globalchange  > 全球变化的国际研究计划
DOI: 10.1002/joc.5905
Scopus记录号: 2-s2.0-85056279276
论文题名:
Variable correspondence between western North Pacific tropical cyclone frequency and East Asian subtropical jet stream during boreal summer: A tropical Pacific sea surface temperature perspective
作者: Hu C.; Zhang C.; Yang S.; Chen D.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期:3
起始页码: 1768
结束页码: 1776
语种: 英语
英文关键词: East Asian jet stream (EAJS) ; ENSO ; tropical cyclone frequency (TCF) ; western North Pacific (WNP)
Scopus关键词: Atmospheric movements ; Atmospheric temperature ; Climate change ; Hurricanes ; Storms ; Submarine geophysics ; Surface properties ; Surface waters ; Tropics ; Atmospheric environment ; East asian jet streams ; ENSO ; Meridional temperature gradient ; Sea surface temperature (SST) ; Sea surface temperature anomalies ; Tropical cyclone ; Western North Pacific ; Oceanography
英文摘要: Fluctuations in the summer relationship between western North Pacific tropical cyclone (TC) frequency (TCF) and East Asian subtropical jet stream (EAJS) are investigated using observations and composite analysis. Here TCF is divided into four categories to assess how different tropical Pacific sea surface temperature (SST) anomalies modulate TCF-EAJS associations. Results show that high TCF would weaken (strengthen) the south (north) part of EAJS, but with different locally poleward shifts during La Niña- and El Niño-like events. In contrast, during low TCF, a clearly southward shifted, strengthened EAJS occurs only when the western Pacific SST cools, but no significant change is observed when the western Pacific SST warms up. Further analysis shows that the possible reason why TCF has diverse linkages to EAJS is that the TC genesis locations and TC tracks are quite different under different tropical Pacific SST anomalies, even for quasi-constant TCF. Potential mechanisms responsible for the changing TCF-EAJS associations can be physically explained by the exceptional configurations of tropospheric meridional temperature gradient anomaly and the deformed-and-displaced Pacific–Japan-like wavetrain, which is mainly due to non-negligible differences in large-scale oceanic and atmospheric environments that modulate the TC genesis locations and TC tracks. This study highlights the importance of a tropical SST perspective when analysing TCF-EAJS associations. © 2018 Royal Meteorological Society
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116537
Appears in Collections:全球变化的国际研究计划

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作者单位: School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Zhuhai, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Hangzhou, China; Climate Center, Guangxi Meteorological Bureau, Nanning, China; Institute of Earth Climate and Environment System, Sun Yat-sen University, Guangzhou, China

Recommended Citation:
Hu C.,Zhang C.,Yang S.,et al. Variable correspondence between western North Pacific tropical cyclone frequency and East Asian subtropical jet stream during boreal summer: A tropical Pacific sea surface temperature perspective[J]. International Journal of Climatology,2019-01-01,39(3)
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