DOI: 10.1002/joc.6017
Scopus记录号: 2-s2.0-85061438412
论文题名: Inter-decadal change of the middle-upper tropospheric land–sea thermal contrast in the late 1990s and the associated Northern Hemisphere hydroclimate
作者: Si D. ; Zhao P. ; Wang M.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
语种: 英语
英文关键词: inter-decadal change
; the Northern hemispheric hydroclimate
; tropospheric land–sea thermal contrast
Scopus关键词: Arid regions
; Atmospheric thermodynamics
; Tropics
; African monsoons
; Anticyclonic circulation
; Arid and semi-arid regions
; Atmospheric variability
; Interdecadal
; Northern Hemispheres
; the Northern hemispheric hydroclimate
; Thermal contrasts
; Troposphere
英文摘要: Although the middle-upper tropospheric land–sea thermal contrasts play very important roles in modifying global monsoon, the inter-decadal influences of the middle-upper tropospheric land–sea thermal contrasts in the Northern Hemisphere on the global monsoon have not investigated specifically. In this study, it is found that the summer middle-upper tropospheric zonal land–sea thermal contrast in the Eurasia–Pacific region changed from weak during the late 1980s and earlier and middle 1990s to strong after the late 1990s. This feature indicates a strengthened zonal land–sea thermal contrast during summer, which drives a stronger than normal Northern Hemisphere summer monsoon, with a hypothermal and wet climate over most of the subtropical East Asian and tropical African monsoon regions. In addition, the extensive anticyclonic circulation anomalies together with the less precipitation results in a warm and dry climate over the arid and semiarid regions to the west and north of the monsoon region, such as central Asia, Mongolia, and Northeast Asia. The inter-decadal change of the middle-upper tropospheric zonal thermal contrast is also closely associated with the warming trends of the extratropical North Pacific and North Atlantic during summer. However, this link possibly reflects a response of the warming oceans to the local atmospheric variability. © 2019 The Authors. International Journal of Climatology published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116628
Appears in Collections: 全球变化的国际研究计划
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作者单位: Climate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
Recommended Citation:
Si D.,Zhao P.,Wang M.. Inter-decadal change of the middle-upper tropospheric land–sea thermal contrast in the late 1990s and the associated Northern Hemisphere hydroclimate[J]. International Journal of Climatology,2019-01-01