Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559
This study focuses on the present-day surface elevation of the Greenland and Antarctic ice sheets. Based on 3 years of CryoSat-2 data acquisition we derived new elevation models (DEMs) as well as elevation change maps and volume change estimates for both ice sheets. Here we present the new DEMs and...
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ftdatacite:10.1594/pangaea.831394 2023-05-15T14:05:24+02:00 Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 Helm, Veit Humbert, Angelika Miller, Heinz 2014 application/zip https://dx.doi.org/10.1594/pangaea.831394 https://doi.pangaea.de/10.1594/PANGAEA.831394 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.5194/tc-8-1539-2014 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY article Supplementary Collection of Datasets Collection 2014 ftdatacite https://doi.org/10.1594/pangaea.831394 https://doi.org/10.5194/tc-8-1539-2014 2022-02-09T13:17:41Z This study focuses on the present-day surface elevation of the Greenland and Antarctic ice sheets. Based on 3 years of CryoSat-2 data acquisition we derived new elevation models (DEMs) as well as elevation change maps and volume change estimates for both ice sheets. Here we present the new DEMs and their corresponding error maps. The accuracy of the derived DEMs for Greenland and Antarctica is similar to those of previous DEMs obtained by satellite-based laser and radar altimeters. Comparisons with ICESat data show that 80% of the CryoSat-2 DEMs have an uncertainty of less than 3 m ± 15 m. The surface elevation change rates between January 2011 and January 2014 are presented for both ice sheets. We compared our results to elevation change rates obtained from ICESat data covering the time period from 2003 to 2009. The comparison reveals that in West Antarctica the volume loss has increased by a factor of 3. It also shows an anomalous thickening in Dronning Maud Land, East Antarctica which represents a known large-scale accumulation event. This anomaly partly compensates for the observed increased volume loss of the Antarctic Peninsula and West Antarctica. For Greenland we find a volume loss increased by a factor of 2.5 compared to the ICESat period with large negative elevation changes concentrated at the west and southeast coasts. The combined volume change of Greenland and Antarctica for the observation period is estimated to be -503 ± 107 km**3/yr. Greenland contributes nearly 75% to the total volume change with -375 ± 24 km**3/yr. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Greenland West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Antarctic Peninsula East Antarctica Dronning Maud Land West Antarctica Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
This study focuses on the present-day surface elevation of the Greenland and Antarctic ice sheets. Based on 3 years of CryoSat-2 data acquisition we derived new elevation models (DEMs) as well as elevation change maps and volume change estimates for both ice sheets. Here we present the new DEMs and their corresponding error maps. The accuracy of the derived DEMs for Greenland and Antarctica is similar to those of previous DEMs obtained by satellite-based laser and radar altimeters. Comparisons with ICESat data show that 80% of the CryoSat-2 DEMs have an uncertainty of less than 3 m ± 15 m. The surface elevation change rates between January 2011 and January 2014 are presented for both ice sheets. We compared our results to elevation change rates obtained from ICESat data covering the time period from 2003 to 2009. The comparison reveals that in West Antarctica the volume loss has increased by a factor of 3. It also shows an anomalous thickening in Dronning Maud Land, East Antarctica which represents a known large-scale accumulation event. This anomaly partly compensates for the observed increased volume loss of the Antarctic Peninsula and West Antarctica. For Greenland we find a volume loss increased by a factor of 2.5 compared to the ICESat period with large negative elevation changes concentrated at the west and southeast coasts. The combined volume change of Greenland and Antarctica for the observation period is estimated to be -503 ± 107 km**3/yr. Greenland contributes nearly 75% to the total volume change with -375 ± 24 km**3/yr. |
format |
Article in Journal/Newspaper |
author |
Helm, Veit Humbert, Angelika Miller, Heinz |
spellingShingle |
Helm, Veit Humbert, Angelika Miller, Heinz Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
author_facet |
Helm, Veit Humbert, Angelika Miller, Heinz |
author_sort |
Helm, Veit |
title |
Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
title_short |
Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
title_full |
Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
title_fullStr |
Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
title_full_unstemmed |
Elevation Models of Antarctica and Greenland derived from CryoSat-2 in the period 2011 to 2013, supplement to: Helm, Veit; Humbert, Angelika; Miller, Heinz (2014): Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559 |
title_sort |
elevation models of antarctica and greenland derived from cryosat-2 in the period 2011 to 2013, supplement to: helm, veit; humbert, angelika; miller, heinz (2014): elevation and elevation change of greenland and antarctica derived from cryosat-2. the cryosphere, 8(4), 1539-1559 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.831394 https://doi.pangaea.de/10.1594/PANGAEA.831394 |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Dronning Maud Land West Antarctica Greenland |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Dronning Maud Land West Antarctica Greenland |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Greenland West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dronning Maud Land East Antarctica Greenland West Antarctica |
op_relation |
https://dx.doi.org/10.5194/tc-8-1539-2014 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.831394 https://doi.org/10.5194/tc-8-1539-2014 |
_version_ |
1766277288936079360 |