| 普里兹湾海冰季节性变化的高分辨率数值模拟 |
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| 引用本文： | 李群,吴辉碇,张璐.普里兹湾海冰季节性变化的高分辨率数值模拟[J].海洋学报,2011,33(5):32-38. |
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| 作者姓名： | 李群 吴辉碇 张璐 |
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| 作者单位： | 1.中国极地研究中心, 上海 200136 |
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| 基金项目： | 国家自然科学青年基金项目(40906099);中国极地战略研究基金资助(20080223);中国极地研究中心极地科学青年创新基金。 |
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| 摘 要： | 普里兹湾海冰以一年冰为主,海冰覆盖存在较大的季节性变化.海冰的分布及其季节性变化主要受当地大气环流及海流的影响.基于一个海洋-海冰耦和模式,模拟研究了该海区海冰的季节性变化特征.海洋模式基于MIT环流模式(MITgcm),海冰动力学模式参考Hibler类型的VP模型,热力学过程取自Winton三层模型.模式区域覆盖整个...
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| 关 键 词： | 普里兹湾 海冰 冰-海耦合模式 冰间湖 |
| 收稿时间： | 2009/11/24 0:00:00 |
Fine-scale simulation of the seasonal variations of sea ice cover in the Prydz bay, Antarctic |
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| LI Qun,WU Hui-ding and ZHANG Lu.Fine-scale simulation of the seasonal variations of sea ice cover in the Prydz bay, Antarctic[J].Acta Oceanologica Sinica (in Chinese),2011,33(5):32-38. |
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| Authors: | LI Qun WU Hui-ding and ZHANG Lu |
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| Institution: | 1.Polar Research Institute of China, Shanghai, 200136,China2.Polar Research Institute of China, Shanghai, 200136,China;National Marine Environment Forecast Center, Beijing 100081,China3.Polar Research Institute of China, Shanghai, 200136,China;The Second Institute of Oceanography, State Oceanic Administration, Hangzhou310012,China |
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| Abstract: | Prydz Bay is almost partially covered by sea ice all year. The distribution of sea ice and its annual variation are controlled mainly by the meteorological conditions and ocean currents. To model the seasonal variation of sea ice, a coupled ice-ocean model has been developed. The ocean model based on the MITgcm, and the ice model is based on the viscous-plastic rheology of Hibler and Winton three-layer reformulated thermodynamics. The model domain encompasses Prydz Bay (75°~55°S, 50°~100°E,) and with a grid resolution of (1/6)°×(1/12)° degree (latitude/longitude, average 6 km). Forcing fields are computed from 6-hourly NCEP reanalysis. The main features of the model simulations include an increasing ice cover from March to August, an approximately constant ice cover from August to November and a decreasing ice cover from November to February. In mid-September, polynyas start to develop at three coastal regions, temporal and spatial characteristics of the three polynyas are well reproduced and compare with available satellite data. Thick ice up to 3 m is piled up at the east end of the West Ice Shelf due to westward alongcoast current. |
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| Keywords: | Prydz Bay sea ice ice-ocean coupled model polynyas |
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