气候变化领域集成服务门户(CCPortal): Climate change and Northern Hemisphere lake and river ice phenology from 1931-2005

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DOI	10.5194/tc-15-2211-2021
	Climate change and Northern Hemisphere lake and river ice phenology from 1931-2005
	Newton A.M.W.; Mullan D.J.
发表日期	2021
ISSN	19940416
卷号	15 期号:5
英文摘要	At high latitudes and altitudes one of the main controls on hydrological and biogeochemical processes is the breakup and freeze-up of lake and river ice. This study uses 3510 time series from across 678 Northern Hemisphere lakes and rivers to explore historical patterns in lake and river ice phenology across five overlapping time periods (1931-1960, 1946-1975, 1961-1990, 1976-2005, and 1931-2005). These time series show that the number of annual open-water days increased by 0.63 d per decade from 1931-2005 across the Northern Hemisphere, with trends for breakup and, to a lesser extent, freeze-up closely correlating with regionally averaged temperature. Breakup and freeze-up trends display a spatiotemporally complex evolution and reveal considerable caveats with interpreting the implications of ice phenology changes at lake and river sites that may only have breakup or freeze-up data, rather than both. These results provide an important contribution by showing regional variation in ice phenology trends through time that can be hidden by longer-term trends. The overlapping 30-year time periods also show evidence for an acceleration in warming trends through time. Understanding the changes on both long- A nd short-term timescales will be important for determining the causes of this change, the underlying biogeochemical processes associated with it, and the wider climatological significance as global temperatures rise. © 2021 Andrew M. W. Newton.
英文关键词	climate change; lacustrine environment; Northern Hemisphere; phenology; river ice; spatiotemporal analysis
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/202392
作者单位	School of Natural and Built Environment, Geography, Queen's University Belfast, Belfast, BT71NN, United Kingdom
推荐引用方式 GB/T 7714	Newton A.M.W.,Mullan D.J.. Climate change and Northern Hemisphere lake and river ice phenology from 1931-2005[J],2021,15(5).
APA	Newton A.M.W.,&Mullan D.J..(2021).Climate change and Northern Hemisphere lake and river ice phenology from 1931-2005.Cryosphere,15(5).
MLA	Newton A.M.W.,et al."Climate change and Northern Hemisphere lake and river ice phenology from 1931-2005".Cryosphere 15.5(2021).