Solar-wind–magnetosphere energy influences the interannual variability of the northern-hemispheric winter climate  

作　　者：Shengping He Huijun Wang Fei Li Hui Li Chi Wang 

机构地区：[1]Geophysical Institute,University of Bergen and Bjerknes Center for Climate Research,Bergen 5007,Norway [2]Key Laboratory of Meteorological Disaster/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing 210044,China [3]Climate Change Research Center,Chinese Academy of Sciences,Beijing 100029,China [4]Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [5]Norwegian Institute for Air Research,Kjeller 2007,Norway [6]State Key Laboratory of Space Weather,National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《National Science Review》2020年第1期141-148,共8页国家科学评论（英文版）

基　　金：supported by the National Key R&D Program of China(2016YFA0600703);the National Natural Science Foundation of China(41875118,41505073 and 41605059)

摘　　要：Solar irradiance has been universally acknowledged to be dominant by quasi-decadal variability,which has been adopted frequently to investigate its effect on climate decadal variability.As one major terrestrial energy source,solar-wind energy flux into Earth’s magnetosphere(Ein)exhibits dramatic interannual variation,the effect of which on Earth’s climate,however,has not drawn much attention.Based on the Ein estimated by 3D magnetohydrodynamic simulations,we demonstrate a novelty that the annual mean Ein can explain up to 25%total interannual variance of the northern-hemispheric temperature in the subsequent boreal winter.The concurrent anomalous atmospheric circulation resembles the positive phase of Arctic Oscillation/North Atlantic Oscillation.The warm anomalies in the tropic stratopause and tropopause induced by increased solar-wind–magnetosphere energy persist into the subsequent winter.Due to the dominant change in the polar vortex and mid-latitude westerly in boreal winter,a‘top-down’propagation of the stationary planetary wave emerges in the Northern Hemisphere and further influences the atmospheric circulation and climate.Solar irradiance has been universally acknowledged to be dominant by quasi-decadal variability, which has been adopted frequently to investigate its effect on climate decadal variability. As one major terrestrial energy source, solar-wind energy flux into Earth’s magnetosphere(Ein) exhibits dramatic interannual variation, the effect of which on Earth’s climate, however, has not drawn much attention. Based on the Ein estimated by 3D magnetohydrodynamic simulations, we demonstrate a novelty that the annual mean Ein can explain up to 25% total interannual variance of the northern-hemispheric temperature in the subsequent boreal winter. The concurrent anomalous atmospheric circulation resembles the positive phase of Arctic Oscillation/North Atlantic Oscillation. The warm anomalies in the tropic stratopause and tropopause induced by increased solar-wind–magnetosphere energy persist into the subsequent winter.Due to the dominant change in the polar vortex and mid-latitude westerly in boreal winter, a ‘top-down’propagation of the stationary planetary wave emerges in the Northern Hemisphere and further influences the atmospheric circulation and climate.

关 键 词：solar wind winter climate INTERANNUAL variability STRATOSPHERE 

分 类 号：P461[天文地球—大气科学及气象学]