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DOI | 10.1175/JCLI-D-19-0074.1 |
Evolution of the Asian-African Monsoonal Precipitation over the last 21 kyr and the Associated Dynamic Mechanisms | |
Shi, Jian1,2; Yan, Qing3,4 | |
2019-10-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:19页码:6551-6569 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The Asian-African monsoonal precipitation (AAMP) has a significant impact on the water availability, biodiversity, and livelihoods of billions of people. A comprehensive understanding of the AAMP behavior over Earth's history will help to make better future projections. Using a set of transient climate simulations over the last 21 000 years (21 ka), the variation of the AAMP and its responses to various external forcings, including orbital insolation, greenhouse gases (GHGs), and ice sheets, are explored. The precipitation evolutions in the individual monsoon domains have the characteristic of hemispheric synchrony over the last 21 ka. Specifically, the AAMP increased from the Last Glacial Maximum to the early Holocene with several abrupt events and then decreased subsequently. The raised orbital insolation and GHGs lead to an overall AAMP increase, but the enhanced insolation tends to induce a systematic northward shift of the Asian-African monsoon domain. Decreased meltwater discharge could promote the African and Indian monsoonal precipitation through strengthening the Atlantic Ocean meridional overturning circulation. However, the lowering of ice sheets (i.e., orographic effect) results in an anomalous dipole precipitation pattern between North China and India. An analysis of the moisture budget suggests that, although different external forcings may lead to the same sign of precipitation change (e.g., both increased insolation and GHGs can cause the enhanced AAMP), the thermodynamic and dynamic contributions to precipitation could vary greatly by region and forcing. This study provides a reference for the long-term behavior of the AAMP with rising GHGs, higher insolation, and potential melting of the Greenland Ice Sheet. |
英文关键词 | Monsoons Paleoclimate |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000484514300001 |
WOS关键词 | GREENLAND ICE-SHEET ; SUMMER MONSOON ; GLACIAL MAXIMUM ; NORTHERN-HEMISPHERE ; HIGH-RESOLUTION ; GLOBAL MONSOON ; INDIAN MONSOON ; HOLOCENE OPTIMUM ; VARIABILITY ; CLIMATE |
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/187431 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Minist Educ, Nanjing, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Nansen Zhu Int Res Ctr, Inst Atmospher Phys, Beijing, Peoples R China; 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Shi, Jian,Yan, Qing. Evolution of the Asian-African Monsoonal Precipitation over the last 21 kyr and the Associated Dynamic Mechanisms[J]. JOURNAL OF CLIMATE,2019,32(19):6551-6569. |
APA | Shi, Jian,&Yan, Qing.(2019).Evolution of the Asian-African Monsoonal Precipitation over the last 21 kyr and the Associated Dynamic Mechanisms.JOURNAL OF CLIMATE,32(19),6551-6569. |
MLA | Shi, Jian,et al."Evolution of the Asian-African Monsoonal Precipitation over the last 21 kyr and the Associated Dynamic Mechanisms".JOURNAL OF CLIMATE 32.19(2019):6551-6569. |
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