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| 大连地区主汛期多、少雨年同期大气环流场的差异 | |
| 引用本文： | 王玲玲,王谦谦,张黎红.大连地区主汛期多、少雨年同期大气环流场的差异[J].气象科学,2006,26(6):662-667. |
| 作者姓名： | 王玲玲 王谦谦 张黎红 |
| 作者单位： | 1. 南京信息工程大学大气科学系,南京,210044;大连市气象局,大连,116001 2. 南京信息工程大学大气科学系,南京,210044 3. 大连市气象局,大连,116001 |
| 摘 要： | 大连地区主汛期降水异常是该地区大气环流异常直接影响的结果,本文用1961~2000年各层大气环流场资料来分析对比多、少雨年同期大气环流的情况。揭示出大连地区主汛期多雨年和少雨年同期的海平面气压场、850 hPa大气环流场、500 hPa西风带槽脊和高度场都存在显著差异。多雨年较少雨年该地区低层的辐合上升运动加强,850 hPa盛行西南气流,水汽输送旺盛。同时,500 hPa西风带的槽脊波动加深,高空西风急流增强。 |
| 关 键 词： | 大气环流 多少雨年 大连地区 主汛期 显著差异 |
| 收稿时间： | 2005-10-26 |
| 修稿时间： | 2006-02-14 |
DIFFERENCES OF ATMPSPHERIC CIRCULATION IN WET AND DRY YEARSIN DALIAN AREA IN MAIN RAINING SEASONS |
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| Wang Lingling,Wang Qianqian and Zhang Lihong.DIFFERENCES OF ATMPSPHERIC CIRCULATION IN WET AND DRY YEARSIN DALIAN AREA IN MAIN RAINING SEASONS[J].Scientia Meteorologica Sinica,2006,26(6):662-667. | |
| Authors: | Wang Lingling Wang Qianqian and Zhang Lihong |
| Abstract: | Precipitation anomalies in Dalian area in main raining seasons are the direct result of difference in atmospheric circulation, the atmospheric circulation patterns in wet and dry years of Dalian during 1961-2000 are contrastively analyzed in this paper based on the data of atmospheric circulation fields at different levels. It discovers that there are significant differences in atmospheric circulation in wet and dry years in Dalian area in main raining seasons. In wet years ,the converging and ascending actions are stronger,as well as the south-west air current in low-level atmosphere. In addition,the waves of trough and ridge become deeper and the west current become stronger in high-level atmosphere. |
| Keywords: | Atmospheric circulation Wet and dry years Dalian area Main raining seasons Significant differences |
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