DOI: 10.1007/s00382-016-3108-5
Scopus记录号: 2-s2.0-84963705871
论文题名: Variability of hydrological extreme events in East Asia and their dynamical control: a comparison between observations and two high-resolution global climate models
作者: Freychet N. ; Duchez A. ; Wu C.-H. ; Chen C.-A. ; Hsu H.-H. ; Hirschi J. ; Forryan A. ; Sinha B. ; New A.L. ; Graham T. ; Andrews M.B. ; Tu C.-Y. ; Lin S.-J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-03-04 起始页码: 745
结束页码: 766
语种: 英语
英文关键词: Asian Monsoon
; East Asia
; Extreme precipitation
; Extremes variability
; High resolution models
英文摘要: This work investigates the variability of extreme weather events (drought spells, DS15, and daily heavy rainfall, PR99) over East Asia. It particularly focuses on the large scale atmospheric circulation associated with high levels of the occurrence of these extreme events. Two observational datasets (APHRODITE and PERSIANN) are compared with two high-resolution global climate models (HiRAM and HadGEM3-GC2) and an ensemble of other lower resolution climate models from CMIP5. We first evaluate the performance of the high resolution models. They both exhibit good skill in reproducing extreme events, especially when compared with CMIP5 results. Significant differences exist between the two observational datasets, highlighting the difficulty of having a clear estimate of extreme events. The link between the variability of the extremes and the large scale circulation is investigated, on monthly and interannual timescales, using composite and correlation analyses. Both extreme indices DS15 and PR99 are significantly linked to the low level wind intensity over East Asia, i.e. the monsoon circulation. It is also found that DS15 events are strongly linked to the surface temperature over the Siberian region and to the land-sea pressure contrast, while PR99 events are linked to the sea surface temperature anomalies over the West North Pacific. These results illustrate the importance of the monsoon circulation on extremes over East Asia. The dependencies on of the surface temperature over the continent and the sea surface temperature raise the question as to what extent they could affect the occurrence of extremes over tropical regions in future projections. © 2016, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53361
Appears in Collections: 过去全球变化的重建
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作者单位: Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan; National Oceanography Centre European Way, Southampton, United Kingdom; Hadley Centre, Met Office, Exeter, United Kingdom; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, United States
Recommended Citation:
Freychet N.,Duchez A.,Wu C.-H.,et al. Variability of hydrological extreme events in East Asia and their dynamical control: a comparison between observations and two high-resolution global climate models[J]. Climate Dynamics,2017-01-01,48(2017-03-04)