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在全球变暖的背景下,北极海冰在发生快速变化,海冰覆盖范围明显减小,厚度显著变薄,积雪/海冰—反照率正反馈机制在此背景下变得愈发重要。气候系统和单一海冰模式采用了从简单到复杂的海冰反照率参数化方案。首先对模式中的海冰反照率参数化进行了回顾,并结合对现有卫星反照率产品问题的分析,概述了前人对参数化的评估研究工作。在此基础上进一步讨论了气候模式中海冰反照率参数化方案存在的问题,一方面目前的反照率参数化对海冰融池和冰间水道等物理过程的考虑还不够完善,另一方面反照率参数化方案的发展受到观测数据可用性的制约。最后对参数化的发展方向进行了初步探讨。
In the context of global warming, Arctic sea ice is rapidly changing, the sea ice coverage is significantly reduced, the thickness is significantly thinner, snow / sea ice - albedo positive feedback mechanism in this context has become increasingly important. The climate system and the single sea ice mode employ a parametric scheme of sea ice albedo from simple to complex. Firstly, the parameterization of sea ice albedo in the model was reviewed. Based on the analysis of existing satellite albedo products, the previous work on parameterization evaluation was summarized. On this basis, the problems existing in the parameterization scheme of sea ice albedo in climate model are further discussed. On the one hand, the current parameterization of albedo does not consider the physical processes such as the sea ice melting pool and the inter-ice watercourse. The other is that the albedo The development of the rate parameterization scheme is constrained by the availability of observational data. Finally, the development of parameterization was discussed.