中国海洋大学学报（自然科学版）2025，Vol.55Issue(10)：19-31,13.DOI:10.16441/j.cnki.hdxb.20240295
晚秋北大西洋海温与欧亚大陆西北部表面气温关系的年代际变化特征及成因
Interdecadal Changes of the Relationship Between Late Autumn Sea Surface Temperature in North Atlantic and Surface Air Temperature in Northwestern Eurasia:Characteristics and Mechanism
摘要
Abstract
This study uses ERA5 reanalysis data from 1940 to 2022 to investigate the decadal variation characteristics and causes of the correlation between sea surface temperature(SST)anomalies in North Atlantic and surface air temperature in northwestern Eurasia(NWESAT).The research reveals that the correlation between North Atlantic SST and NWESAT is significant during two high epochs,1940-1981 and 2001-2008.During these epochs,the SST anomalies associated with NWESAT exhibit a hor-seshoe pattern.In contrast,during low epochs,the SST anomalies display a tripole pattern.Further analysis of the reasons behind the changes in correlation shows that,in the high epoch,SST anomalies lead NWESAT,with higher sea surface temperatures north of the Gulf Stream,creating better moisture conditions,more precipitation,and stronger upper-level diabatic heating.Additionally,there is more active eddy-mediated processes above the Gulf Stream,with stronger wave sources in the upper atmos-phere to the north of the current,promoting the development of upper-level wave trains.In low epoch,the SST anomalies mainly exhibit a tripole pattern,with lower sea surface temperatures north of the Gulf Stream,weakening the ocean influence on the atmosphere and causing a lag in SST anomalies rela-tive to NWESAT.Therefore,the decadal variations in the correlation between North Atlantic SST anomalies and NWESAT are primarily driven by differences in SST anomaly patterns and their modula-tion of atmospheric wave trains over time.关键词
北大西洋海温异常/欧亚大陆西北部表面气温/相关性的年代际变化/涡旋介导/非绝热加热Key words
sea surface temperature anomaly in North Atlantic/surface air temperature in Northwestern Eurasia/decadal changes in correlation/eddy-mediated processes/diabatic heating分类
天文与地球科学引用本文复制引用
吕东方,贾英来,杜天琪..晚秋北大西洋海温与欧亚大陆西北部表面气温关系的年代际变化特征及成因[J].中国海洋大学学报（自然科学版）,2025,55(10):19-31,13.基金项目
国家自然科学基金项目(41975065) （41975065）
泰山学者攀登计划项目(ZR2019ZD12)资助 Supported by the National Natural Science Foundation of China(41975065) （ZR2019ZD12）
the Taishan Panddeng Scholar Project(ZR2019ZD12) （ZR2019ZD12）
