Evaluation of snow/ice albedo parameterizations and their impacts on sea ice simulations
Evaluation of snow/ice albedo parameterizations and their impacts on sea ice simulations
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DOI：
10.1002/joc.1373
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发表时间：
2007-01
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影响因子：
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通讯作者：
Jiping Liu;Zhanhai Zhang;J. Inoue;R. Horton
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文献类型：
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作者：
Jiping Liu;Zhanhai Zhang;J. Inoue;R. Horton
气候模式使用各种雪/冰覆盖的海洋的冰参数化。在这项研究中，我们应用了现场测量，从北冰洋表面热量收支（SHEBA）获得的（表面温度、雪深和冰厚）作为四种不同雪/冰对流参数化的输入值（代表独立海冰模式、数值天气预报和北极盆地区域气候模式以及耦合全球气候模式中使用的参数化范围），并针对SHEBA观察到的Rectodo评估参数化的Rectodos。结果表明，这些参数化给出了非常不同的表示的表面张力。还评估了输入值中的系统偏差对参数化参数的影响。为了进一步了解海冰过程是如何受到海冰参数化差异的影响，我们使用一个独立的流域尺度海冰动力学/热力学模型研究了海冰的基线特征和海冰对外部扰动的响应。结果表明，足够复杂的APDDO处理可以产生更真实的流域尺度冰分布，并可能随着气候变暖而产生更真实的冰响应。版权所有© 2006年皇家气象学会
Climate models use a variety of snow/ice albedo parameterizations for the ice covered ocean. In this study, we applied in situ measurements (surface temperature, snow depth and ice thickness) obtained from the Surface Heat Budget of the Arctic Ocean (SHEBA) as input values to four different snow/ice albedo parameterizations (representing the spectrum of parameterizations used in stand‐alone sea ice models, numerical weather prediction and regional climate models of the Arctic Basin, and coupled global climate models), and evaluated the parameterized albedos against the SHEBA observed albedo. Results show that these parameterizations give very different representations of surface albedo. The impacts of systematic biases in the input values on the parameterized albedos were also assessed. To further understand how sea ice processes are influenced by differences in the albedo parameterizations, we examined baseline sea ice characteristics and responses of sea ice to an external perturbation for the simulations of the albedo parameterizations using a stand‐alone basin‐scale dynamic/thermodynamic sea ice model. Results show that an albedo treatment of sufficient complexity can produce more realistic basin‐scale ice distributions, and likely more realistic ice responses as climate warms. Copyright © 2006 Royal Meteorological Society