DOI: 10.1002/joc.5729
论文题名: A model-based comparison of extreme winds in the Arctic and around Greenland
作者: Gutjahr O. ; Heinemann G.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 14 起始页码: 5272
结束页码: 5292
语种: 英语
英文关键词: Arctic
; COSMO-CLM
; extreme value analysis
; POT
; regional climate model
; wind speed
Scopus关键词: Sea ice
; Wind effects
; Arctic
; COSMO-CLM
; Extreme value analysis
; Regional climate modeling
; Wind speed
; Climate models
; climate modeling
; comparative study
; computer simulation
; extreme event
; regional climate
; sea ice
; turbulence
; water budget
; wind velocity
; Arctic
; Denmark Strait
; Greenland
; Nares Strait
英文摘要: This paper compares extreme value statistics of daily maximum 10 m wind speed in winter simulated by the regional climate model COSMO-CLM at a horizontal resolution of 15 km (C15) with the reanalyses ERA-Interim and Arctic System reanalysis (ASR version 1 and 2) and with a satellite data set (CCMPv2). Our C15 simulation (1979/1980–2015/2016, November–April) is thereby the longest high-resolution simulation available for the Arctic. The results show that the extreme wind speeds tend to increase over the ocean with increasing the horizontal model resolution. A horizontal resolution of ≤15 km is required to sufficiently capture all extreme wind characteristics, in particular for the tip jets and barrier winds over the Irminger Sea and in the Denmark Strait, and for the low-level jets in the Nares Strait. Of almost equal importance are physical parameterizations of surface fluxes and of turbulence. Capturing extreme wind characteristics has a direct effect on climate relevant air–ice–ocean interactions, such as triggering open-ocean deep convection, polynya dynamics, or on the sea ice and freshwater balance of the Arctic. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116733
Appears in Collections: 气候减缓与适应
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作者单位: Max Planck Institute for Meteorology, Hamburg, Germany; Department of Environmental Meteorology, University of Trier, Trier, Germany
Recommended Citation:
Gutjahr O.,Heinemann G.. A model-based comparison of extreme winds in the Arctic and around Greenland[J]. International Journal of Climatology,2018-01-01,38(14)