DOI: 10.1175/JCLI-D-14-00558.1
Scopus记录号: 2-s2.0-84961323078
论文题名: Controls on spatial and temporal variability in Northern Hemisphere terrestrial snow melt timing, 1979-2012
作者: Mioduszewski J.R. ; Rennermalm A.K. ; Robinson D.A. ; Wang L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 6 起始页码: 2136
结束页码: 2153
语种: 英语
Scopus关键词: Advection
; Budget control
; Climate change
; Digital storage
; Energy balance
; NASA
; Snow melting systems
; Atmosphere-land interactions
; Energy budget/balance
; Microwave observations
; Reanalysis
; Snowmelt
; Snow
; advection
; climate change
; energy balance
; longwave radiation
; Northern Hemisphere
; satellite data
; snowmelt
; spatiotemporal analysis
; Arctic
; Eurasia
; North America
英文摘要: Spring snowmelt onset has occurred earlier across much of the Northern Hemisphere land area in the last four decades. Understanding the mechanisms driving spring melt has remained a challenge, particularly in its spatial and temporal variability. Here, melt onset dates (MOD) obtained from passive microwave satellite data are used, as well as energy balance and meteorological fields from NASA's Modern-Era Retrospective Analysis for Research and Applications, to assess trends in the MOD and attribute melt onset across much of Arctic and sub-Arctic Eurasia and North America during the spring snowmelt season from 1979 to 2012. Across much of the Northern Hemisphere MOD has occurred 1-2 weeks earlier over this period, with the strongest trends in western and central Russia and insignificant trends across most of North America. Trends in MOD are reflected by those in energy balance terms, with energy advection providing an increasing proportion of melt energy in regions with the strongest MOD trends. Energy advection plays a larger role in melt onset in regions where snow begins melting in March and April, while insolation and longwave radiation drives melt where the MOD occurs in May and June. This implies that there is a potential shift in snowmelt drivers toward those involved in advective processes rather than radiative processes with an earlier MOD. As the high latitudes warm and terrestrial snow cover continues to melt and disappear earlier in the spring, it is valuable to elucidate regional snowmelt sensitivities to better understand regional responses to changing climatological processes. © 2015 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50839
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geography, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States; Climate Research Division, Environment Canada, Downsview, ON, Canada
Recommended Citation:
Mioduszewski J.R.,Rennermalm A.K.,Robinson D.A.,et al. Controls on spatial and temporal variability in Northern Hemisphere terrestrial snow melt timing, 1979-2012[J]. Journal of Climate,2015-01-01,28(6)