两类El Nino事件对中国近海及毗邻海域海表温度的影响  

Effects of two types of El Nino events on the sea surface temperature in China’s offshore and adjacent seas

作　　者：李玲莉 王林慧 宋军 郭俊如 富砚昭 蔡宇 LI Ling-li;WANG Lin-hui;SONG Jun;GUO Jun-ru;FU Yan-zhao;CAI Yu(School of Marine Technology and Environment,Dalian Ocean University,Dalian 116023,China;Institute of Applied Oceanography,Dalian Ocean University,Dalian 116023,China)

机构地区：[1]大连海洋大学海洋科技与环境学院,辽宁大连116023 [2]大连海洋大学应用海洋学研究所,辽宁大连116023

出　　处：《海洋科学》2021年第4期51-63,共13页Marine Sciences

基　　金：自然资源部海洋环境信息保障技术重点实验室开放基金;自然资源部海洋信息技术创新中心开放基金;辽宁省“兴辽英才计划”项目(XLYC1807161);大连市高层次人才创新支持计划(2017RQ063);大连海洋大学“湛蓝学者工程”;国家自然科学基金项目(41206013,41430963);辽宁省教育厅项目(QL201905);国家科技支撑计划项目(2014BAB12B02);国家建设高水平大学公派研究生项目(留金出[2008]3019,[2012]2013);辽宁省高等学校海洋产业技术研究院项目;海洋公益性行业科研专项(201205018);辽宁省重点研发计划(2019JH2/10200015);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0402)。

摘　　要：为研究东部型和中部型两类厄尔尼诺(El Nino)事件与中国近海海表温度(sea surface temperature,SST)变化间的联系,基于中国科学院大气物理研究所连续80年(1940—2019年)的SST再分析数据,采用EOF分解、合成分析等方法做了初步分析,发现中国近海及毗邻海域近80年SST变化与全球变暖密切相关。并且两类El Nino事件对中国近海SST变化的影响存在显著差异。东部型El Nino事件发展过程中,中国近海及毗邻海域SST在发展年主要为负异常,衰退期为正异常;中部型El Nino事件发展过程中, SST变化区域差异大,发展年日本附近海域为正异常, 28°N以南为弱的负异常。两类El Nino事件引发西太平洋风场反气旋涡的时间、位置与强度等的不同,是造成中国近海风场与海表温度异常(sea surface temperature anomaly, SSTA)差异的主要原因。This study investigates the relationship between eastern and central-type El Nino events and the sea surface temperature(SST)changes in China’s coastal waters.On the basis of the SST reanalysis data of the Institute of Atmospheric Physics,Chinese Academy of Sciences for 80 consecutive years(1940–2019),a preliminary analysis was conducted using empirical orthogonal function decomposition and synthesis analysis methods.Results showed that the SST changes in China’s coastal waters and adjacent waters in the past 80 years are consistent with global warming.Moreover,significant differences in the impact of the two types of El Nino events on the SST changes in China’s offshore waters are observed.During the development of El Nino in the east,the sea surface temperature anomaly(SSTA)of China’s offshore and adjacent sea areas is a negative anomaly in the development years and a positive anomaly in the recession period.During the development of central-type El Nino,considerable regional differences in SSTA variation are observed.In the developing years,the sea area near Japan is a positive anomaly and the sea area south of 28°N is a weak negative anomaly.The differences in time,position,and intensity of anti-gas vortices caused by the two types of El Ni?o events in the western Pacific Ocean are the main reason for the difference in distance between offshore wind field and SSTA in China.

关 键 词：中国近海 海表温度 经验正交函数法 两类El Nino 

分 类 号：P731[天文地球—海洋科学]