侧边界融化对北极海冰影响的数值模拟

对NCAR CSIM5 海冰模式中海冰侧边界融化参数化方案进行了详细阐述，并利用CSIM5模式模拟了侧边界融化对北极海冰厚度和海冰面积变化的影响，试验结果表明：（1）侧边界融化热力过程会增大海冰厚度和海冰面积的消融，海冰厚度消融最明显的区域分布在西伯利亚海和格陵兰海，海冰面积消融最明显区域分布海冰边缘地区；（2）侧边界融化过程对夏季海冰厚度影响比冬季更为明显，而对冬季海冰面积的影响要比夏季更为明显；（3）侧边界融化方案能更好地模拟出海冰面积的季节性变化；（4）海水表面温度（SST）是影响海冰侧边界融化过程的重要因子，侧边界融化率的大值区分布在SST零度线附近的狭窄区域。

NUMERICAL SIMULATIONS OF THE EFFECTS OF LATERAL MELTING ON ARCTIC SEA ICE

Sea ice lateral melting parameterization scheme of Community Sea Ice Model version 5(CSIM5) is described in detail. Then we used the CSIM5 to simulate the effect of Sea ice lateral melting parameterization scheme on the change of the thickness and area of sea ice. The results show that: (1) Lateral melting thermal process will decrease sea ice thickness and sea ice area. The significant thickness ablation regions distribute in the Siberian Sea and the Greenland Sea and significant the sea ice area of ablation regions distribute around sea ice edge region ; (2) Lateral melting impact on sea ice thickness more obvious in summer than in winter, impact on sea ice area more significant in winter than in summer ; (3) The lateral melting scheme can better simulate the sea ice area seasonal changes;(4) Sea Surface Temperature (SST) is the very important impact factor on the sea ice lateral melting process and the large values of the lateral boundary melting rate distribute near the SST zero line .