Irreversible mass loss of Canadian Arctic Archipelago glaciers
The Canadian Arctic Archipelago (CAA) contains the largest volume of glacier ice on Earth outside of Antarctica and Greenland. In the absence of significant calving, CAA glacier mass balance is governed by the difference between surface snow accumulation and meltwater runoff—surface mass balance. He...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/275779 2023-07-23T04:15:50+02:00 Irreversible mass loss of Canadian Arctic Archipelago glaciers Lenaerts, J.T.M. van Angelen, J.H. van den Broeke, M.R. Gardner, A.S. Wouters, Bert van Meijgaard, E. Marine and Atmospheric Research Sub Dynamics Meteorology 2013 image/pdf https://dspace.library.uu.nl/handle/1874/275779 en eng 0094-8276 https://dspace.library.uu.nl/handle/1874/275779 info:eu-repo/semantics/OpenAccess Article 2013 ftunivutrecht 2023-07-02T00:41:24Z The Canadian Arctic Archipelago (CAA) contains the largest volume of glacier ice on Earth outside of Antarctica and Greenland. In the absence of significant calving, CAA glacier mass balance is governed by the difference between surface snow accumulation and meltwater runoff—surface mass balance. Here we use a coupled atmosphere/snow model to simulate present-day and 21st century CAA glacier surface mass balance. Through comparison with Gravity Recovery and Climate Experiment mass anomalies and in situ observations, we show that the model is capable of representing present-day CAA glacier mass loss, as well as the dynamics of the seasonal snow cover on the CAA tundra. Next, we force this model until 2100 with a moderate climate warming scenario (AR5 RCP4.5). We show that enhanced meltwater runoff from CAA glaciers is not sufficiently compensated by increased snowfall. Extrapolation of these results toward an AR5 multimodel ensemble results in sustained 21st century CAA glacier mass loss in the vast majority (>99%) of the ~7000 temperature realizations. Article in Journal/Newspaper Antarc* Antarctica Arctic Archipelago Arctic Canadian Arctic Archipelago glacier Greenland Tundra Utrecht University Repository Arctic Canadian Arctic Archipelago Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
The Canadian Arctic Archipelago (CAA) contains the largest volume of glacier ice on Earth outside of Antarctica and Greenland. In the absence of significant calving, CAA glacier mass balance is governed by the difference between surface snow accumulation and meltwater runoff—surface mass balance. Here we use a coupled atmosphere/snow model to simulate present-day and 21st century CAA glacier surface mass balance. Through comparison with Gravity Recovery and Climate Experiment mass anomalies and in situ observations, we show that the model is capable of representing present-day CAA glacier mass loss, as well as the dynamics of the seasonal snow cover on the CAA tundra. Next, we force this model until 2100 with a moderate climate warming scenario (AR5 RCP4.5). We show that enhanced meltwater runoff from CAA glaciers is not sufficiently compensated by increased snowfall. Extrapolation of these results toward an AR5 multimodel ensemble results in sustained 21st century CAA glacier mass loss in the vast majority (>99%) of the ~7000 temperature realizations. |
author2 |
Marine and Atmospheric Research Sub Dynamics Meteorology |
format |
Article in Journal/Newspaper |
author |
Lenaerts, J.T.M. van Angelen, J.H. van den Broeke, M.R. Gardner, A.S. Wouters, Bert van Meijgaard, E. |
spellingShingle |
Lenaerts, J.T.M. van Angelen, J.H. van den Broeke, M.R. Gardner, A.S. Wouters, Bert van Meijgaard, E. Irreversible mass loss of Canadian Arctic Archipelago glaciers |
author_facet |
Lenaerts, J.T.M. van Angelen, J.H. van den Broeke, M.R. Gardner, A.S. Wouters, Bert van Meijgaard, E. |
author_sort |
Lenaerts, J.T.M. |
title |
Irreversible mass loss of Canadian Arctic Archipelago glaciers |
title_short |
Irreversible mass loss of Canadian Arctic Archipelago glaciers |
title_full |
Irreversible mass loss of Canadian Arctic Archipelago glaciers |
title_fullStr |
Irreversible mass loss of Canadian Arctic Archipelago glaciers |
title_full_unstemmed |
Irreversible mass loss of Canadian Arctic Archipelago glaciers |
title_sort |
irreversible mass loss of canadian arctic archipelago glaciers |
publishDate |
2013 |
url |
https://dspace.library.uu.nl/handle/1874/275779 |
geographic |
Arctic Canadian Arctic Archipelago Greenland |
geographic_facet |
Arctic Canadian Arctic Archipelago Greenland |
genre |
Antarc* Antarctica Arctic Archipelago Arctic Canadian Arctic Archipelago glacier Greenland Tundra |
genre_facet |
Antarc* Antarctica Arctic Archipelago Arctic Canadian Arctic Archipelago glacier Greenland Tundra |
op_relation |
0094-8276 https://dspace.library.uu.nl/handle/1874/275779 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772176912328687616 |