南海海洋站观测海气热通量的时间演变特征  

VARIATION CHARACTERISTICS OF AIR-SEA HEAT FLUX AT OCEAN OBSERVATION STATIONS IN SOUTH CHINA SEA

作　　者：吴迪生[1] 许建平[2] 王以琳[3] 闫敬华[4] 冯伟忠[1] 黎广媚[1] 白毅平[1] 张红梅[1] 张纪伟[1] 赵雪[1] 

机构地区：[1]国家海洋局南海预报中心,广东广州510300 [2]国家海洋局海洋动力过程与卫星海洋学重点实验室,浙江杭州310012 [3]山东省气象科学研究所,山东济南250031 [4]中国气象局广州热带海洋气象研究所,广东广州510080

出　　处：《热带气象学报》2005年第5期517-524,共8页Journal of Tropical Meteorology

基　　金：广东省自然科学基金项目(04102749);国家科技部攀登项目A"南海季风试验研究";国家重点基础研究发展规划项目(G1998040900-1);国家海洋局海洋动力过程与卫星海洋学重点实验室共同资助

摘　　要：为探索西沙和南沙海气热通量时间演变特征,用海洋站观测资料计算了1998年南海夏季风爆发前后,海气界面热量交换值及海面热收支年循环。结果表明:季风爆发前,西沙海气界面热量交换较弱,水汽通量较小,以海洋获得热量为主;季风爆发后,海气界面热量交换接近平衡。南沙全年主要是海洋对大气加热。南沙和西沙海面吸收短波辐射年周期特征明显,极大值出现在冬半年。西沙海面潜热通量存在半年周期特征,极大值也是出现在冬半年。结论:冬半年海面热通量变化对翌年的季风将产生重要影响。In order to study the variation characteristics of heat flux at Nansha and Xisha Islands in the South China Sea, the observational data from the ocean stations are calculated to obtain air-sea heat exchanges and the annual circulation of heat budget around the summer monsoon onset in 1998. The results show that before the summer monsoon onset, the air-sea heat exchange near Xisha area is weak, the vapor flux is small and the main trend is that the ocean is being heated; while after its onset, the air-sea heat exchange is balanced roughly. It is almost all the year around in Nansha that the sea heats the air. The characteristics of the annual period of absorbing shortwave radiation on sea surface are remarkable in Nansha and Xisha, with the maximum appearing in the winter-half year. The half-year cycle of latent heat flux exists in the Xisha area, with the maximum appearing in winter. Therefore it can be concluded that the heat flux exchange in the winter-half year plays an important role on the monsoon onset in the coming year.

关 键 词：南中国海 海洋站 南海夏季风 热量交换 

分 类 号：P714.2[天文地球—海洋科学]