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DOI10.1175/JCLI-D-15-0842.1
Recent Changes in the Moisture Source of Precipitation over the Tibetan Plateau
Zhang, Chi1; Tang, Qiuhong1; Chen, Deliang2
2017-03-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2017
卷号30期号:5
文章类型Article
语种英语
国家Peoples R China; Sweden
英文摘要

Evidence has suggested a wetting trend over part of the Tibetan Plateau ( TP) in recent decades, although there are large uncertainties in this trend due to sparse observations. Examining the change in the moisture source for precipitation over a region in the TP with the most obvious increasing precipitation trend may help understand the precipitation change. This study applied the modified Water Accounting Model with two atmospheric reanalyses, ground- observed precipitation, and evaporation froma land surfacemodel to investigate the change inmoisture source of the precipitation over the targeted region. The study estimated that on average more than 69% andmore than 21% of the moisture supply to precipitation over the targeted region came from land and ocean, respectively. The moisture transports from the west of the TP by the westerlies and from the southwest by the Indian summermonsoon likely contributed themost to precipitation over the targeted region. The moisture from inside the region may have contributed about 18% of the total precipitation. Most of the increasedmoisture supply to the precipitation during 1979- 2013 was attributed to the enhanced influx fromthe southwest and the local moisture supply. The precipitation recycling ratio over the targeted region increased significantly, suggesting an intensified hydrological cycle. Further analysis at monthly scale and with wet- dryyear composites indicates that the increased moisture contribution was mainly from the southwest and the targeted region duringMay and September. The enhanced water vapor transport from the IndianOcean during July and September and the intensified local hydrological recycling seem to be the primary reasons behind the recent precipitation increase over the targeted region.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000395539100016
WOS关键词ATMOSPHERIC MOISTURE ; GLOBAL PRECIPITATION ; SUMMER ; WATER ; MODEL ; CLIMATOLOGY ; ORIGIN ; SOMALI ; CHINA
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20937
专题气候变化
作者单位1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China;
2.Univ Gothenburg, Dept Earth Sci, Reg Climate Grp, Gothenburg, Sweden
推荐引用方式
GB/T 7714
Zhang, Chi,Tang, Qiuhong,Chen, Deliang. Recent Changes in the Moisture Source of Precipitation over the Tibetan Plateau[J]. JOURNAL OF CLIMATE,2017,30(5).
APA Zhang, Chi,Tang, Qiuhong,&Chen, Deliang.(2017).Recent Changes in the Moisture Source of Precipitation over the Tibetan Plateau.JOURNAL OF CLIMATE,30(5).
MLA Zhang, Chi,et al."Recent Changes in the Moisture Source of Precipitation over the Tibetan Plateau".JOURNAL OF CLIMATE 30.5(2017).
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