浙東地形對(duì)臺(tái)風(fēng)“利奇馬”極端降水的影響分析

doi:10.12306/2019jms.0071

首頁(yè) > 過(guò)刊瀏覽>2021年第41卷第2期 >162-171. DOI:10.12306/2019jms.0071

浙東地形對(duì)臺(tái)風(fēng)“利奇馬”極端降水的影響分析
DOI:
                        10.12306/2019jms.0071
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡(jiǎn)介:
通訊作者:
中圖分類號(hào):P463.21
基金項(xiàng)目:臺(tái)州市科技局資金補(bǔ)助項(xiàng)目(XM20190489);臺(tái)州市氣象局科技計(jì)劃重點(diǎn)項(xiàng)目(TZ2019ZD01);浙江省氣象局預(yù)報(bào)員專項(xiàng)(2019Y13Y14)

Analysis of the effects of the topography of eastern Zhejiang on the extreme precipitation of typhoon “Lekima”

Author:

Affiliation:

Fund Project:

摘要

圖/表

訪問(wèn)統(tǒng)計(jì)

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

資源附件

文章評(píng)論

摘要:

利用自動(dòng)站實(shí)時(shí)降水資料、NCEP再分析資料和多普勒雷達(dá)資料,結(jié)合中尺度數(shù)值模式WRF對(duì)臺(tái)風(fēng)"利奇馬"在浙東地區(qū)產(chǎn)生的極端降水過(guò)程進(jìn)行分析,重點(diǎn)研究了浙東地形對(duì)極端降水的影響。結(jié)果表明,"利奇馬"影響期間,浙東強(qiáng)降水過(guò)程出現(xiàn)2個(gè)雨量峰值,依次由臺(tái)風(fēng)外層螺旋云帶和臺(tái)風(fēng)中心附近的多個(gè)中尺度對(duì)流云團(tuán)持續(xù)影響所造成,浙東地形對(duì)這一系列對(duì)流云團(tuán)有明顯的加強(qiáng)作用。浙東地區(qū)西部山脈對(duì)"利奇馬"有阻滯和輻合抬升兩方面作用,前者通過(guò)地形阻擋拖曳,延長(zhǎng)強(qiáng)降水時(shí)長(zhǎng),后者通過(guò)山前顯著的動(dòng)力抬升作用和水汽輻合加強(qiáng)造成降水增幅。根據(jù)估算可知,括蒼山脈在強(qiáng)降水階段對(duì)暴雨的增幅可達(dá)11 mm·h^-1,接近此時(shí)段內(nèi)總雨量的2.5成。通過(guò)敏感性試驗(yàn)降低地形高度后,浙東地區(qū)輻合及上升運(yùn)動(dòng)減弱,雨量也明顯減少,進(jìn)一步驗(yàn)證了浙東地形是造成此次極端降水事件的重要原因。

Abstract:

Combined with the mesoscale numerical model WRF, the automatic station precipitation data, NCEP reanalysis data and Doppler radar data, were used to analyze the extreme precipitation process in eastern Zhejiang of typhoon "Lekima". Moreover, the effects of topographyon the extreme precipitation in eastern Zhejiang were mainly studied. Results show that two rainfall peaks occur during the strong precipitation period of "Lekima" in eastern Zhejiang, which are caused by the continuous influence of several mesoscale convective clouds in the outer spiral cloud belt and the neartyphoon center. The topography of eastern Zhejiang has a significant strengthening effect on the series of convective clouds. The western mountain in eastern Zhejiang has two functions of blockage and convergence uplifting. The former in extends the duration of strong precipitation dragged by terrain, while the latter strengthens the precipitation through the remarkable power uplift and water-vapor convergence in front of the mountain. According to the estimation, the increasing of precipitation of Kuocangshan Mountains during the strong precipitation period can reach to 11 mm·h^-1, close to 25% of the total rainfall during this period. In addition, after reducing the terrain height by sensitivity experiments, the convergence and uplifting motion in eastern Zhejiang region weakens, and the rainfall is also significantly reduced, which further verifies that the topography of eastern Zhejiang is an important factor of this extreme precipitation event.

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

王凱,齊鐸,高麗,翁之梅.浙東地形對(duì)臺(tái)風(fēng)“利奇馬”極端降水的影響分析.氣象科學(xué),2021,41(2):162-171 WANG Kai, QI Duo, GAO Li, WENG Zhimei. Analysis of the effects of the topography of eastern Zhejiang on the extreme precipitation of typhoon “Lekima”. Journal of the Meteorological Sciences,2021,41(2):162-171

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:2019-09-20
最后修改日期:2019-11-25
錄用日期:
在線發(fā)布日期: 2021-05-14
出版日期:

文章二維碼

您是第位訪問(wèn)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