On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland
This is the final version of the article. Available from AGU via the DOI in this record. We have used Radar Altimeter 2 (RA-2) onboard ESA's EnviSAT and Geosciences Laser Altimeter System (GLAS) onboard NASA's ICESat to map the elevation change of the Flade Isblink Ice Cap (FIIC) in northe...
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American Geophysical Union (AGU) / Wiley
2011
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Online Access: | http://hdl.handle.net/10871/30238 https://doi.org/10.1029/2011JF001972 |
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ftunivexeter:oai:ore.exeter.ac.uk:10871/30238 2024-09-15T18:07:46+00:00 On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland Rinne, EJ Shepherd, A Palmer, S Van Den Broeke, MR Muir, A Ettema, J Wingham, D 2011 http://hdl.handle.net/10871/30238 https://doi.org/10.1029/2011JF001972 en eng American Geophysical Union (AGU) / Wiley Vol. 116 (F3), article F03024 doi:10.1029/2011JF001972 http://hdl.handle.net/10871/30238 Journal of Geophysical Research: Earth Surface Copyright 2011 by the American Geophysical Union. altimetry ice cap mass balance Article 2011 ftunivexeter https://doi.org/10.1029/2011JF001972 2024-07-29T03:24:15Z This is the final version of the article. Available from AGU via the DOI in this record. We have used Radar Altimeter 2 (RA-2) onboard ESA's EnviSAT and Geosciences Laser Altimeter System (GLAS) onboard NASA's ICESat to map the elevation change of the Flade Isblink Ice Cap (FIIC) in northern Greenland. Based on RA-2 data we show that the mean surface elevation change of the FIIC has been near zero (0.03±0.03 m/a) between fall 2002 and fall 2009. We present the elevation change rate maps and assess the elevation change rates of areas above the late summer snow line (0.09±0.04 m/a) and below it (-0.16±0.05 m/a). The GLAS elevation change rate maps show that some outlet glaciers, previously reported to have been in a surge state, are thickening rapidly. Using the RA-2 measured average elevation change rates for different parts of the ice cap we present a mass change rate estimate of 0.0±0.5 Gt/a for the FIIC. We compare the annual elevation changes with surface mass balance (SMB) estimates from a regional atmospheric climate model RACMO2. We find a strong correlation between the two (R = 0.94 and P < 0.002), suggesting that the surface elevation changes of the FIIC are mainly driven by net SMB. The correlation of modeled net SMB and measured elevation change is strong in the southern areas of the FIIC (R = 0.97 and P < 0.0005), but insignificant in the northern areas (R = 0.38 and P = 0.40). This is likely due to higher variability of glacier flow in the north relative to the south. Copyright 2011 by the American Geophysical Union. Article in Journal/Newspaper glacier Greenland Ice cap University of Exeter: Open Research Exeter (ORE) Journal of Geophysical Research 116 F3 |
institution |
Open Polar |
collection |
University of Exeter: Open Research Exeter (ORE) |
op_collection_id |
ftunivexeter |
language |
English |
topic |
altimetry ice cap mass balance |
spellingShingle |
altimetry ice cap mass balance Rinne, EJ Shepherd, A Palmer, S Van Den Broeke, MR Muir, A Ettema, J Wingham, D On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
topic_facet |
altimetry ice cap mass balance |
description |
This is the final version of the article. Available from AGU via the DOI in this record. We have used Radar Altimeter 2 (RA-2) onboard ESA's EnviSAT and Geosciences Laser Altimeter System (GLAS) onboard NASA's ICESat to map the elevation change of the Flade Isblink Ice Cap (FIIC) in northern Greenland. Based on RA-2 data we show that the mean surface elevation change of the FIIC has been near zero (0.03±0.03 m/a) between fall 2002 and fall 2009. We present the elevation change rate maps and assess the elevation change rates of areas above the late summer snow line (0.09±0.04 m/a) and below it (-0.16±0.05 m/a). The GLAS elevation change rate maps show that some outlet glaciers, previously reported to have been in a surge state, are thickening rapidly. Using the RA-2 measured average elevation change rates for different parts of the ice cap we present a mass change rate estimate of 0.0±0.5 Gt/a for the FIIC. We compare the annual elevation changes with surface mass balance (SMB) estimates from a regional atmospheric climate model RACMO2. We find a strong correlation between the two (R = 0.94 and P < 0.002), suggesting that the surface elevation changes of the FIIC are mainly driven by net SMB. The correlation of modeled net SMB and measured elevation change is strong in the southern areas of the FIIC (R = 0.97 and P < 0.0005), but insignificant in the northern areas (R = 0.38 and P = 0.40). This is likely due to higher variability of glacier flow in the north relative to the south. Copyright 2011 by the American Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Rinne, EJ Shepherd, A Palmer, S Van Den Broeke, MR Muir, A Ettema, J Wingham, D |
author_facet |
Rinne, EJ Shepherd, A Palmer, S Van Den Broeke, MR Muir, A Ettema, J Wingham, D |
author_sort |
Rinne, EJ |
title |
On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
title_short |
On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
title_full |
On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
title_fullStr |
On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
title_full_unstemmed |
On the recent elevation changes at the Flade Isblink Ice Cap, northern Greenland |
title_sort |
on the recent elevation changes at the flade isblink ice cap, northern greenland |
publisher |
American Geophysical Union (AGU) / Wiley |
publishDate |
2011 |
url |
http://hdl.handle.net/10871/30238 https://doi.org/10.1029/2011JF001972 |
genre |
glacier Greenland Ice cap |
genre_facet |
glacier Greenland Ice cap |
op_relation |
Vol. 116 (F3), article F03024 doi:10.1029/2011JF001972 http://hdl.handle.net/10871/30238 Journal of Geophysical Research: Earth Surface |
op_rights |
Copyright 2011 by the American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2011JF001972 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
F3 |
_version_ |
1810445144492605440 |