DOI: 10.1175/JCLI-D-16-0517.1
Scopus记录号: 2-s2.0-85020020307
论文题名: Recent winter precipitation changes over Eastern China in different warming periods and the associated East Asian jets and oceanic conditions
作者: Huang D. ; Dai A. ; Zhu J. ; Zhang Y. ; Kuang X.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 12 起始页码: 4443
结束页码: 4462
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate change
; Atlantic multidecadal oscillations
; Atmospheric circulation
; East Asian winter monsoon
; Global mean surface temperature
; Inter-decadal pacific oscillations
; Inter-decadal variability
; Meridional temperature gradient
; Pacific decadal oscillation
; Fighter aircraft
; Atlantic Multidecadal Oscillation
; atmospheric circulation
; climate change
; decadal variation
; Pacific Decadal Oscillation
; precipitation (climatology)
; surface temperature
; temperature gradient
; warming
; winter
; China
; Pacific Ocean
; South China Sea
英文摘要: Global-mean surface temperature has experienced fast warming during 1985-98 but stabilized during 1999-2013, especially in boreal winter. Climate changes over East Asia between the two warming periods and the associated mechanisms have not been fully understood. Analyses of observation and reanalysis data show that winter precipitation has decreased (increased) over southern (northeastern) China from 1985-98 to 1999-2013. Winds at 300 hPa over East Asia strengthened during 1999-2013 around 30°-47.5°N but weakened to the north and south of it. This change pattern caused the East Asian polar front jet (EAPJ) and the East Asian subtropical jet (EASJ) to shift, respectively, equatorward and poleward during 1999-2013. Associated with these jet displacements, the Siberian high enhanced and the East Asian trough shifted westward. The enhanced Siberian high strengthened the East Asian winter monsoon and weakened southwesterly winds over the South China Sea, leading to precipitation decreases over southern China. The westward shift of the East Asian trough enhanced convergence and precipitation over northeastern China. A combination of a negative phase of the interdecadal Pacific oscillation and a positive phase of the Atlantic multidecadal oscillation during 1999-2013 resulted in significant tropospheric warming over the low and high latitudes and cooling over the midlatitudes of East Asia. These changes enhanced the meridional temperature gradient and thus westerlies over the region between the two jets but weakened them to the south and north of it, thereby contributing to the wind change patterns and the jet displacements. © 2017 American Meteorological Society. 资助项目: NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48877
Appears in Collections: 气候变化与战略
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作者单位: China Meteorological Administration-Nanjing Uni. Joint Lab. for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing, China; Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York, Albany, NY, United States; National Center for Atmospheric Research, Boulder, CO, United States; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China
Recommended Citation:
Huang D.,Dai A.,Zhu J.,et al. Recent winter precipitation changes over Eastern China in different warming periods and the associated East Asian jets and oceanic conditions[J]. Journal of Climate,2017-01-01,30(12)