Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model
peer reviewed With the aim of studying the recent Greenland ice sheet (GrIS) surface mass balance (SMB) decrease relative to the last century, we have forced the regional climate MAR (Modèle Atmosphérique Régional; version 3.5.2) model with the ERA-Interim (ECMWF Interim Re-Analysis; 1979–2015), ERA...
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Language: | English |
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Online Access: | https://orbi.uliege.be/handle/2268/209922 https://orbi.uliege.be/bitstream/2268/209922/1/tc-11-1015-2017.pdf https://doi.org/10.5194/tc-11-1015-2017 |
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ftorbi:oai:orbi.ulg.ac.be:2268/209922 2024-04-21T08:03:15+00:00 Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model Fettweis, Xavier Box, Jason Agosta, Cécile Amory, Charles Kittel, Christoph Lang, Charlotte van As, Dirk Machguth, Horst Gallée, Hubert 2017-04-25 https://orbi.uliege.be/handle/2268/209922 https://orbi.uliege.be/bitstream/2268/209922/1/tc-11-1015-2017.pdf https://doi.org/10.5194/tc-11-1015-2017 en eng Copernicus http://www.the-cryosphere.net/11/1015/2017/ urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/209922 info:hdl:2268/209922 https://orbi.uliege.be/bitstream/2268/209922/1/tc-11-1015-2017.pdf doi:10.5194/tc-11-1015-2017 scopus-id:2-s2.0-85018190464 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess The Cryosphere, 11, 1015-1033 (2017-04-25) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2017 ftorbi https://doi.org/10.5194/tc-11-1015-2017 2024-03-27T14:58:15Z peer reviewed With the aim of studying the recent Greenland ice sheet (GrIS) surface mass balance (SMB) decrease relative to the last century, we have forced the regional climate MAR (Modèle Atmosphérique Régional; version 3.5.2) model with the ERA-Interim (ECMWF Interim Re-Analysis; 1979–2015), ERA-40 (1958–2001), NCEP–NCARv1 (National Centers for Environmental Prediction–National Center for Atmospheric Research Reanalysis version 1; 1948–2015), NCEP–NCARv2 (1979–2015), JRA-55 (Japanese 55-year Reanalysis; 1958–2014), 20CRv2(c) (Twentieth Century Reanalysis version 2; 1900–2014) and ERA-20C (1900–2010) reanalyses. While all these forcing products are reanalyses that are assumed to represent the same climate, they produce significant differences in the MAR-simulated SMB over their common period. A temperature adjustment of +1 °C (respectively −1 °C) was, for example, needed at the MAR boundaries with ERA-20C (20CRv2) reanalysis, given that ERA-20C (20CRv2) is ∼ 1 °C colder (warmer) than ERA-Interim over Greenland during the period 1980–2010. Comparisons with daily PROMICE (Programme for Monitoring of the Greenland Ice Sheet) near-surface observations support these adjustments. Comparisons with SMB measurements, ice cores and satellite-derived melt extent reveal the most accurate forcing datasets for the simulation of the GrIS SMB to be ERA-Interim and NCEP–NCARv1. However, some biases remain in MAR, suggesting that some improvements are still needed in its cloudiness and radiative schemes as well as in the representation of the bare ice albedo. Results from all MAR simulations indicate that (i) the period 1961–1990, commonly chosen as a stable reference period for Greenland SMB and ice dynamics, is actually a period of anomalously positive SMB (∼ +40 Gt yr−1) compared to 1900–2010; (ii) SMB has decreased significantly after this reference period due to increasing and unprecedented melt reaching the highest rates in the 120-year common period; (iii) before 1960, both ERA-20C and 20CRv2-forced MAR simulations ... Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere University of Liège: ORBi (Open Repository and Bibliography) The Cryosphere 11 2 1015 1033 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Fettweis, Xavier Box, Jason Agosta, Cécile Amory, Charles Kittel, Christoph Lang, Charlotte van As, Dirk Machguth, Horst Gallée, Hubert Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed With the aim of studying the recent Greenland ice sheet (GrIS) surface mass balance (SMB) decrease relative to the last century, we have forced the regional climate MAR (Modèle Atmosphérique Régional; version 3.5.2) model with the ERA-Interim (ECMWF Interim Re-Analysis; 1979–2015), ERA-40 (1958–2001), NCEP–NCARv1 (National Centers for Environmental Prediction–National Center for Atmospheric Research Reanalysis version 1; 1948–2015), NCEP–NCARv2 (1979–2015), JRA-55 (Japanese 55-year Reanalysis; 1958–2014), 20CRv2(c) (Twentieth Century Reanalysis version 2; 1900–2014) and ERA-20C (1900–2010) reanalyses. While all these forcing products are reanalyses that are assumed to represent the same climate, they produce significant differences in the MAR-simulated SMB over their common period. A temperature adjustment of +1 °C (respectively −1 °C) was, for example, needed at the MAR boundaries with ERA-20C (20CRv2) reanalysis, given that ERA-20C (20CRv2) is ∼ 1 °C colder (warmer) than ERA-Interim over Greenland during the period 1980–2010. Comparisons with daily PROMICE (Programme for Monitoring of the Greenland Ice Sheet) near-surface observations support these adjustments. Comparisons with SMB measurements, ice cores and satellite-derived melt extent reveal the most accurate forcing datasets for the simulation of the GrIS SMB to be ERA-Interim and NCEP–NCARv1. However, some biases remain in MAR, suggesting that some improvements are still needed in its cloudiness and radiative schemes as well as in the representation of the bare ice albedo. Results from all MAR simulations indicate that (i) the period 1961–1990, commonly chosen as a stable reference period for Greenland SMB and ice dynamics, is actually a period of anomalously positive SMB (∼ +40 Gt yr−1) compared to 1900–2010; (ii) SMB has decreased significantly after this reference period due to increasing and unprecedented melt reaching the highest rates in the 120-year common period; (iii) before 1960, both ERA-20C and 20CRv2-forced MAR simulations ... |
format |
Article in Journal/Newspaper |
author |
Fettweis, Xavier Box, Jason Agosta, Cécile Amory, Charles Kittel, Christoph Lang, Charlotte van As, Dirk Machguth, Horst Gallée, Hubert |
author_facet |
Fettweis, Xavier Box, Jason Agosta, Cécile Amory, Charles Kittel, Christoph Lang, Charlotte van As, Dirk Machguth, Horst Gallée, Hubert |
author_sort |
Fettweis, Xavier |
title |
Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
title_short |
Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
title_full |
Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
title_fullStr |
Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
title_full_unstemmed |
Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model |
title_sort |
reconstructions of the 1900–2015 greenland ice sheet surface mass balance using the regional climate mar model |
publisher |
Copernicus |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/209922 https://orbi.uliege.be/bitstream/2268/209922/1/tc-11-1015-2017.pdf https://doi.org/10.5194/tc-11-1015-2017 |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, 11, 1015-1033 (2017-04-25) |
op_relation |
http://www.the-cryosphere.net/11/1015/2017/ urn:issn:1994-0416 urn:issn:1994-0424 https://orbi.uliege.be/handle/2268/209922 info:hdl:2268/209922 https://orbi.uliege.be/bitstream/2268/209922/1/tc-11-1015-2017.pdf doi:10.5194/tc-11-1015-2017 scopus-id:2-s2.0-85018190464 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-1015-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
2 |
container_start_page |
1015 |
op_container_end_page |
1033 |
_version_ |
1796943183176794112 |