| Snow and sea ice thermodynamics in the Arctic： Model validation and sensitivity study against SHEBA data |
| |
| 作者姓名： | Timo Vihma |
| |
| 作者单位： | [1]Finnish Institute of Marine Research （FIMR） , P. O. Box 33, FI-90931, Helsinki, Finland [2]State Oceanic Administration Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai200136, China [3]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China |
| |
| 基金项目： | supported by the EC-funded project DAMOCLES (grant 18509); which is part of the Sixth Framework Program of DFG(grant LU 818/1-1); Natural Science Foundation of China(grants No.40233032,40376006). |
| |
| 摘 要： | Evolution of the Arctic sea ice and its snow cover during the SHEBA year were simulated by applying a high-resolution thermodynamic snow/ice model （HIGHTSI）. Attention was paid to the impact of albedo on snow and sea ice mass balance, effect of snow on total ice mass balance, and the model vertical resolution. The SHEBA annual simulation was made applying the best possible external forcing data set created by the Sea Ice Model Intercomparison Project. The HIGHTSI control run reasonably reproduced the observed snow and ice thickness. A number of albedo schemes were incorporated into HIGHTSI to study the feedback processes between the albedo and snow and ice thickness. The snow thickness turned out to be an essential variable in the albedo parameterization. Albedo schemes dependent on the surface temperature were liable to excessive positive feedback effects generated by errors in the modelled surface temperature. The superimposed ice formation should be taken into account for the annual Arctic sea ice mass balance.
|
| 关 键 词： | 北极海冰 模型验证 热力学 敏感性 积雪厚度 物质平衡 模拟应用 反馈作用 |
Snow and sea ice thermodynamics in the Arctic: Model validation and sensitivity study against SHEBA data |
| |
| Timo Vihma.Snow and sea ice thermodynamics in the Arctic: Model validation and sensitivity study against SHEBA data[J].Chinese Journal of Polar Science,2008,19(2):108-122. |
| |
| Authors: | CHENG Bin Timo Vihma ZHANG Zhan-hai LI Zhi-jun WU Hui-ding |
| |
| Abstract: | Evolution of the Arctic sea ice and its snow cover during the SHEBA year were simulated by applying a high-resolution thermodynamic snow/ice model (HIGHTSI). Attention was paid to the impact of albedo on snow and sea ice mass balance, effect of snow on total ice mass balance, and the model vertical resolution.The SHEBA annual simulation was made applying the best possible external forcing data set created by the Sea Ice Model Intercomparison Project. The HIGHTSI control run reasonably reproduced the observed snow and ice thickness. A number of albedo schemes were incorporated into HIGHTSI to study the feedhack processes between the albedo and snow and ice thickness. The snow thickness turned out to be an essential variable in the albedo parametetization. Albedo schemes dependent on the surface temperature were liable to excessive positive feedback effects generated by errors in the modelled surface temperature. The superimposed ice formation should be taken into account for the annual Arctic sea ice mass balance. |
| |
| Keywords: | Arctic sea ice Model validation and sensitivity study SHEBA data |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
