Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution
We have determined the ice mass evolution of the Antarctica and Greenland ice sheets (AIS and GIS) and Gulf of Alaska (GOA) glaciers from a new GRACE global solution of equal-area surface mass concentration parcels (mascons) in equivalent height of water. The mascons were estimated directly from the...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20160003526 2023-05-15T13:35:23+02:00 Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution Camp, J. McCarthy, J. J. Arendt, A. A. Loomis, B. D. Luthcke, Scott B. Sabaka, T. J. Unclassified, Unlimited, Publicly available August 2013 application/pdf http://hdl.handle.net/2060/20160003526 unknown Document ID: 20160003526 http://hdl.handle.net/2060/20160003526 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing Meteorology and Climatology GSFC-E-DAA-TN30292 Journal of Glaciology (e-ISSN 1727-5652); 59; 216; 613-631 2013 ftnasantrs 2019-07-20T23:55:39Z We have determined the ice mass evolution of the Antarctica and Greenland ice sheets (AIS and GIS) and Gulf of Alaska (GOA) glaciers from a new GRACE global solution of equal-area surface mass concentration parcels (mascons) in equivalent height of water. The mascons were estimated directly from the reduction of the inter-satellite K-band range-rate (KBRR) observations, taking into account the full noise covariance, and formally iterating the solution. The new solution increases signal recovery while reducing the GRACE KBRR observation residuals. The mascons were estimated with 10 day and 1 arc degree equal-area sampling, applying anisotropic constraints. An ensemble empirical mode decomposition adaptive filter was applied to the mascon time series to compute annual mass balances. The details and causes of the spatial and temporal variability of the land-ice regions studied are discussed. The estimated mass trend over the total GIS, AIS and GOA glaciers for the time period 1 December 2003 to 1 December 2010 is -380 plus or minus 31 Gt a(exp -1), equivalent to -1.05 plus or minus 0.09 mma(exp -1) sea-level rise. Over the same time period we estimate the mass acceleration to be -41 plus or minus 27 Gt a(exp -2), equivalent to a 0.11 plus or minus 0.08 mm a(exp -2) rate of change in sea level. The trends and accelerations are dependent on significant seasonal and annual balance anomalies. Other/Unknown Material Antarc* Antarctica glaciers Greenland Alaska NASA Technical Reports Server (NTRS) Greenland Gulf of Alaska |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing Meteorology and Climatology |
spellingShingle |
Earth Resources and Remote Sensing Meteorology and Climatology Camp, J. McCarthy, J. J. Arendt, A. A. Loomis, B. D. Luthcke, Scott B. Sabaka, T. J. Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
topic_facet |
Earth Resources and Remote Sensing Meteorology and Climatology |
description |
We have determined the ice mass evolution of the Antarctica and Greenland ice sheets (AIS and GIS) and Gulf of Alaska (GOA) glaciers from a new GRACE global solution of equal-area surface mass concentration parcels (mascons) in equivalent height of water. The mascons were estimated directly from the reduction of the inter-satellite K-band range-rate (KBRR) observations, taking into account the full noise covariance, and formally iterating the solution. The new solution increases signal recovery while reducing the GRACE KBRR observation residuals. The mascons were estimated with 10 day and 1 arc degree equal-area sampling, applying anisotropic constraints. An ensemble empirical mode decomposition adaptive filter was applied to the mascon time series to compute annual mass balances. The details and causes of the spatial and temporal variability of the land-ice regions studied are discussed. The estimated mass trend over the total GIS, AIS and GOA glaciers for the time period 1 December 2003 to 1 December 2010 is -380 plus or minus 31 Gt a(exp -1), equivalent to -1.05 plus or minus 0.09 mma(exp -1) sea-level rise. Over the same time period we estimate the mass acceleration to be -41 plus or minus 27 Gt a(exp -2), equivalent to a 0.11 plus or minus 0.08 mm a(exp -2) rate of change in sea level. The trends and accelerations are dependent on significant seasonal and annual balance anomalies. |
format |
Other/Unknown Material |
author |
Camp, J. McCarthy, J. J. Arendt, A. A. Loomis, B. D. Luthcke, Scott B. Sabaka, T. J. |
author_facet |
Camp, J. McCarthy, J. J. Arendt, A. A. Loomis, B. D. Luthcke, Scott B. Sabaka, T. J. |
author_sort |
Camp, J. |
title |
Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
title_short |
Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
title_full |
Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
title_fullStr |
Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
title_full_unstemmed |
Antarctica, Greenland and Gulf of Alaska Land-Ice Evolution from an Iterated GRACE Global Mascon Solution |
title_sort |
antarctica, greenland and gulf of alaska land-ice evolution from an iterated grace global mascon solution |
publishDate |
2013 |
url |
http://hdl.handle.net/2060/20160003526 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Greenland Gulf of Alaska |
geographic_facet |
Greenland Gulf of Alaska |
genre |
Antarc* Antarctica glaciers Greenland Alaska |
genre_facet |
Antarc* Antarctica glaciers Greenland Alaska |
op_source |
CASI |
op_relation |
Document ID: 20160003526 http://hdl.handle.net/2060/20160003526 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766065069775388672 |