气候变化领域集成服务门户(CCPortal): Warming and drying over the central Himalaya caused by an amplification of local mountain circulation

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DOI	10.1038/s41612-019-0105-5
	Warming and drying over the central Himalaya caused by an amplification of local mountain circulation
	Norris J.; Carvalho L.M.V.; Jones C.; Cannon F.
发表日期	2020
ISSN	23973722
卷号	3 期号:1
英文摘要	Climatic changes over the central Himalaya are critical for water resources in downstream regions where hundreds of millions of people live. Warming and drying in this region have both occurred in recent decades, but the associated meteorological factors are difficult to diagnose based on observations from unevenly distributed weather stations, reanalyses, and global climate models that poorly reproduce the orographic diurnal cycle. Here, recent trends in the summer diurnal cycle over the central Himalaya are investigated using a 36-year high-resolution dynamical downscaling. We illustrate contrasting trends over the diurnal cycle of circulation and convection over the Himalaya. In the daytime, warming of the slopes has enhanced anabatic upslope winds. At night, clearer skies have radiatively cooled the slopes, enhancing katabatic downslope winds. The enhanced upslope winds have prevented any drying over the mountains in the daytime, while the enhanced downslope winds are associated with significant nocturnal drying at high elevations. This amplification in the diurnal cycle is critical for projecting the future hydroclimate over the region’s complex terrain. © 2020, The Author(s).
语种	英语
scopus关键词	atmospheric circulation; climate change; climate modeling; complex terrain; diurnal variation; downscaling; elevation; future prospect; katabatic flow; mountain region; orographic effect; regional climate; warming; weather forecasting; wind field; Himalayas
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178065
作者单位	Earth Research Institute, University of California Santa Barbara, Santa Barbara, CA 93106, United States; Department of Geography, University of California Santa Barbara, Santa Barbara, CA 93106, United States; Atmospheric and Oceanic Sciences, University of California Los Angeles, Los Angeles, CA, United States; Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, United States
推荐引用方式 GB/T 7714	Norris J.,Carvalho L.M.V.,Jones C.,et al. Warming and drying over the central Himalaya caused by an amplification of local mountain circulation[J],2020,3(1).
APA	Norris J.,Carvalho L.M.V.,Jones C.,&Cannon F..(2020).Warming and drying over the central Himalaya caused by an amplification of local mountain circulation.npj Climate and Atmospheric Science,3(1).
MLA	Norris J.,et al."Warming and drying over the central Himalaya caused by an amplification of local mountain circulation".npj Climate and Atmospheric Science 3.1(2020).