气象2011，Vol.37Issue(8)：929-935,7.
2010年西北太平洋热带气旋活动特征及成因的初步分析
Analysis of Features and Causation for Tropical Cyclone Activities over the Western North Pacific in 2010
摘要
Abstract
Characteristics and causation for tropical cyclone（TO activities over the Western North Pacific （WNP） and the South China Sea（SCS） in 2010 were analyzed by using the data of TCs,reanalysis data of NCEP/NCAR in this paper.TC activities are characterized by（1） forming the least,and the highest percentages of landing,（2） concentrated and westward genesis,（3） higher proportion of strong TCs and short life cycle TCs,（4） the later for the first TC and last TC,and（5） TC landing fewer in July—August and more than normal in September,5 of 7 TCs landing on Fujian.The causes were studied and the results were listed as follows.Firstly,the warm mode in the East Indian Ocean in 2010 was one of the key extra forcing factors resulting in the least TC genesis in WNP and SCS in 2010,especially the lag response of extratropical atmosphere to El Nino.Secondly,the atmospheric circulation abnormity was the key reasons. It showed the combined impacts of multi-factors including the larger and stronger Northwest Pacific subtropical high extending abnormally west,the abnormally westward monsoon trough and large vertical shear anomalies.关键词
热带气旋/活动特征/成因分析/大气环流Key words
tropical cyclones（TCs）/features/causation analysis/atmospheric circulation分类
天文与地球科学引用本文复制引用
孙冷..2010年西北太平洋热带气旋活动特征及成因的初步分析[J].气象,2011,37(8):929-935,7.基金项目
公益性行业（气象）科研专项 （）
科技部科技支撑项目（2009BAC51B02）共同资助 （）
