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Connections Between a Late Summer Snowstorm Over the Southwestern Tibetan Plateau and a Concurrent Indian Monsoon Low-Pressure System
Dong, WH (Dong, Wenhao)1,2; Lin, YL (Lin, Yanluan)1,2; Wright, JS (Wright, Jonathon S.)1,2; Xie, YY (Xie, Yuanyu)1,2; Xu, FH (Xu, Fanghua)1,2; Yang, K (Yang, Kun)1,2; Li, X (Li, Xin)3,4; Tian, LD (Tian, Lide)3,4; Zhao, X (Zhao, Xi)1,2; Cao, DB (Cao, Dianbin)1,2
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES  
2018-12-27
Volume123Issue:24Pages:13676-13691
DOI10.1029/2018JD029710
Abstract

Snowstorms cause more damage to the livelihoods and livestock of more than 2 million herders (80% of the total population) on the Tibetan Plateau than any other natural disaster. In this study, we investigate an extreme snowstorm over the southwestern Tibetan Plateau (SWTP) that occurred on 18-21 September 2008. We explore sources and transport pathways of moisture to this storm using multiple data sets and a series of regional model simulations. The results show that this snowstorm results from dynamical coupling between an upper-level trough and a concurrent low-pressure system over northern India. This tropical-extratropical interaction provides the dynamical mechanism for the snowstorm to occur: the upper level trough favors southward cold advection upstream of the SWTP while the low-pressure system over northern India provides an abundant supply of moisture. Model-based sensitivity tests indicate that large amounts of moisture are transported over the SWTP via both the up-and-over and upslope transport pathways. Our findings corroborate that low-pressure systems over northern India can deliver abundant moisture into the SWTP. The coupling of this abundant supply of moisture with an upper-level trough further leads to the occurrence of an early snow disaster in this case, aggravating already harsh conditions and causing severe damage. Improved understanding of the interactions between these two types of synoptic systems and the climatic conditions that influence their occurrence would aid the development of effective strategies for climate change adaptation and sustainable husbandry, as well as the mitigation and relief of future snow disasters in this region.

Subject Area地理学
WOS IDWOS:000455876300004
Language英语
Indexed BySCIE
KeywordPastoral Areas Snow Cover Precipitation Variability Circulation Seasonality Reanalysis Rainfall Events China
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国际
ISSN2169-897X
Department环境变化与地表过程重点实验室
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8465
Collection图书馆
Corresponding AuthorDong, WH (Dong, Wenhao)
Affiliation1.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China;
2.Tsinghua Univ, JCGCS, Beijing, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China;
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Dong, WH ,Lin, YL ,Wright, JS ,et al. Connections Between a Late Summer Snowstorm Over the Southwestern Tibetan Plateau and a Concurrent Indian Monsoon Low-Pressure System[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES  ,2018,123(24):13676-13691.
APA Dong, WH .,Lin, YL .,Wright, JS .,Xie, YY .,Xu, FH .,...&Cao, DB .(2018).Connections Between a Late Summer Snowstorm Over the Southwestern Tibetan Plateau and a Concurrent Indian Monsoon Low-Pressure System.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES  ,123(24),13676-13691.
MLA Dong, WH ,et al."Connections Between a Late Summer Snowstorm Over the Southwestern Tibetan Plateau and a Concurrent Indian Monsoon Low-Pressure System".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES   123.24(2018):13676-13691.
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