Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018

doi:10.1038/s41586-020-2258-0

GSTDTAP > 地球科学

DOI	10.1038/s41586-020-2258-0
	Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018
	Ibrahim, Nizar 1; Maganuco, Simone 2,3; Dal Sasso, Cristiano 3; Fabbri, Matteo 4; Auditore, Marco 3; Bindellini, Gabriele 3,5; Martill, David M.6; Zouhri, Samir 7; Mattarelli, Diego A.3; Unwin, David M.8; Wiemann, Jasmina 4; Bonadonna, Davide 2; Amane, Ayoub 7; Jakubczak, Juliana 1; Joger, Ulrich 9; Lauder, George V.10,11; Pierce, Stephanie E.10,11
	2020-05-20
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	581 期号:7808 页码:294-+
文章类型	Article
语种	英语
国家	Finland; Canada
英文关键词	Warming surface temperatures have driven a substantial reduction in the extent and duration of Northern Hemisphere snow cover(1-3). These changes in snow cover affect Earth' s climate system via the surface energy budget, and influence freshwater resources across a large proportion of the Northern Hemisphere(4-6). In contrast to snow extent, reliable quantitative knowledge on seasonal snow mass and its trend is lacking(7-9). Here we use the new GlobSnow 3.0 dataset to show that the 1980-2018 annual maximum snow mass in the Northern Hemisphere was, on average, 3,062 +/- 35 billion tonnes (gigatonnes). Our quantification is for March (the month that most closely corresponds to peak snow mass), covers non-alpine regions above 40 degrees N and, crucially, includes a bias correction based on in-field snow observations. We compare our GlobSnow 3.0 estimates with three independent estimates of snow mass, each with and without the bias correction. Across the four datasets, the bias correction decreased the range from 2,433-3,380 gigatonnes (mean 2,867) to 2,846-3,062 gigatonnes (mean 2,938)-a reduction in uncertainty from 33% to 7.4%. On the basis of our bias-corrected GlobSnow 3.0 estimates, we find different continental trends over the 39-year satellite record. For example, snow mass decreased by 46 gigatonnes per decade across North America but had a negligible trend across Eurasia both continents exhibit high regional variability. Our results enable a better estimation of the role of seasonal snow mass in Earth' s energy, water and carbon budgets. Applying a bias correction to a state-of-the-art dataset covering non-alpine regions of the Northern Hemisphere and to three other datasets yields a more constrained quantification of snow mass in March from 1980 to 2018.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000534818200013
WOS关键词	WATER EQUIVALENT ; RADIOMETER DATA ; BOREAL ; COVER ; DEPTH ; CLIMATE ; MODEL
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/270447
专题	地球科学资源环境科学
作者单位	1.Univ Detroit Mercy, Dept Biol, Detroit, MI 48221 USA; 2.Assoc Paleontol Paleoartist Italiana, Parma, Italy; 3.Museo Storia Nat Milano, Sez Paleontol Vertebrati, Milan, Italy; 4.Yale Univ, Dept Geol & Geophys, New Haven, CT USA; 5.Univ Milan, Dipartimento Sci Terra A Desio, Milan, Italy; 6.Univ Portsmouth, Sch Environm Geog & Geol Sci, Portsmouth, Hants, England; 7.Hassan II Univ Casablanca, Dept Geol, Casablanca, Morocco; 8.Univ Leicester, Sch Museum Studies, Leicester, Leics, England; 9.Staatliches Nat Hist Museum Braunschweig, Braunschweig, Germany; 10.Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 USA; 11.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA
推荐引用方式 GB/T 7714	Ibrahim, Nizar,Maganuco, Simone,Dal Sasso, Cristiano,et al. Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018[J]. NATURE,2020,581(7808):294-+.
APA	Ibrahim, Nizar.,Maganuco, Simone.,Dal Sasso, Cristiano.,Fabbri, Matteo.,Auditore, Marco.,...&Pierce, Stephanie E..(2020).Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018.NATURE,581(7808),294-+.
MLA	Ibrahim, Nizar,et al."Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018".NATURE 581.7808(2020):294-+.