主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2019, Vol. 35 ›› Issue (3): 60-67.doi: 10.3969/j.issn.1673-503X.2019.03.008

• 论文 • 上一篇    下一篇

西太平洋暖池海温和山西盛夏降水关系研究

张冬峰1, 王永光2, 张国宏1   

  1. 1. 山西省气候中心, 山西 太原 030006;
    2. 中国气象局国家气候中心, 北京 100081
  • 收稿日期:2018-01-26 修回日期:2018-05-09 出版日期:2019-06-30 发布日期:2019-06-28
  • 通讯作者: 王永光,男,正研级高级工程师,E-mail:ygwang@cma.gov.cn。 E-mail:ygwang@cma.gov.cn
  • 作者简介:张冬峰,女,1969年生,正研级高级工程师,主要从事气候和气候变化研究,E-mail:minczdf@hotmail.com。
  • 基金资助:
    国家重点研发计划项目(2017YFA0603701)、山西省气象局重点课题(SXKZDQH20185103)和中国气象局核心业务发展专项(CMAHX20160503)共同资助。

Impact of sea surface temperatures in Western Pacific warm pool on precipitation in Shanxi province in mid-summer season

ZHANG Dong-feng1, WANG Yong-guang2, ZHANG Guo-hong1   

  1. 1. Shanxi Climate Center, Taiyuan 030006, China;
    2. National Climate Center, China Meteorological Administration, Beijing 100081, China
  • Received:2018-01-26 Revised:2018-05-09 Online:2019-06-30 Published:2019-06-28

摘要: 利用1961-2016年山西盛夏(7-8月)平均降水和同期NOAA重构海温资料,分析了山西盛夏降水分别与赤道中东太平洋海温和西太平洋暖池海温相关性的变化。结果表明:山西盛夏降水和赤道中东太平洋海温之间呈现稳定的显著负相关;和西太平洋暖池海温呈现正相关,并在20世纪70年代末到80年代初之后相关性加强,通过了0.05显著性检验。进一步分析表明,这种西太平洋暖池海温对20世纪80年代以来山西盛夏降水指示意义加强的事实,主要体现在赤道中东太平洋海温偏冷的背景下。西太平洋暖池海温异常通过影响与山西盛夏降水密切相关的大气环流、季风槽位置和东亚夏季风,导致山西盛夏降水异常。盛夏赤道中东太平洋海温偏冷时,西太平洋暖池海温偏暖(冷),通过遥相关引起中高纬度大气欧亚-太平洋型遥相关(EUP)和负太平洋-日本(PJ)波列,通过影响季风槽位置偏西偏北(偏东偏南),引起西太平洋副热带高压偏北(南)和季风指数偏小(大),导致山西盛夏降水偏多(少)。

关键词: 盛夏降水, 海温, 西太平洋暖池, 夏季风

Abstract: Correlations between precipitation in Shanxi province and the sea surface temperature in the Central and Eastern Equatorial Pacific and the Western Pacific warm pool during mid-summer season (July and August) from 1961 to 2016 were analyzes using precipitation observational data and National Oceanic and Atmospheric Administration (NOAA) extended reconstructed sea surface temperature (SST) data.The results showed that precipitation in Shanxi province has a significant negative correlation with the SST in the Central and Eastern Equatorial Pacific and a positive correlation with the SST in Western Pacific warm pool;such a positive correlation enhances since the late 1970s and the early 1980s with a significance level exceeding 0.05 and is associated with the negative SST anomaly in the Central and Eastern Equatorial Pacific.The SST anomaly in Western Pacific warm pool can influence the atmospheric circulation,positions of monsoon trough and the East Asian monsoon,resulting in the anomaly precipitation in Shanxi province.When the SST anomaly in the Central and Eastern Equatorial Pacific is negative,the positive (negative) SST anomaly in Western Pacific warm pool can cause the Europe-Asian-Pacific (EAP) teleconnection pattern and negative Pacific-Japan (PJ) waves.Subsequently,this makes the monsoon trough move westward and northward (eastward and southward),the Western Pacific Subtropical High move northward (southward),and the monsoon index become smaller (larger),leading to more (less) precipitation in Shanxi province during the mid-summer season.

Key words: Precipitation in mid-summer season, Sea surface temperature, Western Pacific warm pool, Summer monsoon

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