| 摘要: |
| 利用NCEP850hPa风场和OLR资料,分析了南海地区西南风和OLR的气候变化规律以及它们之间的相互关系,提出了一个反映南海西南季风变化的季风指数,并初步分析了南海西南季风的强度变化和建立时间．发现南海夏季风季节变化具有双峰型,夏季风建立时间和强度的年际变化与海表面温度相关,El Nino年南海夏季风建立得早和强,反之亦然。 |
| 关键词: 夏季风 建立 强度 南海 |
| DOI： |
| 分类号: |
| 基金项目:科技部攀登A项目“南海季风试验研究”;广东省气象局科学基金 |
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| THE RESEARCH ON VARIATIONS OF ONSET TIME OF THE SCS SUMMER MONSOON AND ITS INTENSITY |
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Liang Jianyin, Wu Shangsen, You Jiping
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Guangzhou Institute of Tropical and Oceanic Meteorology, Guanzhou, 510080
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| Abstract: |
| In this paper, using winds of 850hPa from NCEP reanalysis and OLR, the variations ofboth SW wind components and OLR over South China Sea (SCS) and the relations between themare discussed. An index of the SCS summer monsoon is proposed. The features of intensity andonset time of SCS summer monsoon are analyzed. It has been found that the seasonal variationsof SCS summer monsoon pessess the characteristic of two-peak pattern. The intra-annual variations of,intensity and onset time are linked with the SST anomalies. SCS summer monsoon willstart early and be strong in El Nino year, it is reversed in La Nina year. |
| Key words: Summer monsoon Onset Intensity South China sea |
