On thin ice: Linking elevation and long‐term losses of lake ice cover

Abstract Despite long‐term analyses of lake ice phenology globally, comparatively little is known about high‐elevation lakes, for which climate shifts are thought to be occurring faster than at lower elevations. Using a 36‐yr dataset (1983–2018) on alpine lakes (> 3000 m ASL) from the Green Lakes...

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Main Authors: Kyle R. Christianson, Kelly A. Loria, Peter D. Blanken, Nel Caine, Pieter T. J. Johnson
Format: Article
Language:English
Published: Wiley 2021-04-01
Series:Limnology and Oceanography Letters
Online Access:https://doi.org/10.1002/lol2.10181
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author Kyle R. Christianson
Kelly A. Loria
Peter D. Blanken
Nel Caine
Pieter T. J. Johnson
author_facet Kyle R. Christianson
Kelly A. Loria
Peter D. Blanken
Nel Caine
Pieter T. J. Johnson
author_sort Kyle R. Christianson
collection DOAJ
description Abstract Despite long‐term analyses of lake ice phenology globally, comparatively little is known about high‐elevation lakes, for which climate shifts are thought to be occurring faster than at lower elevations. Using a 36‐yr dataset (1983–2018) on alpine lakes (> 3000 m ASL) from the Green Lakes Valley, Colorado (GLV), we found that ice‐cover duration decreased by an average of ~ 24 d, due to both earlier ice‐off (9 d) and especially later ice‐on (15 d). Spring ice thickness also decreased by 0.88 cm yr−1. By comparison, ice‐cover duration in the GLV is decreasing ~ 50% faster than for Northern Hemisphere lakes (n = 215), which translates to an increase in open water duration ~ 2.5 times more in the GLV than the average of the Northern Hemisphere. Our analytical comparison demonstrated more rapid trends in this alpine region compared to lakes more broadly, and especially emphasized the influence of elevation on lake ice phenology.
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spelling doaj.art-dc6f176b6b754c719fcc8f238e35cb792022-12-21T22:21:04ZengWileyLimnology and Oceanography Letters2378-22422021-04-0162778410.1002/lol2.10181On thin ice: Linking elevation and long‐term losses of lake ice coverKyle R. Christianson0Kelly A. Loria1Peter D. Blanken2Nel Caine3Pieter T. J. Johnson4Institute of Arctic and Alpine Research University of Colorado Boulder Colorado USADepartment of Ecology and Evolutionary Biology University of Colorado Boulder Colorado USADepartment of Geography University of Colorado Boulder Colorado USAInstitute of Arctic and Alpine Research University of Colorado Boulder Colorado USADepartment of Ecology and Evolutionary Biology University of Colorado Boulder Colorado USAAbstract Despite long‐term analyses of lake ice phenology globally, comparatively little is known about high‐elevation lakes, for which climate shifts are thought to be occurring faster than at lower elevations. Using a 36‐yr dataset (1983–2018) on alpine lakes (> 3000 m ASL) from the Green Lakes Valley, Colorado (GLV), we found that ice‐cover duration decreased by an average of ~ 24 d, due to both earlier ice‐off (9 d) and especially later ice‐on (15 d). Spring ice thickness also decreased by 0.88 cm yr−1. By comparison, ice‐cover duration in the GLV is decreasing ~ 50% faster than for Northern Hemisphere lakes (n = 215), which translates to an increase in open water duration ~ 2.5 times more in the GLV than the average of the Northern Hemisphere. Our analytical comparison demonstrated more rapid trends in this alpine region compared to lakes more broadly, and especially emphasized the influence of elevation on lake ice phenology.https://doi.org/10.1002/lol2.10181
spellingShingle Kyle R. Christianson
Kelly A. Loria
Peter D. Blanken
Nel Caine
Pieter T. J. Johnson
On thin ice: Linking elevation and long‐term losses of lake ice cover
Limnology and Oceanography Letters
title On thin ice: Linking elevation and long‐term losses of lake ice cover
title_full On thin ice: Linking elevation and long‐term losses of lake ice cover
title_fullStr On thin ice: Linking elevation and long‐term losses of lake ice cover
title_full_unstemmed On thin ice: Linking elevation and long‐term losses of lake ice cover
title_short On thin ice: Linking elevation and long‐term losses of lake ice cover
title_sort on thin ice linking elevation and long term losses of lake ice cover
url https://doi.org/10.1002/lol2.10181
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