中国东部海区经向热力差异对夏季南京气候变化的影响  

The Effect of Meridional Thermal Difference in Eastern Marginal Seas of China to Climate Change in Nanjing During Summer

作　　者：孙即霖[1] 丛明[1] 吴德星[1] 高山红[1] 

机构地区：[1]中国海洋大学物理海洋教育部重点实验室,山东省高校海洋-大气相互作用与气候重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2012年第5期1-6,共6页Periodical of Ocean University of China

基　　金：国家自然科学基金重点项目(40930844;10735030);国家自然科学基金项目(40676012)资助

摘　　要：研究东海黑潮流区海域与黄海海域海水热含量在水平方向上的差异(以下简称经向热力差异Meridional Ther-mal Difference,MTD)对其西侧陆地(以南京为代表)气候变化的影响。利用WRF模式进行的数值模拟试验和对南京的实测结果分析表明,MTD的加强,使我国东部地区夏季风减弱,减弱了向东的水汽和热量输送,对陆地气候造成了比较大的影响。对SODA再分析资料的分析表明,自1979—2010年,7月份的MTD有增强的趋势;对南京气温实测资料的分析表明,对应东部海区MTD较强的年份,东部地区西南夏季风减弱,使南京气温异常偏低。The affection of meridional thermal difference（MTD） of heat content anomaly between the East China Sea and the Yellow Sea on climate at mainland of China are investigated.Numerical simulations by WRF model and data analysis of observational temperature in Nanjing show that the enhanced intensity of MTD can decrease summer monsoon over China East and decrease the air temperature in Nanjing.Analysis of time series of MTD by reanalysis data of SODA shows that there is a trend of increasing in MTD.Regression analysis between the wind anomaly of 925hPa and temperature anomaly in Nanjing gives result that during the year when MTD is strong summer monsoon is decreased which is corresponded to a decrease temperature in Nanjing in July.

关 键 词：中国东部海区 经向热力差异(MTD) 东向热量与水汽输送 影响陆地气候变化 

分 类 号：P732[天文地球—海洋科学]