribution over the ice sheet are produced using modeled melt volume and a meltwater retention scheme. From the decade investigated, the magnitude of interannual variability in surface mass balance components is tentatively established. The largest variability is concentrated along the ice sheet margin, where both accumulation and ablation rates are largest. The simulated interannual fluctuations suggest a large absolute variability, ±187 km3 yr1 for total ice sheet surface mass balance. Variability in simulated equilibrium line altitude is suggestive of a dominance of thermal variability in the south with increasing importance |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Jason E. Box David H. Bromwich Le-sheng Bai |
spellingShingle |
Jason E. Box David H. Bromwich Le-sheng Bai 2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
author_facet |
Jason E. Box David H. Bromwich Le-sheng Bai |
author_sort |
Jason E. Box |
title |
2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
title_short |
2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
title_full |
2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
title_fullStr |
2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
title_full_unstemmed |
2004), Greenland ice sheet surface mass balance 1991–2000: Application of Polar MM5 mesoscale model and in situ data |
title_sort |
2004), greenland ice sheet surface mass balance 1991–2000: application of polar mm5 mesoscale model and in situ data |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.510.1836 http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_source |
http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.510.1836 http://polarmet.osu.edu/PolarMet/PMGFulldocs/box_bromwich_jgr_2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766017616277667840 |