Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements
Mass balance estimates for 2003-2008 are derived from ICESat laser altimetry and compared with estimates for 1992-2002 derived from ERS radar altimetry. The net mass balance of 3 drainage systems (Pine Island, Thwaites/Smith, and the coast of Marie Bryd) for 2003-2008 is a loss of 100 Gt/yr, which i...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20120002312 2023-05-15T13:43:16+02:00 Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements Zwally, H. Jay Saba, Jack L. Robins, John Yi, Donghui Li, Jun Unclassified, Unlimited, Publicly available September 21, 2011 application/pdf http://hdl.handle.net/2060/20120002312 unknown Document ID: 20120002312 http://hdl.handle.net/2060/20120002312 No Copyright CASI Geosciences (General) gsfc.cpr.5606.2011 18th West Antarctic Ice Sheet (WAIS) Workshop; 21-23 Sep. 2011; Loveland, CO; United States 2011 ftnasantrs 2019-07-21T00:54:41Z Mass balance estimates for 2003-2008 are derived from ICESat laser altimetry and compared with estimates for 1992-2002 derived from ERS radar altimetry. The net mass balance of 3 drainage systems (Pine Island, Thwaites/Smith, and the coast of Marie Bryd) for 2003-2008 is a loss of 100 Gt/yr, which increased from a loss of 70 Gt/yr for the earlier period. The DS including the Bindschadler and MacAyeal ice streams draining into the Ross Ice Shelf has a mass gain of 11 Gt/yr for 2003-2008, compared to an earlier loss of 70 Gt/yr. The DS including the Whillans and Kamb ice streams has a mass gain of 12 Gt/yr, including a significant thickening on the upper part of the Kamb DS, compared to a earlier gain of 6 Gt/yr (includes interpolation for a large portion of the DS). The other two DS discharging into the Ronne Ice Shelf and the northern Ellsworth Coast have a mass gain of 39 Gt/yr, compared to a gain of 4 Gt/yr for the earlier period. Overall, the increased losses of 30 Gt/yr in the Pine Island, Thwaites/Smith, and the coast of Marie Bryd DSs are exceeded by increased gains of 59 Gt/yr in the other 4 DS. Overall, the mass loss from the West Antarctic ice sheet has decreased to 38 Gt/yr from the earlier loss of 67 Gt/yr, reducing the contribution to sea level rise to 0.11 mm/yr from 0.19 mm/yr Other/Unknown Material Antarc* Antarctic Ice Sheet Ice Shelf Ronne Ice Shelf Ross Ice Shelf NASA Technical Reports Server (NTRS) Antarctic West Antarctic Ice Sheet Ross Ice Shelf Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Whillans ENVELOPE(-64.250,-64.250,-84.450,-84.450) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Geosciences (General) |
spellingShingle |
Geosciences (General) Zwally, H. Jay Saba, Jack L. Robins, John Yi, Donghui Li, Jun Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
topic_facet |
Geosciences (General) |
description |
Mass balance estimates for 2003-2008 are derived from ICESat laser altimetry and compared with estimates for 1992-2002 derived from ERS radar altimetry. The net mass balance of 3 drainage systems (Pine Island, Thwaites/Smith, and the coast of Marie Bryd) for 2003-2008 is a loss of 100 Gt/yr, which increased from a loss of 70 Gt/yr for the earlier period. The DS including the Bindschadler and MacAyeal ice streams draining into the Ross Ice Shelf has a mass gain of 11 Gt/yr for 2003-2008, compared to an earlier loss of 70 Gt/yr. The DS including the Whillans and Kamb ice streams has a mass gain of 12 Gt/yr, including a significant thickening on the upper part of the Kamb DS, compared to a earlier gain of 6 Gt/yr (includes interpolation for a large portion of the DS). The other two DS discharging into the Ronne Ice Shelf and the northern Ellsworth Coast have a mass gain of 39 Gt/yr, compared to a gain of 4 Gt/yr for the earlier period. Overall, the increased losses of 30 Gt/yr in the Pine Island, Thwaites/Smith, and the coast of Marie Bryd DSs are exceeded by increased gains of 59 Gt/yr in the other 4 DS. Overall, the mass loss from the West Antarctic ice sheet has decreased to 38 Gt/yr from the earlier loss of 67 Gt/yr, reducing the contribution to sea level rise to 0.11 mm/yr from 0.19 mm/yr |
format |
Other/Unknown Material |
author |
Zwally, H. Jay Saba, Jack L. Robins, John Yi, Donghui Li, Jun |
author_facet |
Zwally, H. Jay Saba, Jack L. Robins, John Yi, Donghui Li, Jun |
author_sort |
Zwally, H. Jay |
title |
Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
title_short |
Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
title_full |
Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
title_fullStr |
Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
title_full_unstemmed |
Mass Balance of the West Antarctic Ice-Sheet from ICESat Measurements |
title_sort |
mass balance of the west antarctic ice-sheet from icesat measurements |
publishDate |
2011 |
url |
http://hdl.handle.net/2060/20120002312 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-64.250,-64.250,-84.450,-84.450) |
geographic |
Antarctic West Antarctic Ice Sheet Ross Ice Shelf Ronne Ice Shelf Whillans |
geographic_facet |
Antarctic West Antarctic Ice Sheet Ross Ice Shelf Ronne Ice Shelf Whillans |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Ronne Ice Shelf Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Ronne Ice Shelf Ross Ice Shelf |
op_source |
CASI |
op_relation |
Document ID: 20120002312 http://hdl.handle.net/2060/20120002312 |
op_rights |
No Copyright |
_version_ |
1766186456732139520 |