DOI: 10.1002/2017JD027661
Scopus记录号: 2-s2.0-85044521357
论文题名: Intralake Heterogeneity of Thermal Responses to Climate Change: A Study of Large Northern Hemisphere Lakes
作者: Woolway R.I. ; Merchant C.J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 6 起始页码: 3087
结束页码: 3098
语种: 英语
英文关键词: Climate change
; Lake
; Warming
Scopus关键词: climate change
; heterogeneity
; lake water
; Northern Hemisphere
; persistence
; satellite data
; spatial resolution
; surface water
; thermal regime
; time series
; warming
; water temperature
; Great Lakes [North America]
英文摘要: Lake surface water temperature (LSWT) measurements from various sources illustrate that lakes are warming in response to climate change. Most previous studies of geographical distributions of lake warming have tended to utilize data with limited spatial resolution of LSWTs, including single-point time series. Spatially resolved LSWT time series are now available from satellite observations, and some studies have investigated previously the intralake warming patterns in specific lakes (e.g., North American Great Lakes). However, across-lake comparisons of intralake warming differences have not yet been investigated at a large, across-continental scale, thus limiting our understanding of how intralake warming patterns differ more broadly. In this study, we analyze up to 20 years of satellite data from 19 lakes situated across the Northern Hemisphere, to investigate how LSWT changes vary across different lake surfaces. We find considerable intralake variability in warming trends across many lakes. The deepest areas of large lakes are characterized by a later onset of thermal stratification, a shorter stratified warming season and exhibit longer correlation timescales of LSWT anomalies. We show that deep areas of large lakes across the Northern Hemisphere as a result tend to display higher rates of warming of summer LSWT, arising from a greater temporal persistence in deep areas of the temperature anomalies associated with an earlier onset of thermal stratification. Utilization of single-point LSWT trends to represent changes in large lakes therefore suppresses important aspects of lake responses to climate change, whereas spatially resolved LSWT measurements can be exploited to provide more comprehensive understanding. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114253
Appears in Collections: 气候减缓与适应
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作者单位: Department of Meteorology, University of Reading, Reading, United Kingdom; National Centre for Earth Observation, University of Reading, Reading, United Kingdom
Recommended Citation:
Woolway R.I.,Merchant C.J.. Intralake Heterogeneity of Thermal Responses to Climate Change: A Study of Large Northern Hemisphere Lakes[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(6)