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DOI | 10.1007/s00382-017-3526-z |
How are heat waves over Yangtze River valley associated with atmospheric quasi-biweekly oscillation? | |
Gao, Miaoni1,2,3,4; Yang, Jing1,2; Wang, Bin3,4,5; Zhou, Siyuan2; Gong, Daoyi1,2; Kim, Seong-Joong6 | |
2018-12-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:4421-4437 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; South Korea |
英文摘要 | Over Yangtze River valley (YRV) where heat wave (HW) events most frequently occur in China during 1979-2014, 30 out of 57HW events (nearly 55%) in July and August is found to be related with the dry phases of atmospheric quasi-biweekly oscillation (QBWO). When a significant low-level anticyclonic anomaly (LAA) associated with QBWO appears over YRV, temperature rises sharply according to the adiabatic heating caused by subsidence and the enhanced downward solar radiation due to decreased clouds. The LAA with subsidence over YRV is primarily generated by quasi-biweekly atmospheric waves, which are classified to three types through case-by-case categorization, named as mid-latitude wavetrain, WNP (western North Pacific) wavetrain and double wavetrains, respectively. The mid-latitude wavetrain QBWO causes the LAA through subsidence induced by upper-level cyclonic vorticity which is associated with an eastward/southeastward migrating wave train from Eastern Europe to WNP in the upper troposphere. The WNP wavetrain QBWO forms LAA through a northwestward migrating lower-tropospheric wave train emanating from tropical WNP to southeastern China. The double wavetrains QBWO triggers LAA through both the low-level shear anticyclonic vorticity provided by a low-level northwestward/westward propagating wave train from tropical WNP to South China Sea and the upper-level positive vorticity associated with an eastward/southeastward migrating wave train from Eastern Europe to southeastern China in the upper troposphere. In all cases, South Asian High extends eastward and WNP subtropical high extends westward during HW events. Tracing these distinct precursory circulation anomalies may facilitate better understanding and short-medium range forecast of HW. |
英文关键词 | Heat wave Yangtze River valley Quasi-biweekly oscillation Wave trains |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451725600030 |
WOS关键词 | TEMPORAL VARIATIONS ; HIGH-TEMPERATURE ; TIBETAN PLATEAU ; NORTH-ATLANTIC ; SUMMER ; CHINA ; MONSOON ; RAINFALL ; IMPACT ; VARIABILITY |
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/36120 |
专题 | 气候变化 |
作者单位 | 1.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Fac Geog Sci, Acad Disaster Reduct & Emergency Management, Beijing 100875, Peoples R China; 3.Univ Hawaii Manoa, Dept Meteorol, Honolulu, HI 96822 USA; 4.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 5.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing 210044, Jiangsu, Peoples R China; 6.Korea Polar Res Inst, Div Climate Change, Incheon, South Korea |
推荐引用方式 GB/T 7714 | Gao, Miaoni,Yang, Jing,Wang, Bin,et al. How are heat waves over Yangtze River valley associated with atmospheric quasi-biweekly oscillation?[J]. CLIMATE DYNAMICS,2018,51:4421-4437. |
APA | Gao, Miaoni,Yang, Jing,Wang, Bin,Zhou, Siyuan,Gong, Daoyi,&Kim, Seong-Joong.(2018).How are heat waves over Yangtze River valley associated with atmospheric quasi-biweekly oscillation?.CLIMATE DYNAMICS,51,4421-4437. |
MLA | Gao, Miaoni,et al."How are heat waves over Yangtze River valley associated with atmospheric quasi-biweekly oscillation?".CLIMATE DYNAMICS 51(2018):4421-4437. |
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