| 摘要: |
| 根据日本气象厅1956–1990年PN（G）断面观测资料分析东海黑潮热输送的变异特征，并探讨其冬季热输送与黄淮平原区汛期（6–8月）降水的关系。结果表明，黑潮通过PN（G）断面多年平均的热输送达15.74×1014W，其中冬季热输送的年际和长期变化特别明显；冬季热输送年际变化的周期主要为23.4a、3.5a和2.6a，长期变化总趋势是70年代末以前各年热输送距平均为负值，对年代末接近多年平均值，进入80年代各年距平值不仅为正且逐年增大；东海黑潮冬季热输送与黄淮平原区汛期降水具有相近的长期变化趋势，两者间存在较好的负相关关系。 |
| 关键词: 黑潮 热输送 汛期降水 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院ky85－10项目资助 |
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| THE KUROSHIO HEAT TRANSPORT IN THE EAST CHINA SEA AND ITS RELATION TO THE PRECIPITATION IN THE RAINY SEASON IN THE HUANGHUAI PLAIN AREA |
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Weng Xuechuan, Zhang Qilong, Yang Yuling, Yan Tingzhuang
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Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071
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| Abstract: |
| This paper details analysis on the variational properties of the Kuroshio heat transport in the East China Sea and the relation between its heat transport in winter and the precipitation during the rainy season in the Huanghuai Plain. The results show that the Kuroshio transports a huge amount of heat from the low latitude sea area to the East China Sea all the year round. The multiple-year mean annual heat transport through section PN(G) is about 15.74×1014W; the heat transport in winter has especially obvious interannual variation with 23.4 year, 3.5 year and 2.6
year periods and long-term change. The long-term change trend is characterized by heat transport negative anomalies before the end of the l970’s, and by values almost equal to the multiple-year mean in the end of the l970’s. During the l980’s, and the anomalies were positive and larger year by year; the Kuroshio heat transport in the East China Sea in winter has nearly the same interamrual change period as that of the precipitation in the rainy season in the Huanghuai Plain area, but the long-term change is opposite to that of the precipitation. There is good negative correlation between them, with correlation coefficients in the same year and by 10 year running mean being -0.49 and -0.79, respectively, with over 0.01 level of confidence. |
| Key words: Kuroshio, Heat transport, Precipitation |
