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《Chinese Journal of Atmospheric Sciences》 2009-03
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Difference of the Atmospheric Teleconnection Patterns between Winter and Summer over the Northern Hemisphere and Its Relation with the Air Temperature Fields

CHEN Fangli1,2 and LI Weibiao11 Department of Atmospheric Sciences/Research Center For Monsoon and Environment,Sun Yat-Sen University,Guangzhou 5102752 Huizhou Meteorological Bureau of Guangdong Province,Huizhou 516001  
The different features of the atmospheric teleconnection patterns between winter and summer over the Northern Hemisphere(NH) and their relations with the air temperature fields are studied using the 55 years NCEP/NCAR reanalysis data.It is found that there are obvious differences in the routes of the atmospheric teleconnection between winter and summer over the NH.The teleconnection route in winter exhibits meridional features while the teleconnection route is noticeably zonal in summer.Results also show that the deflection of teleconnection route is closely related to the zonal air temperature gradient.The teleconnection route deflects when the zonal air temperature gradient is zero,which may results in the difference of the teleconnection routes between winter and summer over the NH.
【Fund】: 国家自然科学基金资助重点项目40730951;; 国家自然科学基金联合基金项目U0733002;; 国家科技支撑计划项目2007BAC03A02
【CateGory Index】: P434
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