一种海冰热力过程参数化方案  

PARAMETERIZATION OF SEA ICE THERMODYNAMIC PROCESS

作　　者：王可光[1] 白珊[1] 吴辉碇[1] 

机构地区：[1]国家海洋环境预报中心

出　　处：《海洋预报》1999年第3期104-113,共10页Marine Forecasts

基　　金：国家自然科学基金!49876003; 597339170;九五攻关项目! 96-908-02-03和818-06-04课题

摘　　要：由于海冰热力过程太复杂，难于精确计算冰面和水面热量收支方程中的每一项，并且净热量收支比每项小得多，因此难以确定海冰热力一动力模式中的净热通量。本文根据渤海的水文气象观测，详细分析了太阳短波辐射、长波辐射、云量、感热和潜热等对海冰热力增长函数的贡献，给出了一种海冰热力过程的参数化方案。并选取２个典型的个例进行了对比研究。模拟结果表明，该参数化方案能较好地模拟渤海海冰的热力过程。It is difficult to estimate the net heat flux in a dynamic -thermodynamic sea ice model, because sea ice thermodynamic process is too complex to exactly determine each term in the heat budget equations on ice and sea surfaces and the net heat flux is quite smaller than each of the terms. In this paper, the physical variables relating to sea ice thermodynamics, such as solar short wave radiation, long wave radiation, cloud, sensible heat and latent heat, are analyzed in detail according to the hydrological and meteorological observations in the Bobal Sea. And a parameterization scheme is presented. Two typical cases are studied by using the scheme for making a comparison between the dynamic-thermodynamic model with the sea ice thermodynamic process and the dynamic model without the thermodynamic process. The result shows this parameterization scheme is good to forecast the sea ice thermodynamic process in the Bobal Sea.

关 键 词：海冰热力过程 热力增长函数 参数化 海冰 

分 类 号：P731.15[天文地球—海洋科学]