Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques
© 2014. American Geophysical Union. All Rights Reserved. We compare four independent estimates of the mass balance of the Amundsen Sea Embayment of West Antarctica, an area experiencing rapid retreat and mass loss to the sea. We use ICESat and Operation IceBridge laser altimetry, Envisat radar altim...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
eScholarship, University of California
2014
|
Subjects: | |
Online Access: | http://www.escholarship.org/uc/item/4qz1s1mn |
id |
ftcdlib:qt4qz1s1mn |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:qt4qz1s1mn 2023-05-15T13:23:48+02:00 Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques Sutterley, TC Velicogna, I Rignot, E Mouginot, J Flament, T Van Den Broeke, MR Van Wessem, JM Reijmer, CH 8421 - 8428 2014-12-16 application/pdf http://www.escholarship.org/uc/item/4qz1s1mn english eng eScholarship, University of California qt4qz1s1mn http://www.escholarship.org/uc/item/4qz1s1mn Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Sutterley, TC; Velicogna, I; Rignot, E; Mouginot, J; Flament, T; Van Den Broeke, MR; et al.(2014). Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques. Geophysical Research Letters, 41(23), 8421 - 8428. doi:10.1002/2014GL061940. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4qz1s1mn article 2014 ftcdlib https://doi.org/10.1002/2014GL061940 2018-06-22T22:52:04Z © 2014. American Geophysical Union. All Rights Reserved. We compare four independent estimates of the mass balance of the Amundsen Sea Embayment of West Antarctica, an area experiencing rapid retreat and mass loss to the sea. We use ICESat and Operation IceBridge laser altimetry, Envisat radar altimetry, GRACE time-variable gravity, RACMO2.3 surface mass balance, ice velocity from imaging radars, and ice thickness from radar sounders. The four methods agree in terms of mass loss and acceleration in loss at the regional scale. Over 1992-2013, the mass loss is 83 ± 5 Gt/yr with an acceleration of 6.1 ± 0.7 Gt/yr 2 . During the common period 2003-2009, the mass loss is 84 ± 10 Gt/yr with an acceleration of 16.3 ± 5.6 Gt/yr 2 , nearly 3 times the acceleration over 1992-2013. Over 2003-2011, the mass loss is 102 ± 10 Gt/yr with an acceleration of 15.7 ± 4.0 Gt/yr 2 . The results reconcile independent mass balance estimates in a setting dominated by change in ice dynamics with significant variability in surface mass balance. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica West Antarctica University of California: eScholarship Amundsen Sea West Antarctica Geophysical Research Letters 41 23 8421 8428 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
description |
© 2014. American Geophysical Union. All Rights Reserved. We compare four independent estimates of the mass balance of the Amundsen Sea Embayment of West Antarctica, an area experiencing rapid retreat and mass loss to the sea. We use ICESat and Operation IceBridge laser altimetry, Envisat radar altimetry, GRACE time-variable gravity, RACMO2.3 surface mass balance, ice velocity from imaging radars, and ice thickness from radar sounders. The four methods agree in terms of mass loss and acceleration in loss at the regional scale. Over 1992-2013, the mass loss is 83 ± 5 Gt/yr with an acceleration of 6.1 ± 0.7 Gt/yr 2 . During the common period 2003-2009, the mass loss is 84 ± 10 Gt/yr with an acceleration of 16.3 ± 5.6 Gt/yr 2 , nearly 3 times the acceleration over 1992-2013. Over 2003-2011, the mass loss is 102 ± 10 Gt/yr with an acceleration of 15.7 ± 4.0 Gt/yr 2 . The results reconcile independent mass balance estimates in a setting dominated by change in ice dynamics with significant variability in surface mass balance. |
format |
Article in Journal/Newspaper |
author |
Sutterley, TC Velicogna, I Rignot, E Mouginot, J Flament, T Van Den Broeke, MR Van Wessem, JM Reijmer, CH |
spellingShingle |
Sutterley, TC Velicogna, I Rignot, E Mouginot, J Flament, T Van Den Broeke, MR Van Wessem, JM Reijmer, CH Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
author_facet |
Sutterley, TC Velicogna, I Rignot, E Mouginot, J Flament, T Van Den Broeke, MR Van Wessem, JM Reijmer, CH |
author_sort |
Sutterley, TC |
title |
Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
title_short |
Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
title_full |
Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
title_fullStr |
Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
title_full_unstemmed |
Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques |
title_sort |
mass loss of the amundsen sea embayment of west antarctica from four independent techniques |
publisher |
eScholarship, University of California |
publishDate |
2014 |
url |
http://www.escholarship.org/uc/item/4qz1s1mn |
op_coverage |
8421 - 8428 |
geographic |
Amundsen Sea West Antarctica |
geographic_facet |
Amundsen Sea West Antarctica |
genre |
Amundsen Sea Antarc* Antarctica West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica West Antarctica |
op_source |
Sutterley, TC; Velicogna, I; Rignot, E; Mouginot, J; Flament, T; Van Den Broeke, MR; et al.(2014). Mass loss of the Amundsen Sea Embayment of West Antarctica from four independent techniques. Geophysical Research Letters, 41(23), 8421 - 8428. doi:10.1002/2014GL061940. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4qz1s1mn |
op_relation |
qt4qz1s1mn http://www.escholarship.org/uc/item/4qz1s1mn |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/2014GL061940 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
23 |
container_start_page |
8421 |
op_container_end_page |
8428 |
_version_ |
1766375456269926400 |