Study on the Evolution of a Northeast China Cold Vortex during the Spring of 2010  

作　　者：FU Shen-Ming SUN Jian-Hua QI Lin-Lin 

机构地区：[1]International Center for Climate and Environment Sciences (ICCES), Institute of Atmospheric Physics, Chinese Academy of Sciences [2]Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences [3]Institute of Aeronautical Meteorology and Chemical Defense, Equipment Academy of Air Force

出　　处：《Atmospheric and Oceanic Science Letters》2014年第2期149-156,共8页大气和海洋科学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 41205027);the National Key Basic Research Program of China (Grant No. 2012CB 417201)

摘　　要：Based on the final analysis data with horizontal resolution of 1°× 1°(four times a day) from the National Centers for Environmental Prediction(NCEP), a typical Northeast China cold vortex(NCCV) during the spring of 2010 was examined with the quasi-Lagrange- form eddy flux circulation(EFC) budget equation. Results indicated that the mechanisms that account for the development, maintenance, and attenuation of the cyclone varied with levels and stages. Displacement of the cyclone and transports by background environmental circulations dominated the variation of the cyclone in the middle and upper levels, whereas displacement and divergence associated with the cyclone dominated the evolution of the NCCV in the middle and lower levels. Moreover, interactions between the NCCV and other subsynoptic weather systems were important for the development of the cyclone, and the pattern of background environmental circulations was also important for the evolution of the NCCV, since the cyclone enhanced(weakened) as it moved from areas of low(high) vorticity to high(low) ones.Based on the final analysis data with horizontal resolution of 1°× 1°（four times a day） from the National Centers for Environmental Prediction（NCEP）, a typical Northeast China cold vortex（NCCV） during the spring of 2010 was examined with the quasi-Lagrange- form eddy flux circulation（EFC） budget equation. Results indicated that the mechanisms that account for the development, maintenance, and attenuation of the cyclone varied with levels and stages. Displacement of the cyclone and transports by background environmental circulations dominated the variation of the cyclone in the middle and upper levels, whereas displacement and divergence associated with the cyclone dominated the evolution of the NCCV in the middle and lower levels. Moreover, interactions between the NCCV and other subsynoptic weather systems were important for the development of the cyclone, and the pattern of background environmental circulations was also important for the evolution of the NCCV, since the cyclone enhanced（weakened） as it moved from areas of low（high） vorticity to high（low） ones.

关 键 词：Northeast China cold vortex quasi-Lagrange-form eddy flux circulation budget 

分 类 号：P445[天文地球—大气科学及气象学]