Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014
Grinnell and Terra Nivea Ice Caps are located onthe southern Baffin Island, Nunavut, in the Canadian Arctic Archipelago. These relatively small ice caps have received little attention compared to the much larger ice masses further north. Their evolution can, however, give valuable information about...
Published in: | The Cryosphere |
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Uppsala universitet, Luft-, vatten- och landskapslära
2015
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ftuppsalauniv:oai:DiVA.org:uu-263010 2023-05-15T14:28:49+02:00 Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 Papasodoro, Charles Berthier, Étienne Royer, Alain Zdanowicz, Christian Langlois, Alexandre 2015 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-263010 https://doi.org/10.5194/tc-9-1535-2015 eng eng Uppsala universitet, Luft-, vatten- och landskapslära Université de Sherbrooke, Sherbrooke, Québec, Canada 3Laboratoire d’Etudes en Géophysique et Océanographie Spatiales, Centre National de la Recherche Scientifique, Toulouse, France 1Centre d’Applications et de Recherches en Télédétection, Université de Sherbrooke, Sherbrooke, Québec, Canada The Cryosphere, 1994-0416, 2015, 9, s. 1535-1550 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-263010 doi:10.5194/tc-9-1535-2015 ISI:000360661700014 info:eu-repo/semantics/openAccess Glaciers Arctic Remote sensing Canada Physical Geography Naturgeografi Article in journal info:eu-repo/semantics/article text 2015 ftuppsalauniv https://doi.org/10.5194/tc-9-1535-2015 2023-02-23T21:52:08Z Grinnell and Terra Nivea Ice Caps are located onthe southern Baffin Island, Nunavut, in the Canadian Arctic Archipelago. These relatively small ice caps have received little attention compared to the much larger ice masses further north. Their evolution can, however, give valuable information about the impact of the recent Arctic warming at lower latitudes (i.e. ∼62.5◦ N). In this paper, we measure or estimate historical and recent changes of area, elevation and mass of both ice caps using in situ, airborne and spaceborne data sets, including imagery from the Pléiades satellites. The area of Terra Nivea Ice Cap has decreased by 34 % since the late 1950s, while that of Grinnell Ice Cap has decreased by 20 % since 1952. For both ice caps, the areal reduction accelerated at the beginning of the 21st century. The estimated glacier-wide mass balance was−0.37 ± 0.21 m a^−1 water equivalent (w.e.) over Grinnell Ice Cap for the 1952–2014 period, and −0.47 ± 0.16 m a^−1 w.e. over Terra Nivea Ice Cap for the 1958/59–2014 period. Terra Nivea Ice Cap has experienced an accelerated rate of mass loss of −1.77 ± 0.36 m a^−1 w.e. between 2007 and 2014.This rate is 5.9 times as negative when compared to the 1958/59–2007 period (−0.30 ± 0.19 m a^−1 w.e.) and 2 times as negative when compared to the mass balance of other glaciers in the southern parts of Baffin Island over the 2003– 2009 period. A similar acceleration in mass loss is sus-pected for the Grinnell Ice Cap, given the calculated elevation changes and the proximity to Terra Nivea Ice Cap. The recent increase in mass loss rates for these two ice caps is linked to a strong near-surface regional warming and a lengthening of the melt season into the autumn that may beindirectly strengthened by a later freezing of sea ice in the Hudson Strait sector. On a methodological level, our study illustrates the strong potential of Pléiades satellite data to unlock the underexploited archive of old aerial photographs. Article in Journal/Newspaper Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago glacier* Hudson Strait Ice cap Nunavut Sea ice The Cryosphere Uppsala University: Publications (DiVA) Arctic Baffin Island Canada Canadian Arctic Archipelago Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) Nunavut Terra Nivea ENVELOPE(-66.514,-66.514,62.275,62.275) The Cryosphere 9 4 1535 1550 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Glaciers Arctic Remote sensing Canada Physical Geography Naturgeografi |
spellingShingle |
Glaciers Arctic Remote sensing Canada Physical Geography Naturgeografi Papasodoro, Charles Berthier, Étienne Royer, Alain Zdanowicz, Christian Langlois, Alexandre Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
topic_facet |
Glaciers Arctic Remote sensing Canada Physical Geography Naturgeografi |
description |
Grinnell and Terra Nivea Ice Caps are located onthe southern Baffin Island, Nunavut, in the Canadian Arctic Archipelago. These relatively small ice caps have received little attention compared to the much larger ice masses further north. Their evolution can, however, give valuable information about the impact of the recent Arctic warming at lower latitudes (i.e. ∼62.5◦ N). In this paper, we measure or estimate historical and recent changes of area, elevation and mass of both ice caps using in situ, airborne and spaceborne data sets, including imagery from the Pléiades satellites. The area of Terra Nivea Ice Cap has decreased by 34 % since the late 1950s, while that of Grinnell Ice Cap has decreased by 20 % since 1952. For both ice caps, the areal reduction accelerated at the beginning of the 21st century. The estimated glacier-wide mass balance was−0.37 ± 0.21 m a^−1 water equivalent (w.e.) over Grinnell Ice Cap for the 1952–2014 period, and −0.47 ± 0.16 m a^−1 w.e. over Terra Nivea Ice Cap for the 1958/59–2014 period. Terra Nivea Ice Cap has experienced an accelerated rate of mass loss of −1.77 ± 0.36 m a^−1 w.e. between 2007 and 2014.This rate is 5.9 times as negative when compared to the 1958/59–2007 period (−0.30 ± 0.19 m a^−1 w.e.) and 2 times as negative when compared to the mass balance of other glaciers in the southern parts of Baffin Island over the 2003– 2009 period. A similar acceleration in mass loss is sus-pected for the Grinnell Ice Cap, given the calculated elevation changes and the proximity to Terra Nivea Ice Cap. The recent increase in mass loss rates for these two ice caps is linked to a strong near-surface regional warming and a lengthening of the melt season into the autumn that may beindirectly strengthened by a later freezing of sea ice in the Hudson Strait sector. On a methodological level, our study illustrates the strong potential of Pléiades satellite data to unlock the underexploited archive of old aerial photographs. |
format |
Article in Journal/Newspaper |
author |
Papasodoro, Charles Berthier, Étienne Royer, Alain Zdanowicz, Christian Langlois, Alexandre |
author_facet |
Papasodoro, Charles Berthier, Étienne Royer, Alain Zdanowicz, Christian Langlois, Alexandre |
author_sort |
Papasodoro, Charles |
title |
Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
title_short |
Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
title_full |
Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
title_fullStr |
Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
title_full_unstemmed |
Area, elevation and mass changes of the two southernmost ice caps of the Canadian Arctic Archipelago between 1952 and 2014 |
title_sort |
area, elevation and mass changes of the two southernmost ice caps of the canadian arctic archipelago between 1952 and 2014 |
publisher |
Uppsala universitet, Luft-, vatten- och landskapslära |
publishDate |
2015 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-263010 https://doi.org/10.5194/tc-9-1535-2015 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-45.479,-45.479,-60.580,-60.580) ENVELOPE(-66.514,-66.514,62.275,62.275) |
geographic |
Arctic Baffin Island Canada Canadian Arctic Archipelago Hudson Hudson Strait Nivea Nunavut Terra Nivea |
geographic_facet |
Arctic Baffin Island Canada Canadian Arctic Archipelago Hudson Hudson Strait Nivea Nunavut Terra Nivea |
genre |
Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago glacier* Hudson Strait Ice cap Nunavut Sea ice The Cryosphere |
genre_facet |
Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago glacier* Hudson Strait Ice cap Nunavut Sea ice The Cryosphere |
op_relation |
The Cryosphere, 1994-0416, 2015, 9, s. 1535-1550 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-263010 doi:10.5194/tc-9-1535-2015 ISI:000360661700014 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-1535-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1535 |
op_container_end_page |
1550 |
_version_ |
1766302967339679744 |