热带大西洋对东亚气候的影响  

Influence of Tropical Atlantic Ocean on the Climate of East Asia

作　　者：王健博 李婧语 蔡金波 WANG Jianbo(Liaoyuan Meteorological Bureau,Liaoyuan,Jilin 136200)

机构地区：[1]辽源市气象局,吉林辽源136200

出　　处：《农业灾害研究》2022年第11期1-3,共3页Journal of Agricultural Catastrophology

摘　　要：运用Hadley中心资料,对1980—2015年间热带大西洋平均海温进行EOF分析。通过对其第一模态空间分布和时间系数图的分析,运用NCEP/NCAR再分析资料做出对应正相关年与负相关年的东亚地区500 hPa位势高度场距平与800 hPa年平均环流场图。通过2个高度正/负相关年环流场差值分析,研究热带大西洋地区海温异常与东亚地区上空环流场之间的关系。结果表明,热带大西洋海温异常对东亚大气环流影响存在一定因素,热带大西洋海温异常可能对东亚地区部分气旋移动产生影响,具体表现为热带大西洋海温变化影响着东亚区域季风推进。Based on the Hadley Center data,this paper makes EOF analysis of the mean SST in the tropical Atlantic Ocean from 1980to 2015.Through the analysis of the spatial distribution and time coefficient diagram of its first mode,the NCEP/NCAR reanalysis data are used to make the 500 hPa potential height field anomaly and 800 hPa annual average annular flow field diagrams in East Asia corresponding to the positive and negative correlation years.Through the analysis of the difference between the annular flow fields in the two highly positive/negative correlation years,the relationship between the SST anomaly in the tropical Atlantic region and the annular flow field over East Asia is studied.The results show that the influence of the tropical Atlantic SST anomaly on the atmospheric circulation in East Asia has certain factors,and the tropical Atlantic SST anomaly may have an impact on the movement of some cyclones in East Asia,specifically,the tropical Atlantic SST change affects the advance of the monsoon in East Asia.

关 键 词：热带大西洋海温异常 东亚大气环流 海气相互作用 

分 类 号：P461[天文地球—大气科学及气象学]