亞洲熱帶夏季風(fēng)指數(shù)與中國南方降水的關(guān)系

doi:10.12306/2020jms.0017

首頁 > 過刊瀏覽>2021年第41卷第2期 >228-236. DOI:10.12306/2020jms.0017

亞洲熱帶夏季風(fēng)指數(shù)與中國南方降水的關(guān)系
DOI:
                        10.12306/2020jms.0017
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡介:
通訊作者:
中圖分類號(hào):P426.61
基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目(41565002;41365007);中國氣象科學(xué)研究院基本科研業(yè)務(wù)費(fèi)專項(xiàng)(2016Z002)

The relationship between Asian tropical summer monsoon index and precipitation in southern China

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:

利用1979—2013年夏季全球2.5°×2.5°逐日環(huán)流資料和中國氣象站點(diǎn)降水觀測(cè)資料,采用動(dòng)力學(xué)因子(西南風(fēng))與熱力學(xué)因子(Radiation Longwave covting, OLR)相結(jié)合定義了標(biāo)準(zhǔn)化的亞洲熱帶夏季風(fēng)指數(shù)(Tropical Summer Monsoon Index, TSMI)。結(jié)果表明,該指數(shù)能夠很好地描述亞洲熱帶夏季風(fēng)的年際變化和準(zhǔn)4 a變化特征,并能夠指示中國南方夏季降水的異常變化和東亞大氣環(huán)流特征。強(qiáng)(弱)亞洲熱帶夏季風(fēng)年,印度夏季風(fēng)槽和南海夏季風(fēng)槽加強(qiáng)加深(減弱),孟加拉灣海域一致西南風(fēng)(東風(fēng))異常,越赤道急流向北輸送偏強(qiáng)(偏弱),南海季風(fēng)槽位置偏西(東),南海區(qū)域一致西南風(fēng)異常,西太平洋副熱帶高壓和南亞高壓緯向位置分離(重疊),低層氣流在長江流域輻散(輻合),華南地區(qū)輻合(輻散),長江中下游流域出現(xiàn)異常下沉(上升)運(yùn)動(dòng),造成長江流域降水偏少(偏多),華南地區(qū)降水比常年偏多(偏少)。

Abstract:

Based on the NCEP/NCAR global reanalysis daily data and precipitation data from Chinese meteorological stations during 1979 to 2013, a new Asian Tropical Summer Monsoon Index(TSMI) was defined by combining the dynamic factor (southwest wind) and the thermodynamic factor (OLR). Results show that the index can well describe the inter-annual variation of the summer monsoon, as well as the abnormal change of summer precipitation in southern China and the characteristics of eastern Asian atmospheric circulation. In stronger (weaker) monsoon years, the Indian summer monsoon trough and the South China Sea summer monsoon trough deepen (weaken), so the southwesterly (easterly) wind anomaly control the bay of Bengal area, meanwhile, cross-equatorial flow moves north strongly(weakly), the South China Sea monsoon trough closes to the west Pacific (Indo-China Peninsula), and the westerly anomaly is in the south part of the South China Sea area, while the easterly anomaly is in the north part. Another characteristics of the circulation abnormal are the separated (overlapping) pattern between the ridge of West Pacific subtropical high and the South Asia high. These abnormal makes low-level wind diverge (converge) in Yangtze Valley, converge (diverge) in southern China. So there exist clear downdraft motion (ascending motion) over the middle and lower reaches of the Yangtze River, which leads to less (more) in middle and lower reaches of the Yangtze River and is more (less)precipitationin southern China.

參考文獻(xiàn)

相似文獻(xiàn)

引證文獻(xiàn)

引用本文

任菊章,琚建華,米瑞芝,段長春,陶云.亞洲熱帶夏季風(fēng)指數(shù)與中國南方降水的關(guān)系.氣象科學(xué),2021,41(2):228-236 REN Juzhang, JU Jianhua, MI Ruizhi, DUAN Changchun, TAO Yun. The relationship between Asian tropical summer monsoon index and precipitation in southern China. Journal of the Meteorological Sciences,2021,41(2):228-236

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:2019-08-06
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

<span id="bh9ug"></span>

<span id="bh9ug"></span>

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