论文部分内容阅读
采用东海黑潮主流段长时间序列的实测温盐资料,研究了东海黑潮上层温度、上层盐度的变化及其与中国东部降水和地面气温的关系。结果表明,在过去50年内,东海黑潮上层海温呈上升趋势,而上层盐度略呈下降趋势。东海黑潮上层海温和我国东部地面气温的关系在冬季十分密切,呈现出大面积显著的正相关,这与冬季南下冷空气的整体降温作用有关。夏季,长江中下游江水的增多致使大量长江冲淡水入海,导致黑潮上层水盐度下降,此时东海黑潮上层盐度与我国大陆东部降水呈负相关。
Based on the long-time temperature and salinity data collected from the mainstream of the Kuroshio in the East China Sea, the relationship between the upper Kuroshio temperature in the East China Sea and the upper salinity and its relationship with the precipitation and ground temperature in eastern China was studied. The results show that during the past 50 years, the temperature of the upper Kuroshio in the East China Sea has been on an upward trend while that of the upper salinity has been on a downward trend. The relationship between the upper Kuroshio sea temperature in the East China Sea and the ground temperature in the eastern part of China is very close in winter and shows a significant positive correlation with large area, which is related to the overall cooling effect of cold air in the south of the East China Sea. In summer, the increase of river water in the middle and lower reaches of the Yangtze River resulted in a large amount of freshwater from the Yangtze River entering the sea, resulting in a decrease in salinity of the upper Kuroshio. At this time, the salinity of the upper Kuroshio in the East China Sea was negatively correlated with precipitation in the eastern part of the mainland.