DOI: 10.1007/s00382-017-4038-6
Scopus记录号: 2-s2.0-85037695601
论文题名: Synoptic characteristics, atmospheric controls, and long-term changes of heat waves over the Indochina Peninsula
作者: Luo M. ; Lau N.-C.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-07-08 起始页码: 2707
结束页码: 2723
语种: 英语
英文关键词: Climate change
; East Asian winter monsoon
; Heat waves
; Indochina Peninsula
; South Asian summer monsoon
; Synoptic characteristics
Scopus关键词: climate change
; climate prediction
; heat wave
; long-term change
; monsoon
; summer
; synoptic meteorology
; winter
; Far East
; Indochina
; South Asia
英文摘要: The characteristics of heat wave (HW) events over the Indochina Peninsula are studied using the Climate Forecast System Reanalysis data for 1979–2010. HWs in the dry and wet seasons of Indochina are considered separately, and their typical synoptic behavior is examined in detail. Our results show that HWs in both seasons are accompanied by suppressed precipitation, and the region lies under an anomalously dry, hot, and subsiding atmospheric column. Further diagnoses reveal that HWs in the dry and wet seasons are linked to the weakening of the East Asian winter monsoon (EAWM) and the South Asian summer monsoon (SASM) circulations, respectively. On the one hand, HWs in the dry season are coincident with high-temperature anomalies over East Asia and accompanied by an anomalous cyclone over eastern China. The anomalous southwesterly flow over East Asia indicates a weakening of the climatological northeasterly circulation associated with the EAWM. On the other hand, HWs in the wet season are coincident with hot and dry anomalies in South Asia (i.e., Indian subcontinent). The anomalous easterly flow in that region opposes the climatological westerly regime of the SASM. Moreover, we found that the statistics for the frequency, duration, and amplitude of HWs for both seasons exhibit prominent intensifying trends, and the intensifying trends in the wet season are mostly about two to three times stronger than the dry season. These intensifying HWs activities are likely attributable to the weakening trend of monsoon circulations in recent decades. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109093
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Sha Tin, N.T., Hong Kong; Guangdong Key Laboratory for Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-sen University, Guangzhou, 510275, China; Department of Geography and Resource Management, The Chinese University of Hong Kong, Sha Tin, N.T., Hong Kong
Recommended Citation:
Luo M.,Lau N.-C.. Synoptic characteristics, atmospheric controls, and long-term changes of heat waves over the Indochina Peninsula[J]. Climate Dynamics,2018-01-01,51(2018-07-08)