| 暴雨过程对副热带高压变动的影响 |
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| 引用本文： | 周兵,何金海,徐海明.暴雨过程对副热带高压变动的影响[J].应用气象学报,2004,15(4):394-406. |
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| 作者姓名： | 周兵 何金海 徐海明 |
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| 作者单位： | 1.国家气象中心, 北京 100081 |
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| 基金项目： | 国家自然科学基金 ( 4 0 2 75 0 1 4 )，重点项目 ( 4 0 1 3 5 0 2 0 )，中国科学院知识创新工程重要方向项目 (ZKCX2 SW 2 1 0 )共同资助 |
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| 摘 要： | 给出了长江中下游暴雨期间经圈环流观测事实, 指出在考虑垂直运动日变化之后, 可清晰地看到暴雨次级环流下沉支的存在。全型涡度方程对暴雨个例的计算发现, 非绝热加热中心西侧高空激发出负涡度, 东侧为正涡度;在低层则刚好相反。副高和南亚高压均会沿局地涡度变化的负中心方向移动。
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| 关 键 词： | 暴雨 副热带高压 全型涡度方程 非绝热加热 |
| 收稿时间： | 2002-04-16 |
| 修稿时间： | 2002年4月16日 |
Effect of Torrential Rain on Variability of Subtropical High |
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| Zhou Bing,He Jinhai,Xu Haiming.Effect of Torrential Rain on Variability of Subtropical High[J].Quarterly Journal of Applied Meteorology,2004,15(4):394-406. |
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| Authors: | Zhou Bing He Jinhai Xu Haiming |
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| Institution: | 1.National Meteorological Center , Beijing 1000812.Nanjing I nstitute of Meteorology , Nanjing 210044 |
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| Abstract: | Based on NCEP/NCAR data sets and dynamical diagnostic, the meridional circulation fact of torrential rain over the mid lower Yangtze reaches was presented with composite analysis. The downward flow of secondary circulation occurred obviously while deducting the day variety of perpendicular motion. With calculating complete form vorticity equations, the further results show that the negative vorticity is stimulated by diabatic heating over the high layer, which locates at west side of the heating center, and versus east side is positive vorticity. In the low layer there is opposite exactly. Finally, the analysis emphasizes that the subtropical high all will move along the local negative vorticity center for variety direction with South Asia high. |
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| Keywords: | Torrential rain Subtropical high Complete form vorticity equation Diabatic heating |
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