气候变化领域集成服务门户(CCPortal): How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses

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DOI	10.5194/tc-14-3195-2020
	How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses
	Sophie Daloz A.; Mateling M.; L'ecuyer T.; Kulie M.; Wood N.B.; Durand M.; Wrzesien M.; Stjern C.W.; Dimri A.P.
发表日期	2020
ISSN	19940416
起始页码	3195
结束页码	3207
卷号	14 期号:9
英文摘要	CloudSat estimates that 1773 km3 of snow falls, on average, each year over the world's mountains. This amounts to 5% of the global snowfall accumulations. This study synthetizes mountain snowfall estimates over the four continents containing mountains (Eurasia, North America, South America and Africa), comparing snowfall estimates from a new satellite cloud-radar-based dataset to those from four widely used reanalyses: Modern-Era Retrospective analysis for Research and Applications (MERRA), MERRA-2, Japanese 55-year Reanalysis (JRA-55), and European Center for Medium-Range Weather Forecasts Re-Analysis (ERAInterim). Globally, the fraction of snow that falls in the world's mountains is very similar between all these independent datasets (4 %-5 %), providing confidence in this estimate. The fraction of snow that falls in the mountains compared to the continent as a whole is also very similar between the different datasets. However, the total of snow that falls globally and over each continent - the critical factor governing freshwater availability in these regions - varies widely between datasets. The consensus in fractions and the dissimilarities in magnitude could indicate that large-scale forcings may be similar in the five datasets, while local orographic enhancements at smaller scales may not be captured. This may have significant implications for our ability to diagnose regional trends in snowfall and its impacts on snowpack in rapidly evolving alpine environments. © Author(s) 2020.
英文关键词	alpine environment; CloudSat; estimation method; mountain region; observational method; snowpack; Africa; Eurasia; North America; South America
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202214
作者单位	Space Science and Engineering Center (SSEC), University of Wisconsin-Madison, 1225 West Dayton Street, Madison, WI 53706, United States; Center for Climatic Research (CCR), University of Wisconsin-Madison, 1225 West Dayton Street, Madison, WI 53706, United States; Center for International Climate Research (CICERO), Gaustadalleen 21, Oslo, 0349, Norway; Department of Atmospheric and Oceanic Sciences (AOS), University of Wisconsin-Madison, 1225 West Dayton Street, Madison, WI 53706, United States; NOAA/NESDIS/STAR/Advanced Satellite Products Branch, 1225 West Dayton Street, Madison, WI 53706, United States; School of Earth Sciences and Byrd Polar and Climate Research Center, Ohio State University, 108 Scott Hall, 1090 Carmack Rd, Columbus, OH 43210, United States; Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States; GESTAR, Universities Space Research Association, Columbia, MD 21046, United States; School of Environmental Sciences, Jawaharlal Nehru U...
推荐引用方式 GB/T 7714	Sophie Daloz A.,Mateling M.,L'ecuyer T.,et al. How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses[J],2020,14(9).
APA	Sophie Daloz A..,Mateling M..,L'ecuyer T..,Kulie M..,Wood N.B..,...&Dimri A.P..(2020).How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses.Cryosphere,14(9).
MLA	Sophie Daloz A.,et al."How much snow falls in the world's mountains? A first look at mountain snowfall estimates in A-train observations and reanalyses".Cryosphere 14.9(2020).