Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas
We use a Monte Carlo approach to invert a spherical harmonic representation of cryosphere-attributed mass change in order to infer the most likely underlying mass changes within irregularly shaped ice-covered areas at nominal 26 km resolution. By inverting a spherical harmonic representation through...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2013
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-7-1901-2013 https://doaj.org/article/e70d06b753de499595cd09d314c907df |
id |
ftdoajarticles:oai:doaj.org/article:e70d06b753de499595cd09d314c907df |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e70d06b753de499595cd09d314c907df 2023-05-15T16:26:01+02:00 Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas W. Colgan S. Luthcke W. Abdalati M. Citterio 2013-12-01T00:00:00Z https://doi.org/10.5194/tc-7-1901-2013 https://doaj.org/article/e70d06b753de499595cd09d314c907df EN eng Copernicus Publications http://www.the-cryosphere.net/7/1901/2013/tc-7-1901-2013.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-7-1901-2013 https://doaj.org/article/e70d06b753de499595cd09d314c907df The Cryosphere, Vol 7, Iss 6, Pp 1901-1914 (2013) Environmental sciences GE1-350 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/tc-7-1901-2013 2022-12-31T03:48:47Z We use a Monte Carlo approach to invert a spherical harmonic representation of cryosphere-attributed mass change in order to infer the most likely underlying mass changes within irregularly shaped ice-covered areas at nominal 26 km resolution. By inverting a spherical harmonic representation through the incorporation of additional fractional ice coverage information, this approach seeks to eliminate signal leakage between non-ice-covered and ice-covered areas. The spherical harmonic representation suggests a Greenland mass loss of 251 ± 25 Gt a −1 over the December 2003 to December 2010 period. The inversion suggests 218 ± 20 Gt a −1 was due to the ice sheet proper, and 34 ± 5 Gt a −1 (or ~14%) was due to Greenland peripheral glaciers and ice caps (GrPGICs). This mass loss from GrPGICs exceeds that inferred from all ice masses on both Ellesmere and Devon islands combined. This partition therefore highlights that GRACE-derived "Greenland" mass loss cannot be taken as synonymous with "Greenland ice sheet" mass loss when making comparisons with estimates of ice sheet mass balance derived from techniques that sample only the ice sheet proper. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere ice covered areas Directory of Open Access Journals: DOAJ Articles Greenland The Cryosphere 7 6 1901 1914 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 W. Colgan S. Luthcke W. Abdalati M. Citterio Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
We use a Monte Carlo approach to invert a spherical harmonic representation of cryosphere-attributed mass change in order to infer the most likely underlying mass changes within irregularly shaped ice-covered areas at nominal 26 km resolution. By inverting a spherical harmonic representation through the incorporation of additional fractional ice coverage information, this approach seeks to eliminate signal leakage between non-ice-covered and ice-covered areas. The spherical harmonic representation suggests a Greenland mass loss of 251 ± 25 Gt a −1 over the December 2003 to December 2010 period. The inversion suggests 218 ± 20 Gt a −1 was due to the ice sheet proper, and 34 ± 5 Gt a −1 (or ~14%) was due to Greenland peripheral glaciers and ice caps (GrPGICs). This mass loss from GrPGICs exceeds that inferred from all ice masses on both Ellesmere and Devon islands combined. This partition therefore highlights that GRACE-derived "Greenland" mass loss cannot be taken as synonymous with "Greenland ice sheet" mass loss when making comparisons with estimates of ice sheet mass balance derived from techniques that sample only the ice sheet proper. |
format |
Article in Journal/Newspaper |
author |
W. Colgan S. Luthcke W. Abdalati M. Citterio |
author_facet |
W. Colgan S. Luthcke W. Abdalati M. Citterio |
author_sort |
W. Colgan |
title |
Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
title_short |
Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
title_full |
Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
title_fullStr |
Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
title_full_unstemmed |
Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
title_sort |
constraining grace-derived cryosphere-attributed signal to irregularly shaped ice-covered areas |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/tc-7-1901-2013 https://doaj.org/article/e70d06b753de499595cd09d314c907df |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere ice covered areas |
genre_facet |
Greenland Ice Sheet The Cryosphere ice covered areas |
op_source |
The Cryosphere, Vol 7, Iss 6, Pp 1901-1914 (2013) |
op_relation |
http://www.the-cryosphere.net/7/1901/2013/tc-7-1901-2013.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-7-1901-2013 https://doaj.org/article/e70d06b753de499595cd09d314c907df |
op_doi |
https://doi.org/10.5194/tc-7-1901-2013 |
container_title |
The Cryosphere |
container_volume |
7 |
container_issue |
6 |
container_start_page |
1901 |
op_container_end_page |
1914 |
_version_ |
1766014886624624640 |