Connections Between a Late Summer Snowstorm Over the Southwestern Tibetan Plateau and a Concurrent Indian Monsoon Low-Pressure System | |
Cao, DB (Cao, Dianbin)1,2; 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 | |
刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
2018-12-27 | |
卷号 | 123期号:24页码:13676-13691 |
关键词 | Pastoral Areas Snow Cover Precipitation Variability Circulation Seasonality Reanalysis Rainfall Events China |
ISSN号 | 2169-897X |
DOI | 10.1029/2018JD029710 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 地理学 |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000455876300004 |
内容类型 | 期刊论文 |
源URL | [http://ir.itpcas.ac.cn/handle/131C11/8465] |
专题 | 青藏高原研究所_图书馆 |
通讯作者 | Dong, WH (Dong, Wenhao) |
作者单位 | 1.Tsinghua Univ, JCGCS, Beijing, Peoples R China; 2.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, 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. |
推荐引用方式 GB/T 7714 | Cao, DB ,Dong, WH ,Lin, YL ,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 | Cao, DB .,Dong, WH .,Lin, YL .,Wright, JS .,Xie, YY .,...&Zhao, X .(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 | Cao, DB ,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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