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学科主题: 地理学::自然地理学
题名: Processes Governing Water Vapor Isotope Composition in the Indo-Pacific Region: Convection and Water Vapor Transport
作者: Cai, Z (Cai, Zhongyin)1, 2; Tian, L (Tian, Lide)1, 3
通讯作者: Tian, LD
关键词: ASIAN SUMMER MONSOON ; STABLE-ISOTOPES ; QUANTITATIVE-ANALYSIS ; WEST PACIFIC ; EL-NINO ; PRECIPITATION ; ENSO ; CIRCULATION ; REANALYSIS ; SIMULATIONS
刊名: JOURNAL OF CLIMATE
发表日期: 2016
DOI: 10.1175/JCLI-D-16-0297.1
卷: 29, 期:23, 页:8535-8546
收录类别: SCI
合作性质: 国内
文章类型: Article
英文摘要: In an effort to understand the mechanisms controlling water vapor isotope composition in the Indo-Pacific region, encompassing southeastern Asia, this study investigates the spatial and interannual patterns in summer [June-September (JJAS)] water vapor isotopologues retrieved from the Tropospheric Emission Spectrometer (TES), especially those patterns associated with convection and water vapor transport. Both precipitation and water vapor isotope values exhibit a V-shaped longitudinal pattern in their spatial variations, reflecting the gradual rainout and increase in convective intensity along water vapor transport routes. On the temporal scale, compared with the 2006-10 JJAS mean conditions, TES water vapor delta D over the eastern Indian Ocean and southeastern Asia (R_W120; 10 degrees S-30 degrees N, 80 degrees-120 degrees E) is higher in the 2009 JJAS El Nino event when convective activity is reduced and lower in the 2010 JJAS La Nina event when convective activity is enhanced. This is consistent with the direct response of water vapor dD to deep convection. In contrast, TES water vapor dD over the western Pacific (R_WP; 10 degrees S-30 degrees N, 120 degrees-140 degrees E) is higher in the La Nina year than in the El Nino year, although convective activity in R_WP varies in the same manner as in R_W120. A comparison of water vapor dD values with convection and water vapor transport suggests that the westward transport of water vapor-isotopic anomalies and changes in the flux of water vapor transported from the central to the western Pacific lead to such an opposite response in the R_WP. These findings help interpret what causes the interannual variations recorded by Indo-Pacific water isotopologues.
语种: 英语
WOS记录号: WOS:000388676000014
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7483
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Bldg 3,Courtyard 16,Lin Cui Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China

Recommended Citation:
Cai, Z ,Tian, L . Processes Governing Water Vapor Isotope Composition in the Indo-Pacific Region: Convection and Water Vapor Transport[J]. JOURNAL OF CLIMATE,2016,29(23):8535-8546.
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