Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing
Arctic snow and ice cover are vital indicators of climate variability and change, yet while the Arctic shows overall warming and dramatic changes in snow and ice cover, the response of these high-latitude regions to recent climatic change varies regionally. Although previous studies have examined ch...
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ftdoajarticles:oai:doaj.org/article:603450c65938475ea04fd129ec1c5be6 2023-05-15T14:48:42+02:00 Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing A. A. Dauginis L. C. Brown 2021-10-01T00:00:00Z https://doi.org/10.5194/tc-15-4781-2021 https://doaj.org/article/603450c65938475ea04fd129ec1c5be6 EN eng Copernicus Publications https://tc.copernicus.org/articles/15/4781/2021/tc-15-4781-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-4781-2021 1994-0416 1994-0424 https://doaj.org/article/603450c65938475ea04fd129ec1c5be6 The Cryosphere, Vol 15, Pp 4781-4805 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-4781-2021 2022-12-31T07:51:27Z Arctic snow and ice cover are vital indicators of climate variability and change, yet while the Arctic shows overall warming and dramatic changes in snow and ice cover, the response of these high-latitude regions to recent climatic change varies regionally. Although previous studies have examined changing snow and ice separately, examining phenology changes across multiple components of the cryosphere together is important for understanding how these components and their response to climate forcing are interconnected. In this work, we examine recent changes in sea ice, lake ice, and snow together at the pan-Arctic scale using the Interactive Multisensor Snow and Ice Mapping System 24 km product from 1997–2019, with a more detailed regional examination from 2004–2019 using the 4 km product. We show overall that for sea ice, trends toward earlier open water ( −7.7 d per decade, p <0.05 ) and later final freeze (10.6 d per decade, p <0.05 ) are evident. Trends toward earlier first snow-off ( −4.9 d per decade, p <0.05 ), combined with trends toward earlier first snow-on ( −2.8 d per decade, p <0.05 ), lead to almost no change in the length of the snow-free season, despite shifting earlier in the year. Sea ice-off, lake ice-off, and snow-off parameters were significantly correlated, with stronger correlations during the snow-off and ice-off season compared to the snow-on and ice-on season. Regionally, the Bering and Chukchi seas show the most pronounced response to warming, with the strongest trends identified toward earlier ice-off and later ice-on. This is consistent with earlier snow-off and lake ice-off and later snow-on and lake ice-on in west and southwest Alaska. In contrast to this, significant clustering between sea ice, lake ice, and snow-on trends in the eastern portion of the North American Arctic shows an earlier return of snow and ice. The marked regional variability in snow and ice phenology across the pan-Arctic highlights the complex relationships between snow and ice, as well as their ... Article in Journal/Newspaper Arctic Chukchi Sea ice The Cryosphere Alaska Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 15 10 4781 4805 |
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 A. A. Dauginis L. C. Brown Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Arctic snow and ice cover are vital indicators of climate variability and change, yet while the Arctic shows overall warming and dramatic changes in snow and ice cover, the response of these high-latitude regions to recent climatic change varies regionally. Although previous studies have examined changing snow and ice separately, examining phenology changes across multiple components of the cryosphere together is important for understanding how these components and their response to climate forcing are interconnected. In this work, we examine recent changes in sea ice, lake ice, and snow together at the pan-Arctic scale using the Interactive Multisensor Snow and Ice Mapping System 24 km product from 1997–2019, with a more detailed regional examination from 2004–2019 using the 4 km product. We show overall that for sea ice, trends toward earlier open water ( −7.7 d per decade, p <0.05 ) and later final freeze (10.6 d per decade, p <0.05 ) are evident. Trends toward earlier first snow-off ( −4.9 d per decade, p <0.05 ), combined with trends toward earlier first snow-on ( −2.8 d per decade, p <0.05 ), lead to almost no change in the length of the snow-free season, despite shifting earlier in the year. Sea ice-off, lake ice-off, and snow-off parameters were significantly correlated, with stronger correlations during the snow-off and ice-off season compared to the snow-on and ice-on season. Regionally, the Bering and Chukchi seas show the most pronounced response to warming, with the strongest trends identified toward earlier ice-off and later ice-on. This is consistent with earlier snow-off and lake ice-off and later snow-on and lake ice-on in west and southwest Alaska. In contrast to this, significant clustering between sea ice, lake ice, and snow-on trends in the eastern portion of the North American Arctic shows an earlier return of snow and ice. The marked regional variability in snow and ice phenology across the pan-Arctic highlights the complex relationships between snow and ice, as well as their ... |
format |
Article in Journal/Newspaper |
author |
A. A. Dauginis L. C. Brown |
author_facet |
A. A. Dauginis L. C. Brown |
author_sort |
A. A. Dauginis |
title |
Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
title_short |
Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
title_full |
Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
title_fullStr |
Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
title_full_unstemmed |
Recent changes in pan-Arctic sea ice, lake ice, and snow-on/off timing |
title_sort |
recent changes in pan-arctic sea ice, lake ice, and snow-on/off timing |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-4781-2021 https://doaj.org/article/603450c65938475ea04fd129ec1c5be6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Chukchi Sea ice The Cryosphere Alaska |
genre_facet |
Arctic Chukchi Sea ice The Cryosphere Alaska |
op_source |
The Cryosphere, Vol 15, Pp 4781-4805 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/4781/2021/tc-15-4781-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-4781-2021 1994-0416 1994-0424 https://doaj.org/article/603450c65938475ea04fd129ec1c5be6 |
op_doi |
https://doi.org/10.5194/tc-15-4781-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
10 |
container_start_page |
4781 |
op_container_end_page |
4805 |
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1766319790184464384 |