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DOI | 10.1007/s00382-019-04845-7 |
Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon | |
Zhang, Yazhou1; Li, Jianping1,2; Wang, Qiuyun1; Xue, Jiaqing3,4 | |
2019-08-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:2295-2308 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This study investigates the energy conversion processes and their relation to convection (circulation) during the South China Sea summer monsoon (SCSSM) years from the viewpoint of atmospheric perturbation potential energy (PPE). An atmospheric PPE dipole pattern associated with the SCSSM develops over the western North Pacific (WNP) and southern Maritime Continent (SMC) in the boreal summer, serving as a link between the SCSSM and diabatic heating. Actually, the conversion between the energy variations and the convection over the WNP is distinctly different with that over the SMC. The precipitation leads the PPE over the WNP, while similar situation is reversed over the SMC. During strong SCSSM years, the higher PPE over the WNP, controlled primarily by the latent heat released from condensation related to surplus precipitation, is corresponding to the negative energy conversion (Ck) over there. This indicates that more PPE is converted to perturbation kinetic energy and further intensifying ascending motion over the WNP. Consequently, the descending movement reduces the PPE and is corresponding to positive Ck over the SMC, suggesting that the less PPE converts into the perturbation kinetic energy and in turn favors the descending movement and deficit precipitation there. The enhanced southwesterly induced by this SCSSM Hadley circulation, superimposed on the mean southwesterly wind, further favors the intensification of the SCSSM, implying that the SCSSM can maintain development through the positive convection-PPE-circulation feedback. |
英文关键词 | South China Sea summer monsoon Atmospheric perturbation potential energy (PPE) Energy conversion Perturbation kinetic energy Positive circulation-PPE-convection feedback |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000475558800061 |
WOS关键词 | RAINFALL VARIABILITY ; LIMITED REGION ; PACIFIC ; CYCLE ; OSCILLATION ; TEMPERATURE ; CLIMATE ; IMPACT |
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/185455 |
专题 | 气候变化 |
作者单位 | 1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci GCESS, Beijing 100875, Peoples R China; 2.Ocean Univ China, Qingdao Natl Lab Marine Sci & Technol, Inst Adv Ocean Studies, Key Lab Phys Oceanog, Qingdao 266100, Shandong, Peoples R China; 3.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China; 4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Yazhou,Li, Jianping,Wang, Qiuyun,et al. Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon[J]. CLIMATE DYNAMICS,2019,53:2295-2308. |
APA | Zhang, Yazhou,Li, Jianping,Wang, Qiuyun,&Xue, Jiaqing.(2019).Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon.CLIMATE DYNAMICS,53,2295-2308. |
MLA | Zhang, Yazhou,et al."Variations in atmospheric perturbation potential energy associated with the South China Sea summer monsoon".CLIMATE DYNAMICS 53(2019):2295-2308. |
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