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DOI | 10.1002/joc.5903 |
Decadal variability in summer precipitation over eastern China and its response to sensible heat over the Tibetan Plateau since the early 2000s | |
Wang, Huan1,2; Li, Dongliang1,2 | |
2019-03-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:3页码:1604-1617 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This study investigates the decadal variations in summer precipitation over eastern China (SPEC) and its response to the decadal change of sensible heat (SH) flux over the Tibetan Plateau (TP). The results show that SPEC experiences a significant decadal change in approximate 2003, demonstrating positive rainfall anomalies over central China and negative anomalies over northeast, north, and south China. Meanwhile, a noticeable increase in SH over the TP occurs in the early 2000s at the decadal time scale. Further analysis reveals that when spring SH over the TP is abnormally strong, there will be a stronger atmospheric heat source and development of deep convection over the TP in the forthcoming summer. The positive thermal forcing induces an abnormal anticyclonic circulation and airflow divergence in the upper layer and cyclonic circulation and airflow convergence in the mid-layer over the TP. And the negative vorticity and positive geopotential height anomalies in the upper layer over the TP and south China leads to the strengthening of the South Asian High (SAH) and the northwestern Pacific subtropical high (NWPSH). As a result, cold and dry air from higher latitudes and warm and humid air from the tropics converge over central China and diverge over north and south China. In addition, there exist a strong ascending motion over central China and an anomalous descending motion over south China due to the positive diabatic heating and horizontal temperature advection anomalies over central China and negative anomalies over south China. On the other hand, the circulation conditions strengthen the East Asian summer monsoon and weaken the South China Sea summer monsoon. Ultimately, more moisture is transported into central China, but less into south China, which give rise to positive and negative rainfall amounts in the corresponding areas, respectively. |
英文关键词 | atmospheric circulation decadal variations since the early 2000s sensible heat over the Tibetan Plateau summer precipitation over eastern China thermal forcing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461606600031 |
WOS关键词 | TROPICAL PACIFIC SSTS ; INTERDECADAL VARIATIONS ; PART I ; MONSOON RAINFALL ; NORTH CHINA ; ASSOCIATION ; TRENDS ; OCEAN ; SHIFT ; CIRCULATION |
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/36997 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Key Lab Meteorol Disaster,Minist Educ, Nanjing 210044, Jiangsu, Peoples R China; 2.NUIST, Int Joint Res Lab Climate & Environm Change ILCEC, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Huan,Li, Dongliang. Decadal variability in summer precipitation over eastern China and its response to sensible heat over the Tibetan Plateau since the early 2000s[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(3):1604-1617. |
APA | Wang, Huan,&Li, Dongliang.(2019).Decadal variability in summer precipitation over eastern China and its response to sensible heat over the Tibetan Plateau since the early 2000s.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(3),1604-1617. |
MLA | Wang, Huan,et al."Decadal variability in summer precipitation over eastern China and its response to sensible heat over the Tibetan Plateau since the early 2000s".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.3(2019):1604-1617. |
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