DOI: 10.1002/2013JD020429
论文题名: Altitude dependency of future snow cover changes over Central Japan evaluated by a regional climate model
作者: Kawase H. ; Hara M. ; Yoshikane T. ; Ishizaki N.N. ; Uno F. ; Hatsushika H. ; Kimura F.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 22 起始页码: 12444
结束页码: 12457
语种: 英语
英文关键词: downscaling
; regional climate model
; Sea of Japan
; snow cover change
Scopus关键词: Atmospheric temperature
; Climate models
; Experiments
; Global warming
; Oceanography
; Anticyclonic anomalies
; Atmospheric circulation changes
; Down-scaling
; Dynamical downscaling
; Regional climate modeling
; Sea of Japan
; Sea surface temperature (SST)
; Snow covers
; Snow
; altitude
; anticyclone
; atmospheric circulation
; climate modeling
; downscaling
; global warming
; marine atmosphere
; regional climate
; sea surface temperature
; snow cover
; Japan
; Pacific Ocean
; Sea of Japan
英文摘要: The Sea of Japan side of Central Japan is one of the heaviest snowfall areas in the world. We investigate near-future snow cover changes on the Sea of Japan side using a regional climate model. We perform the pseudo global warming (PGW) downscaling based on the five global climate models (GCMs). The changes in snow cover strongly depend on the elevation; decrease in the ratios of snow cover is larger in the lower elevations. The decrease ratios of the maximum accumulated snowfall in the short term, such as 1 day, are smaller than those in the long term, such as 1 week. We conduct the PGW experiments focusing on specific periods when a 2 K warming at 850 hPa is projected by the individual GCMs (PGW-2K85). The PGW-2K85 experiments show different changes in precipitation, resulting in snow cover changes in spite of similar warming conditions. Simplified sensitivity experiments that assume homogenous warming of the atmosphere (2 K) and the sea surface show that the altitude dependency of snow cover changes is similar to that in the PGW-2K85 experiments, while the uncertainty of changes in the sea surface temperature influences the snow cover changes both in the lower and higher elevations. The decrease in snowfall is, however, underestimated in the simplified sensitivity experiments as compared with the PGW experiments. Most GCMs project an increase in dry static stability and some GCMs project an anticyclonic anomaly over Central Japan, indicating the inhibition of precipitation, including snowfall, in the PGW experiments. Key Points Dynamical downscaling of snow cover changes using a regional climate model Snow cover changes around the complex terrain on the Sea of Japan side Impact of sea surface temperature and atmospheric circulation changes on snow ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63166
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama 236-0001, Kanagawa, Japan; Toyama Prefectural Environmental Science Research Center, Toyama, Japan
Recommended Citation:
Kawase H.,Hara M.,Yoshikane T.,et al. Altitude dependency of future snow cover changes over Central Japan evaluated by a regional climate model[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(22)