臺風(fēng)"燦都"造成云南強(qiáng)降水過程的水汽螺旋度診斷分析

doi:10.3969/2012jms.0030

首頁 > 過刊瀏覽>2012年第32卷第3期 >339-346. DOI:10.3969/2012jms.0030

臺風(fēng)"燦都"造成云南強(qiáng)降水過程的水汽螺旋度診斷分析
DOI:
                        10.3969/2012jms.0030
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡介:
通訊作者:
中圖分類號:
基金項目:

Diagnostic analysis of moisture helicity for the heavy rainfall processes in Yunnan caused by typhoon"Chanthu"

Author:

Affiliation:

Fund Project:

摘要

圖/表

訪問統(tǒng)計

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

資源附件

文章評論

摘要:

利用地面加密觀測、Micaps資料和NCEP1°×1° 再分析資料對1003號"燦都"臺風(fēng)造成云南暴雨進(jìn)行診斷分析。結(jié)果表明:臺風(fēng)低壓為高溫高濕且具有強(qiáng)對流不穩(wěn)定的深厚系統(tǒng)。進(jìn)入云南后除了自身攜帶的大量水汽和能量外,先后有副熱帶高壓西側(cè)強(qiáng)盛偏南急流和孟加拉灣西南氣流卷入,使得臺風(fēng)低壓在云南持久不衰,并產(chǎn)生全省性強(qiáng)降水。診斷量"水汽螺旋度"對暴雨落區(qū)和強(qiáng)度有較好的對應(yīng)關(guān)系,強(qiáng)降水多發(fā)生在水汽螺旋度正值中心的偏南側(cè)。"水汽螺旋度"隨時間變化的兩個影響因子"螺旋度通量散度"和"濕螺旋度散度"對強(qiáng)降水的落區(qū)和強(qiáng)度也有較好的指示作用。若是分別對兩個因子進(jìn)行診斷,再綜合分析環(huán)流形勢,將能達(dá)到更好的強(qiáng)降水預(yù)報效果。

Abstract:

Based on the intensive observations data, Micaps data and reanalysis data of NCEP (1°×1°,4 times a day), the heavy rainfall caused by No.1003 typhoon "Chanthu" have been diagnosed. The result shows that the typhoon was deep depression system with high temperature and humidity and strong convective instability. Typhoon depression, after entered into Yunnan, besides carrying a large quantity of vapor and energy, was involved by south jet flow on the western border of western Pacific subtropical high and southwest flow from the Bay of Bengal successively, so that it could last for a long time and lead to Yunnan heavy rainfall. The moisture helicity has better indicating effect for both the location and intensity of heavy rainfall, and in south of its positive center areas heavy rainfall often takes place. There are two influencing factors of the moisture helicity which change with time:helicity flux divergence and the humid helicity divergence, they have good correlation with precipitation location and intensity. The forecast result will be better if these two factors are diagnosed separately and combined with circulation pattern analysis.

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

周泓,金少華,尤紅.臺風(fēng)"燦都"造成云南強(qiáng)降水過程的水汽螺旋度診斷分析.氣象科學(xué),2012,32(3):339-346 ZHOU Hong, JIN Shaohua, YOU Hong. Diagnostic analysis of moisture helicity for the heavy rainfall processes in Yunnan caused by typhoon"Chanthu". Journal of the Meteorological Sciences,2012,32(3):339-346

復(fù)制

文章指標(biāo)

點(diǎn)擊次數(shù):
下載次數(shù):
HTML閱讀次數(shù):
引用次數(shù):

歷史

收稿日期:2011-01-20
最后修改日期:2011-06-13
錄用日期:
在線發(fā)布日期: 2012-06-15
出版日期:

文章二維碼

您是第位訪問者
氣象科學(xué) ® 2026 版權(quán)所有
技術(shù)支持：北京勤云科技發(fā)展有限公司

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒 激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说