Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations
Arctic lakes, through their ice cover phenology, are a key indicator of climatic changes that the high-latitude environment is experiencing. In the case of lakes in the Canadian Arctic Archipelago (CAA), many of which are ice covered more than 10 months per year, warmer temperatures could result in...
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ftdoajarticles:oai:doaj.org/article:d6693dfc433f41acacd2ddf653731a01 2023-05-15T14:28:59+02:00 Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations C. M. Surdu C. R. Duguay D. Fernández Prieto 2016-05-01T00:00:00Z https://doi.org/10.5194/tc-10-941-2016 https://doaj.org/article/d6693dfc433f41acacd2ddf653731a01 EN eng Copernicus Publications http://www.the-cryosphere.net/10/941/2016/tc-10-941-2016.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-10-941-2016 https://doaj.org/article/d6693dfc433f41acacd2ddf653731a01 The Cryosphere, Vol 10, Iss 3, Pp 941-960 (2016) Environmental sciences GE1-350 Geology QE1-996.5 article 2016 ftdoajarticles https://doi.org/10.5194/tc-10-941-2016 2022-12-31T15:10:57Z Arctic lakes, through their ice cover phenology, are a key indicator of climatic changes that the high-latitude environment is experiencing. In the case of lakes in the Canadian Arctic Archipelago (CAA), many of which are ice covered more than 10 months per year, warmer temperatures could result in ice regime shifts. Within the dominant polar-desert environment, small local warmer areas have been identified. These relatively small regions – polar oases – with longer growing seasons and greater biological productivity and diversity are secluded from the surrounding barren polar desert. The ice regimes of 11 lakes located in both polar-desert and polar-oasis environments, with surface areas between 4 and 542 km 2 , many of unknown bathymetry, were documented. In order to investigate the response of ice cover of lakes in the CAA to climate conditions during recent years, a 15-year time series (1997–2011) of RADARSAT-1/2 ScanSAR Wide Swath, ASAR Wide Swath, and Landsat acquisitions were analyzed. Results show that melt onset occurred earlier for all observed lakes. With the exception of Lower Murray Lake, all lakes experienced earlier summer ice minimum and water-clear-of-ice (WCI) dates, with greater changes being observed for polar-oasis lakes (9–24 days earlier WCI dates for lakes located in polar oases and 2–20 days earlier WCI dates for polar-desert lakes). Additionally, results suggest that some lakes may be transitioning from a perennial/multiyear to a seasonal ice regime, with only a few lakes maintaining a multiyear ice cover on occasional years. Aside Lake Hazen and Murray Lakes, which preserved their ice cover during the summer of 2009, no residual ice was observed on any of the other lakes from 2007 to 2011. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Lake Hazen polar desert The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic Asar ENVELOPE(134.033,134.033,68.667,68.667) Canadian Arctic Archipelago Lake Hazen ENVELOPE(-71.017,-71.017,81.797,81.797) The Cryosphere 10 3 941 960 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 C. M. Surdu C. R. Duguay D. Fernández Prieto Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Arctic lakes, through their ice cover phenology, are a key indicator of climatic changes that the high-latitude environment is experiencing. In the case of lakes in the Canadian Arctic Archipelago (CAA), many of which are ice covered more than 10 months per year, warmer temperatures could result in ice regime shifts. Within the dominant polar-desert environment, small local warmer areas have been identified. These relatively small regions – polar oases – with longer growing seasons and greater biological productivity and diversity are secluded from the surrounding barren polar desert. The ice regimes of 11 lakes located in both polar-desert and polar-oasis environments, with surface areas between 4 and 542 km 2 , many of unknown bathymetry, were documented. In order to investigate the response of ice cover of lakes in the CAA to climate conditions during recent years, a 15-year time series (1997–2011) of RADARSAT-1/2 ScanSAR Wide Swath, ASAR Wide Swath, and Landsat acquisitions were analyzed. Results show that melt onset occurred earlier for all observed lakes. With the exception of Lower Murray Lake, all lakes experienced earlier summer ice minimum and water-clear-of-ice (WCI) dates, with greater changes being observed for polar-oasis lakes (9–24 days earlier WCI dates for lakes located in polar oases and 2–20 days earlier WCI dates for polar-desert lakes). Additionally, results suggest that some lakes may be transitioning from a perennial/multiyear to a seasonal ice regime, with only a few lakes maintaining a multiyear ice cover on occasional years. Aside Lake Hazen and Murray Lakes, which preserved their ice cover during the summer of 2009, no residual ice was observed on any of the other lakes from 2007 to 2011. |
format |
Article in Journal/Newspaper |
author |
C. M. Surdu C. R. Duguay D. Fernández Prieto |
author_facet |
C. M. Surdu C. R. Duguay D. Fernández Prieto |
author_sort |
C. M. Surdu |
title |
Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
title_short |
Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
title_full |
Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
title_fullStr |
Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
title_full_unstemmed |
Evidence of recent changes in the ice regime of lakes in the Canadian High Arctic from spaceborne satellite observations |
title_sort |
evidence of recent changes in the ice regime of lakes in the canadian high arctic from spaceborne satellite observations |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-941-2016 https://doaj.org/article/d6693dfc433f41acacd2ddf653731a01 |
long_lat |
ENVELOPE(134.033,134.033,68.667,68.667) ENVELOPE(-71.017,-71.017,81.797,81.797) |
geographic |
Arctic Asar Canadian Arctic Archipelago Lake Hazen |
geographic_facet |
Arctic Asar Canadian Arctic Archipelago Lake Hazen |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Lake Hazen polar desert The Cryosphere |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Lake Hazen polar desert The Cryosphere |
op_source |
The Cryosphere, Vol 10, Iss 3, Pp 941-960 (2016) |
op_relation |
http://www.the-cryosphere.net/10/941/2016/tc-10-941-2016.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-10-941-2016 https://doaj.org/article/d6693dfc433f41acacd2ddf653731a01 |
op_doi |
https://doi.org/10.5194/tc-10-941-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
3 |
container_start_page |
941 |
op_container_end_page |
960 |
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1766303099833548800 |