Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model
Sea ice is an important component of the global climate system. The presence of a snowpack covering sea ice can strongly modify the thermodynamic behavior of the sea ice, due to the low thermal conductivity and high albedo of snow. The snowpack can be stratified and change properties (density, water...
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Online Access: | https://epic.awi.de/id/eprint/53633/ https://epic.awi.de/id/eprint/53633/1/gmd-13-99-2020.pdf https://hdl.handle.net/10013/epic.f4b4ac83-7276-4111-be99-860172d5e195 |
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ftawi:oai:epic.awi.de:53633 2024-09-15T17:42:38+00:00 Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model Wever, Nander Rossmann, Leonard Maaß, Nina Leonard, Katherine C. Kaleschke, Lars Nicolaus, Marcel Lehning, Michael 2020 application/pdf https://epic.awi.de/id/eprint/53633/ https://epic.awi.de/id/eprint/53633/1/gmd-13-99-2020.pdf https://hdl.handle.net/10013/epic.f4b4ac83-7276-4111-be99-860172d5e195 unknown https://epic.awi.de/id/eprint/53633/1/gmd-13-99-2020.pdf Wever, N. , Rossmann, L. orcid:0000-0002-9048-957X , Maaß, N. , Leonard, K. C. , Kaleschke, L. orcid:0000-0001-7086-3299 , Nicolaus, M. orcid:0000-0003-0903-1746 and Lehning, M. (2020) Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model , Geoscientific Model Development, 13 (1), pp. 99-119 . doi:10.5194/gmd-13-99-2020 <https://doi.org/10.5194/gmd-13-99-2020> , hdl:10013/epic.f4b4ac83-7276-4111-be99-860172d5e195 EPIC3Geoscientific Model Development, 13(1), pp. 99-119 Article peerRev 2020 ftawi https://doi.org/10.5194/gmd-13-99-2020 2024-06-24T04:26:11Z Sea ice is an important component of the global climate system. The presence of a snowpack covering sea ice can strongly modify the thermodynamic behavior of the sea ice, due to the low thermal conductivity and high albedo of snow. The snowpack can be stratified and change properties (density, water content, grain size and shape) throughout the seasons. Melting snow provides freshwater which can form melt ponds or cause flushing of salt out of the underlying sea ice, while flooding of the snow layer by saline ocean water can strongly impact both the ice mass balance and the freezing point of the snow. To capture the complex dynamics from the snowpack, we introduce modifications to the physics-based, multi-layer SNOWPACK model to simulate the snow-sea-ice system. Adaptations to the model thermodynamics and a description of water and salt transport through the snow-sea-ice system by coupling the transport equation to the Richards equation were added. These modifications allow the snow microstructure descriptions developed in the SNOWPACK model to be applied to sea ice conditions as well. Here, we drive the model with data from snow and ice mass-balance buoys installed in the Weddell Sea in Antarctica. The model is able to simulate the temporal evolution of snow density, grain size and shape, and snow wetness. The model simulations show abundant depth hoar layers and melt layers, as well as superimposed ice formation due to flooding and percolation. Gravity drainage of dense brine is underestimated as convective processes are so far neglected. Furthermore, with increasing model complexity, detailed forcing data for the simulations are required, which are difficult to acquire due to limited observations in polar regions. Article in Journal/Newspaper Antarc* Antarctica Sea ice Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Geoscientific Model Development 13 1 99 119 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Sea ice is an important component of the global climate system. The presence of a snowpack covering sea ice can strongly modify the thermodynamic behavior of the sea ice, due to the low thermal conductivity and high albedo of snow. The snowpack can be stratified and change properties (density, water content, grain size and shape) throughout the seasons. Melting snow provides freshwater which can form melt ponds or cause flushing of salt out of the underlying sea ice, while flooding of the snow layer by saline ocean water can strongly impact both the ice mass balance and the freezing point of the snow. To capture the complex dynamics from the snowpack, we introduce modifications to the physics-based, multi-layer SNOWPACK model to simulate the snow-sea-ice system. Adaptations to the model thermodynamics and a description of water and salt transport through the snow-sea-ice system by coupling the transport equation to the Richards equation were added. These modifications allow the snow microstructure descriptions developed in the SNOWPACK model to be applied to sea ice conditions as well. Here, we drive the model with data from snow and ice mass-balance buoys installed in the Weddell Sea in Antarctica. The model is able to simulate the temporal evolution of snow density, grain size and shape, and snow wetness. The model simulations show abundant depth hoar layers and melt layers, as well as superimposed ice formation due to flooding and percolation. Gravity drainage of dense brine is underestimated as convective processes are so far neglected. Furthermore, with increasing model complexity, detailed forcing data for the simulations are required, which are difficult to acquire due to limited observations in polar regions. |
format |
Article in Journal/Newspaper |
author |
Wever, Nander Rossmann, Leonard Maaß, Nina Leonard, Katherine C. Kaleschke, Lars Nicolaus, Marcel Lehning, Michael |
spellingShingle |
Wever, Nander Rossmann, Leonard Maaß, Nina Leonard, Katherine C. Kaleschke, Lars Nicolaus, Marcel Lehning, Michael Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
author_facet |
Wever, Nander Rossmann, Leonard Maaß, Nina Leonard, Katherine C. Kaleschke, Lars Nicolaus, Marcel Lehning, Michael |
author_sort |
Wever, Nander |
title |
Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
title_short |
Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
title_full |
Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
title_fullStr |
Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
title_full_unstemmed |
Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model |
title_sort |
version 1 of a sea ice module for the physics-based, detailed, multi-layer snowpack model |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/53633/ https://epic.awi.de/id/eprint/53633/1/gmd-13-99-2020.pdf https://hdl.handle.net/10013/epic.f4b4ac83-7276-4111-be99-860172d5e195 |
genre |
Antarc* Antarctica Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctica Sea ice Weddell Sea |
op_source |
EPIC3Geoscientific Model Development, 13(1), pp. 99-119 |
op_relation |
https://epic.awi.de/id/eprint/53633/1/gmd-13-99-2020.pdf Wever, N. , Rossmann, L. orcid:0000-0002-9048-957X , Maaß, N. , Leonard, K. C. , Kaleschke, L. orcid:0000-0001-7086-3299 , Nicolaus, M. orcid:0000-0003-0903-1746 and Lehning, M. (2020) Version 1 of a sea ice module for the physics-based, detailed, multi-layer SNOWPACK model , Geoscientific Model Development, 13 (1), pp. 99-119 . doi:10.5194/gmd-13-99-2020 <https://doi.org/10.5194/gmd-13-99-2020> , hdl:10013/epic.f4b4ac83-7276-4111-be99-860172d5e195 |
op_doi |
https://doi.org/10.5194/gmd-13-99-2020 |
container_title |
Geoscientific Model Development |
container_volume |
13 |
container_issue |
1 |
container_start_page |
99 |
op_container_end_page |
119 |
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1810489288919351296 |