2021年"4·30"南通地區(qū)大風(fēng)數(shù)值模擬與形成機(jī)理分析

doi:10.12306/2022jms.0022

首頁(yè) > 過刊瀏覽>2025年第45卷第1期 >82-94. DOI:10.12306/2022jms.0022

2021年"4·30"南通地區(qū)大風(fēng)數(shù)值模擬與形成機(jī)理分析
DOI:
                        10.12306/2022jms.0022
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡(jiǎn)介:
通訊作者:
中圖分類號(hào):P458.123
基金項(xiàng)目:國(guó)家自然科學(xué)基金資助項(xiàng)目(42175003)

The formation mechanism and numerical simulation of the "4.30" gale in Nantong in 2021

Author:

Affiliation:

Fund Project:

摘要

圖/表

訪問統(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:

2021年4月30日江蘇省南通地區(qū)出現(xiàn)伴隨颮線過程的冰雹、大風(fēng)等強(qiáng)對(duì)流天氣。本文利用WRF-ARW模式進(jìn)行敏感性數(shù)值試驗(yàn),以此探究環(huán)境背景場(chǎng)對(duì)對(duì)流系統(tǒng)生消演變過程的可能影響途徑。結(jié)果表明,該大風(fēng)天氣與颮線系統(tǒng)的結(jié)構(gòu)、強(qiáng)度密切相關(guān)。颮線冷池強(qiáng)度會(huì)影響大風(fēng)的生成和強(qiáng)度,相應(yīng)的動(dòng)力和熱力共同作用影響下沉氣流的強(qiáng)度,進(jìn)而影響地面風(fēng)速。增加中層水汽會(huì)減弱冷池強(qiáng)度和范圍,颮線強(qiáng)度減弱,移速變慢;關(guān)閉降水蒸發(fā)作用,產(chǎn)生的對(duì)流系統(tǒng)沒有冷池,結(jié)構(gòu)與颮線不同。冷池的減弱或消失使得下沉氣流和低層輻散減弱,中層動(dòng)量無法下傳,進(jìn)而導(dǎo)致地面風(fēng)速減弱。

Abstract:

A severe convective weather with hail and strong winds accompanied by the squall line process occurred in Nantong, Jiangsu Province on 30 April 2021. The WRF-ARW model was used to conduct sensitivity numerical experiments to investigate how the environmental field influences the evolution of the convective system. Results indicate that the strong winds weather was closely related to the structure and intensity of the squall line system. The intensity of the cold pool in the squall line affected the formation and intensity of the strong winds. The corresponding dynamic and thermal forces combined affect the intensity of the downdraft, thus affecting the surface wind speed. The intensity and range of the cold pool were weakened by the increase of middle-level water vapor, the squall line intensity was weakened and the moving speed was slow. When the raindrop evaporation was turned off, the resulting convective system had no cold pool, and its structure was different from the squall line. The weakening or disappearance of the cold pool weakens the downdraft, weakens the divergence in the lower layer, and the momentum in the middle layer cannot be transmitted downward, leading to the weakening of the surface wind speed.

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

張?jiān)?葛旭陽(yáng).2021年"4·30"南通地區(qū)大風(fēng)數(shù)值模擬與形成機(jī)理分析.氣象科學(xué),2025,45(1):82-94 ZHANG Yue, GE Xuyang. The formation mechanism and numerical simulation of the "4.30" gale in Nantong in 2021. Journal of the Meteorological Sciences,2025,45(1):82-94

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:2021-12-05
最后修改日期:2022-03-30
錄用日期:
在線發(fā)布日期: 2025-03-08
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