globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0155.1
Scopus记录号: 2-s2.0-85008684360
论文题名:
Impacts of anomalous midlatitude cyclone activity over East Asia during summer on the decadal mode of East Asian summer monsoon and its possible mechanism
作者: Chen H.; Teng F.; Zhang W.; Liao H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:2
起始页码: 739
结束页码: 753
语种: 英语
Scopus关键词: Atmospheric thermodynamics ; Climatology ; Dynamics ; Meteorology ; Storms ; Atmosphere-land interactions ; Atmospheric circulation ; Climate variability ; Cyclogenesis/cyclolysis ; Monsoons ; Climate change ; algorithm ; atmosphere-biosphere interaction ; atmospheric circulation ; atmospheric dynamics ; climate variation ; cyclogenesis ; cyclone ; decadal variation ; midlatitude environment ; monsoon ; summer ; temperature gradient ; Eurasia ; Mongolia
英文摘要: By using an objective identification and tracking algorithm of the cyclone, the statistics of midlatitude cyclone activity in East Asia during summer for the period 1979-2013 were analyzed. The impact of the midlatitude summer cyclone anomalies in East Asia on the decadal mode of East Asian summer monsoon (EASM) was investigated and possible mechanisms were proposed. The possible reasons for the anomalous cyclone activity from the perspective of land surface thermal forcing were also explored. Results indicate that the midlatitude summer cyclone activity over East Asia exhibits decadal changes in the period of 1979-2013 and is significantly weakened after early 1990s. Further analysis indicates that there is a close relationship between the midlatitude summer cyclone activity over East Asia and the decadal variation of EASM; when the midlatitude summer cyclone activity over East Asia is strong (weak), EASM tends to be intensified (weakened), and the weak cyclone activity after 1993 generally coincides with the decadal weakening of EASM. Moreover, there is a close linkage between the weakening of cyclonic activity after the early 1990s and the nonuniform surface warming of the Eurasian continent. Significant warming to the west of Mongolia tends to weaken the north-south temperature gradient and the atmospheric baroclinicity to its south and eventually can lead to weakening of the midlatitude cyclone activity over East Asia. © 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/49830
Appears in Collections:气候变化事实与影响

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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; International Joint Research Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology, Nanjing, China; School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, China

Recommended Citation:
Chen H.,Teng F.,Zhang W.,et al. Impacts of anomalous midlatitude cyclone activity over East Asia during summer on the decadal mode of East Asian summer monsoon and its possible mechanism[J]. Journal of Climate,2017-01-01,30(2)
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