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DOI | 10.1175/JCLI-D-18-0890.1 |
Global Monsoon Responses to Decadal Sea Surface Temperature Variations during the Twentieth Century: Evidence from AGCM Simulations | |
Jiang, Jie1,2; Zhou, Tianjun2,3 | |
2019-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:22页码:7675-7695 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Multidecadal variations in the global land monsoon were observed during the twentieth century, with an overall increasing trend from 1901 to 1955 that was followed by a decreasing trend up to 1990, but the mechanisms governing the above changes remain inconclusive. Based on the outputs of two atmospheric general circulation models (AGCMs) forced by historical sea surface temperature (SST) covering the twentieth century, supplemented with AGCM simulations forced by idealized SST anomalies representing different conditions of the North Atlantic and tropical Pacific, evidence shows that the observed changes can be partly reproduced, particularly over the Northern Hemisphere summer monsoon (NHSM) domain, demonstrating the modulation of decadal SST changes on the long-term variations in monsoon precipitation. Moisture budget analysis is performed to understand the interdecadal changes in monsoon precipitation, and the dynamic term associated with atmospheric circulation changes is found to be prominent, while the contribution of the thermodynamic term associated with humidity changes can lead to coincident wetting over the NHSM domain. The increase (decrease) in NHSM land precipitation during 1901-55 (1956-90) is associated with the strengthening (weakening) of NHSM circulation and Walker circulation. The multidecadal scale changes in atmospheric circulation are driven by SST anomalies over the North Atlantic and the Pacific. A warmer North Atlantic together with a colder eastern tropical Pacific and a warmer western subtropical Pacific can lead to a strengthened meridional gradient in mid-to-upper-tropospheric thickness and strengthened trade winds, which transport more water vapor into monsoon regions, leading to an increase in monsoon precipitation. |
英文关键词 | Atmospheric circulation Monsoons Sea surface temperature Moisture moisture budget General circulation models Interdecadal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490475200001 |
WOS关键词 | ASIAN SUMMER MONSOON ; ATMOSPHERE COUPLED MODEL ; INTERDECADAL VARIABILITY ; INTERANNUAL VARIABILITY ; NORTHERN-HEMISPHERE ; CLIMATE MODELS ; INDIAN-OCEAN ; PRECIPITATION ; RAINFALL ; DROUGHT |
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/188117 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Jie,Zhou, Tianjun. Global Monsoon Responses to Decadal Sea Surface Temperature Variations during the Twentieth Century: Evidence from AGCM Simulations[J]. JOURNAL OF CLIMATE,2019,32(22):7675-7695. |
APA | Jiang, Jie,&Zhou, Tianjun.(2019).Global Monsoon Responses to Decadal Sea Surface Temperature Variations during the Twentieth Century: Evidence from AGCM Simulations.JOURNAL OF CLIMATE,32(22),7675-7695. |
MLA | Jiang, Jie,et al."Global Monsoon Responses to Decadal Sea Surface Temperature Variations during the Twentieth Century: Evidence from AGCM Simulations".JOURNAL OF CLIMATE 32.22(2019):7675-7695. |
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