安徽农业科学2012，Vol.40Issue(3)：1762-1767,1830,7.
夏季对流层上空东风带扰动的结构演变特征及其影响西太副高短期东退的机制分析
The Structure and Variety of the Easterlies Vortex in the Upper Troposphere and the Analysis of the Abnormal Retreat of the Subtropical Anticyclone during Sunmmer
孟伟 1张琴1
作者信息
- 1. 山东省东营市气象局,山东东营257091
- 折叠
摘要
Abstract
The relationship of the easterlies vortex (EV) and the abnormal retreat of the subtropical anticyclone over the Western Pacific (WP-SA) was analyzed. The statistics of ten years showed that this phenomena is frequency. The composite analysis indicated that the EV is deep in vertical and warmer in the upper-troposphere; Vertical movement and meridional wind of EV depends on the environment. When the EV and WV arrives the same longitude,the cooling zones between north and south are linked together,temperature gradient manifested by warm-cold-warm in zonal,which results the change of meridional wind is the cause of WPSA' s retreatment. After the discuss,the studies indicated that temperature changement between north and south generated the temperature gradient; The change in the west of EV depends on temperature advection term and diabatic-heating term while the change in the east of EV depends on diabatic-heating term and remainder term.关键词
西太平洋副热带高压/东风带扰动/机制Key words
Subtropical anticyclone over the western Pacific/ Easterlies vortex/ Mechanism分类
天文与地球科学引用本文复制引用
孟伟,张琴..夏季对流层上空东风带扰动的结构演变特征及其影响西太副高短期东退的机制分析[J].安徽农业科学,2012,40(3):1762-1767,1830,7.
