Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5699 |
What drives the decadal variation of global land monsoon precipitation over the past 50 years? | |
Zhang, Yanfang1; Guo, Yan1,2; Dong, Wenjie2,3; Li, Chunxiang4 | |
2018-11-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:13页码:4818-4829 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Global land monsoon precipitation (GLMP) has shown quasi-20-year oscillations overlying a significant downwards trend over the past 50years (1951-2004). However, what drives this decadal variation remains an open question. Based on Coupled Model Intercomparison Project Phase 5 (CMIP5) models, in this study we explored the possible drivers for the decadal variation of GLMP and quantified their contributions. A downwards trend of -0.30mm/day (100years) is observed in GLMP over 1951-2004 that explains 30% of total decadal variance, and it is primarily attributed to anthropogenic aerosols (AAs) external forcing. Further analyses showed that the downwards trend in GLMP mainly results from the widespread drying over Northern Hemisphere (NH) monsoon domain. Faster growth of AAs amount in NH than Southern Hemisphere (SH) over the past 50years results in a reduced hemispheric thermal contrast (cooler NH-warmer SH) due to more AA-forced cooling in NH. Reduced hemispheric thermal contrast facilitates a weakened NH summer monsoon circulation and finally suppresses monsoon precipitation. Besides the downwards trend, the remaining variation of GLMP exhibited quasi-20-year oscillations that explain 70% of total decadal variance. The decadal oscillations are primarily attributed to internal variability, in which the central tropical Pacific sea surface temperature anomaly and Arctic Oscillation together can explain 55% of its variation. |
英文关键词 | CMIP5 models decadal variation external forcing global land monsoon precipitation internal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450222100010 |
WOS关键词 | PART I ; NORTHERN-HEMISPHERE ; NATURAL FORCINGS ; CLIMATE CHANGES ; AEROSOLS ; CMIP5 ; OSCILLATION ; IMPACTS |
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/37502 |
专题 | 气候变化 |
作者单位 | 1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Future Earth Res Inst, Zhuhai Joint Innovat Ctr Climate Environm Ecosyst, Zhuhai, Peoples R China; 3.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Guangdong, Peoples R China; 4.Chinese Acad Sci, Inst Atmospher Phys, CAS Key Lab Reg Climate Environm Temperate East A, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Yanfang,Guo, Yan,Dong, Wenjie,et al. What drives the decadal variation of global land monsoon precipitation over the past 50 years?[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(13):4818-4829. |
APA | Zhang, Yanfang,Guo, Yan,Dong, Wenjie,&Li, Chunxiang.(2018).What drives the decadal variation of global land monsoon precipitation over the past 50 years?.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(13),4818-4829. |
MLA | Zhang, Yanfang,et al."What drives the decadal variation of global land monsoon precipitation over the past 50 years?".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.13(2018):4818-4829. |
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