CAJ | 학술논문

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.
채용동해흑조주류단장시간서렬적실측온염자료,연구료동해흑조상층온도、상층염도적변화급기여중국동부강수화지면기온적관계.결과표명,재과거50년내,동해흑조상층해온정상승추세,이상층염도략정하강추세.동해흑조상층해온화아국동부지면기온적관계재동계십분밀절,정현출대면적현저적정상관,저여동계남하랭공기적정체강온작용유관.하계,장강중하유강수적증다치사대량장강충담수입해,도치흑조상층수염도하강,차시동해흑조상층염도여아국대륙동부강수정부상관.
Using long term observation data in the main part of East China Sea Kuroshio, variations of Kuroshio upper layer temperature and salinity, their relationships with surface temperature and precipitation in east China are studied. Results reveal that the Kuroshio upper layer temperature experienced slight rise while salinity decreased in the past 50 years. In winter, Kuroshio upper layer temperature is closely related to the surface temperature in east China, and large area in east China shows positive correlation to the Kuroshio upper layer temperature, which might be related to the mass temperature reduction as a result of the cold air activities in winter. In summer, the increase of the precipitation causes the increase of diluted Yangtze River water into the shelf sea, thereby results in the salinity decrease of Kuroshio in the upper layer.