大气科学学报2023，Vol.46Issue(6)：876-883,8.DOI:10.13878/j.cnki.dqkxxb.20210818001
春季东大西洋/西俄罗斯遥相关型异常与我国气温异常的联系
Variation characteristics of spring East Atlantic/West Russia teleconnection pattern and its relationship with temperature anomalies in China
摘要
Abstract
Based on the observed monthly temperature data of 160 stations in China and NCEP-DOE reanalysis(R-2)data from 1979 to 2017,the variation characteristics of spring East Atlantic/West Russia(EATL/WRUS)teleconnection pattern and its relationship with spring temperature anomalies in China are investigated in this pa-per.Results show that the positive(negative)phase of spring EATL/WRUS pattern presents a"+-+"("-+-")zonal wave train over 500 hPa from North Atlantic to middle and high latitudes of Eurasia.The main active cen-ters of the wave train are located in West Europe,near the Urals and south to the Lake Baikal,respectively.In the vertical direction,spring EATL/WRUS pattern is featured by a significant quasi-barotropic structure.There is a significant positive correlation between spring EATL/WRUS pattern anomaly and the spring temperature anoma-lies in Northwest China.During the positive(negative)phase years of spring EATL/WRUS pattern,there are negative(positive)anomaly of geopotential height and anomalous cyclonic(anticyclonic)circulation near the Urals,as well as positive(negative)anomaly of geopotential height and anomalous anticyclonic(cyclonic)cir-culation south to the Lake Baikal,which weakens(strengthens)the cold air affecting Northwest China,leading to an increase(decrease)of spring temperature in Northwest China.关键词
东大西洋/西俄罗斯型/大气遥相关/气温异常/环流异常/波活动通量Key words
East Atlantic/West Russia pattern/atmospheric teleconnection/temperature anomaly/circulation a-nomaly/wave activity flux引用本文复制引用
李忠贤,黄源源,王健治..春季东大西洋/西俄罗斯遥相关型异常与我国气温异常的联系[J].大气科学学报,2023,46(6):876-883,8.基金项目
国家自然科学基金资助项目(42175034) （42175034）
