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Regional disparities in warm season rainfall changes over arid eastern-central Asia
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; Ming, Y (Ming, Yi)3; Zhang, H (Zhang, Han)1,2; Chen, RS (Chen, Rensheng)4; Chen, YN (Chen, Yaning)5; Xu, FH (Xu, Fanghua)1,2; Lin, NM (Lin, Namei)1,2; Yu, CQ (Yu, Chaoqing)1,2; Zhang, B (Zhang, Bin)1,2; Jin, S (Jin, Shuang)6; Yang, K (Yang, Kun)1,2; Li, ZQ (Li, Zhongqin)6; Guo, JP (Guo, Jianping)7,8; Wang, L (Wang, Lei)9,10; Lin, GH (Lin, Guanghui)1,2
Source PublicationSCIENTIFIC REPORTS
2018-08-29
Volume8Issue:0Pages:文献号: 13051
DOI10.1038/s41598-018-31246-3
Abstract

Multiple studies have reported a shift in the trend of warm season rainfall over arid eastern-central Asia (AECA) around the turn of the new century, from increasing over the second half of the twentieth century to decreasing during the early years of the twenty-first. Here, a closer look based on multiple precipitation datasets reveals important regional disparities in these changes. Warm-season rainfall increased over both basin areas and mountain ranges during 1961-1998 due to enhanced moisture flux convergence associated with changes in the large-scale circulation and increases in atmospheric moisture content. Despite a significant decrease in warm-season precipitation over the high mountain ranges after the year 1998, warm season rainfall has remained large over low-lying basin areas. This discrepancy, which is also reflected in changes in river flow, soil moisture, and vegetation, primarily results from disparate responses to enhanced warming in the mountain and basin areas of AECA. In addition to changes in the prevailing circulation and moisture transport patterns, the decrease in precipitation over the mountains has occurred mainly because increases in local water vapor saturation capacity (which scales with temperature) have outpaced the available moisture supply, reducing relative humidity and suppressing precipitation. By contrast, rainfall over basin areas has been maintained by accelerated moisture recycling driven by rapid glacier retreat, snow melt, and irrigation expansion. This trend is unsustainable and is likely to reverse as these cryospheric buffers disappear, with potentially catastrophic implications for local agriculture and ecology.

Subject Area地理学
WOS IDWOS:000443004500007
Language英语
Indexed BySCIE
KeywordClimate-change Soil-moisture Tien-shan Northwest China Tarim River Water Vegetation Glaciers Impact Precipitation
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
Cooperation Status国际
ISSN2045-2322
Department环境变化与地表过程重点实验室
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8565
Collection图书馆
Corresponding AuthorLin, YL (Lin, Yanluan); Wright, JS (Wright, Jonathon S.); Chen, YN (Chen, Yaning)
Affiliation1.Tsinghua Univ, Key Lab Earth Syst Modeling, Dept Earth Syst Sci, Minist Educ, Beijing 100084, Peoples R China;
2.Tsinghua Univ, JCGCS, Beijing 100084, Peoples R China;
3.Princeton NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA;
4.Chinese Acad Sci, Qilian Alpine Ecol & Hydrol Res Stn, Key Lab Inland River Ecohydrol, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China;
5.Chinese Acad Sci, State Key Lab Desert & Oasis Ecol, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China;
6.Chinese Acad Sci, State Key Lab Cryospher Sci, Tian Shan Glaciol Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China;
7.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China;
8.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, CMA, Beijing 100081, Peoples R China;
9.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing, Peoples R China;
10.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Dong, WH ,Lin, YL ,Wright, JS ,et al. Regional disparities in warm season rainfall changes over arid eastern-central Asia[J]. SCIENTIFIC REPORTS,2018,8(0):文献号: 13051.
APA Dong, WH .,Lin, YL .,Wright, JS .,Xie, YY .,Ming, Y .,...&Lin, GH .(2018).Regional disparities in warm season rainfall changes over arid eastern-central Asia.SCIENTIFIC REPORTS,8(0),文献号: 13051.
MLA Dong, WH ,et al."Regional disparities in warm season rainfall changes over arid eastern-central Asia".SCIENTIFIC REPORTS 8.0(2018):文献号: 13051.
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