福建入夏早晚異常的風(fēng)場(chǎng)特征分析

doi:10.3969/2012jms.00**

首頁 > 過刊瀏覽>2007年第卷第1期 >49-56. DOI:10.3969/2012jms.00**

福建入夏早晚異常的風(fēng)場(chǎng)特征分析
DOI:
                        10.3969/2012jms.00**
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡(jiǎn)介:
通訊作者:
中圖分類號(hào):P462
基金項(xiàng)目:福建省自然科學(xué)基金

AN ANALYSIS OF THE WIND FIELD FEATURES RELATED TO THE ANOMALOUS BEGINNING TIME OF SUMMER IN FUJIAN

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:

本文以850 hPa、200 hPa月平均風(fēng)場(chǎng)和西太平洋副熱帶高壓脊線北抬至25°N日期資料及福建省25個(gè)代表站(縣)5—7月的降水資料為基本分析素材。首先標(biāo)定福建入夏異常的標(biāo)準(zhǔn)與年例,其次揭示850 hPa2、00 hPa 6月風(fēng)場(chǎng)與異常年例的基本特征,進(jìn)而探討了對(duì)福建入夏早晚的影響關(guān)系。結(jié)果表明:在低層索馬里-阿拉伯海區(qū)的越赤道氣流強(qiáng)勁,南海至東亞低緯區(qū)域西南風(fēng)偏大,西太平洋區(qū)域低緯度地區(qū)南風(fēng)減弱、東風(fēng)強(qiáng)勁,且東西風(fēng)交匯區(qū)偏西;而在高層輻合區(qū)東風(fēng)范圍偏大,索馬里-阿拉伯海區(qū)的區(qū)域東風(fēng)風(fēng)速強(qiáng)勁,青藏高原南側(cè)和副高主體季節(jié)性位移的關(guān)鍵區(qū)以吹東風(fēng)為主,東亞區(qū)域經(jīng)向度小,位于青藏高原至我國(guó)東部區(qū)域范圍內(nèi),形成一逆時(shí)針“距平”風(fēng)環(huán)流;在此高低層風(fēng)場(chǎng)特征的匹配下,有利于福建提早進(jìn)入夏季;反之亦然。

Abstract:

Based on 850 hPa and 200 hPa monthly mean wind,the date of the subtropical high ridge moving northward to 25 N and the precipitation observed from May to July by 25 representative weather stations in Fujian, the criteria of the anomalous beginning time of summer in Fujian were defined, the general characteristics of 850 hPa and 200 hPa wind fields in June of the abnormal years and their relation to the beginning time of summer in Fujian were analyzed and discussed. The results are as follows:In the year when the beginning of summer in Fujian is abnormally early (late), in the lower troposphere, the cross-equatorial flow over Somalia and Arabian Sea is stronger (weaker) than the normal, the southwesterly wind in the region from the South China Sea to the low latitudes of East Asia is larger (smaller), and in the low latitudes of the West Pacific, the southerly wind decreases (increases) while the easterly wind is stronger (weaker), and the easterly and westerly wind meets in the west (east) to their normal convergence region; in the upper troposphere, the easterly (westerly) wind bound in the convergence area enlarges (shrinks), the easterly (westerly) wind prevails on the south side of the Qinghai-Xizang Plateau and over the key area for the seasonal shift of the subtropical high, the easterly wind strengthens (weaken) over Somalia-Arabian Sea region, the circulation meridionality is large (small) over East Asia, and the southerly wind over the Qinghai-Xizang Plateau and the northerly wind in East China decreases (increases), that forms an anticlockwise (clockwise) circulation of wind anomaly over the region from the Qinghai-Xizang Plateau to East China. Such collocation of wind fields in the lower and upper levels helps the main body of the subtropical high move northward to 25 N earlier (later). As a result, the rainfall in June over Fujian tends to be less (more) than the normal and summer comes ahead (delays).

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

許金鏡,溫珍治,林新彬.福建入夏早晚異常的風(fēng)場(chǎng)特征分析.氣象科學(xué),2007,(1):49-56 Xu Jinjing, Wen Zhenzhi, Lin Xinbin. AN ANALYSIS OF THE WIND FIELD FEATURES RELATED TO THE ANOMALOUS BEGINNING TIME OF SUMMER IN FUJIAN. Journal of the Meteorological Sciences,2007,(1):49-56

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:2005-08-05
最后修改日期:
錄用日期:
在線發(fā)布日期:
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