Climate-driven interannual ice mass evolution in Greenland
International audience We re-evaluate the Greenland mass balance for the recent period using low-pass Independent Component Analysis (ICA) post-processing of the Level-2 GRACE data (2002-2010) from different official providers (UTCSR, JPL, GFZ) and confirm the present important ice mass loss in the...
Published in: | Global and Planetary Change |
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ftccsdartic:oai:HAL:hal-00664041v1 2023-05-15T16:25:53+02:00 Climate-driven interannual ice mass evolution in Greenland Bergmann, Inga Ramillien, Guillaume Frappart, Frédéric GeoForschungsZentrum - Helmholtz-Zentrum Potsdam (GFZ) Géosciences Environnement Toulouse (GET) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD) 2012-02 https://hal.archives-ouvertes.fr/hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041/document https://hal.archives-ouvertes.fr/hal-00664041/file/Bergmann_et_al_GPC_2012_corr.pdf https://doi.org/10.1016/j.gloplacha.2011.11.005 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2011.11.005 hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041/document https://hal.archives-ouvertes.fr/hal-00664041/file/Bergmann_et_al_GPC_2012_corr.pdf doi:10.1016/j.gloplacha.2011.11.005 info:eu-repo/semantics/OpenAccess ISSN: 0921-8181 Global and Planetary Change https://hal.archives-ouvertes.fr/hal-00664041 Global and Planetary Change, Elsevier, 2012, 82-83, pp.1-11. ⟨10.1016/j.gloplacha.2011.11.005⟩ ice sheets mass balance estimates Greenland GRACE [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2012 ftccsdartic https://doi.org/10.1016/j.gloplacha.2011.11.005 2021-10-24T16:54:33Z International audience We re-evaluate the Greenland mass balance for the recent period using low-pass Independent Component Analysis (ICA) post-processing of the Level-2 GRACE data (2002-2010) from different official providers (UTCSR, JPL, GFZ) and confirm the present important ice mass loss in the range of −70 and −90 Gt/y of this ice sheet, due to negative contributions of the glaciers on the east coast. We highlight the high interannual variability of mass variations of the Greenland Ice Sheet (GrIS), especially the recent deceleration of ice loss in 2009-2010, once seasonal cycles are robustly removed by Seasonal Trend Loess (STL) decomposition. Interannual variability leads to varying trend estimates depending on the considered time span. Correction of post-glacial rebound effects on ice mass trend estimates represents no more than 8 Gt/y over the whole ice sheet. We also investigate possible climatic causes that can explain these ice mass interannual variations, as strong correlations between GRACE-based mass balance and atmosphere/ocean parallels are established: (1) changes in snow accumulation, and (2) the influence of inputs of warm ocean water that periodically accelerate the calving of glaciers in coastal regions and, feed-back effects of coastal water cooling by fresh currents from glaciers melting. These results suggest that the Greenland mass balance is driven by coastal sea surface temperature at time scales shorter than accumulation. Article in Journal/Newspaper Greenland Ice Sheet Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Global and Planetary Change 82-83 1 11 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
ice sheets mass balance estimates Greenland GRACE [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
ice sheets mass balance estimates Greenland GRACE [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Bergmann, Inga Ramillien, Guillaume Frappart, Frédéric Climate-driven interannual ice mass evolution in Greenland |
topic_facet |
ice sheets mass balance estimates Greenland GRACE [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We re-evaluate the Greenland mass balance for the recent period using low-pass Independent Component Analysis (ICA) post-processing of the Level-2 GRACE data (2002-2010) from different official providers (UTCSR, JPL, GFZ) and confirm the present important ice mass loss in the range of −70 and −90 Gt/y of this ice sheet, due to negative contributions of the glaciers on the east coast. We highlight the high interannual variability of mass variations of the Greenland Ice Sheet (GrIS), especially the recent deceleration of ice loss in 2009-2010, once seasonal cycles are robustly removed by Seasonal Trend Loess (STL) decomposition. Interannual variability leads to varying trend estimates depending on the considered time span. Correction of post-glacial rebound effects on ice mass trend estimates represents no more than 8 Gt/y over the whole ice sheet. We also investigate possible climatic causes that can explain these ice mass interannual variations, as strong correlations between GRACE-based mass balance and atmosphere/ocean parallels are established: (1) changes in snow accumulation, and (2) the influence of inputs of warm ocean water that periodically accelerate the calving of glaciers in coastal regions and, feed-back effects of coastal water cooling by fresh currents from glaciers melting. These results suggest that the Greenland mass balance is driven by coastal sea surface temperature at time scales shorter than accumulation. |
author2 |
GeoForschungsZentrum - Helmholtz-Zentrum Potsdam (GFZ) Géosciences Environnement Toulouse (GET) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD) |
format |
Article in Journal/Newspaper |
author |
Bergmann, Inga Ramillien, Guillaume Frappart, Frédéric |
author_facet |
Bergmann, Inga Ramillien, Guillaume Frappart, Frédéric |
author_sort |
Bergmann, Inga |
title |
Climate-driven interannual ice mass evolution in Greenland |
title_short |
Climate-driven interannual ice mass evolution in Greenland |
title_full |
Climate-driven interannual ice mass evolution in Greenland |
title_fullStr |
Climate-driven interannual ice mass evolution in Greenland |
title_full_unstemmed |
Climate-driven interannual ice mass evolution in Greenland |
title_sort |
climate-driven interannual ice mass evolution in greenland |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.archives-ouvertes.fr/hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041/document https://hal.archives-ouvertes.fr/hal-00664041/file/Bergmann_et_al_GPC_2012_corr.pdf https://doi.org/10.1016/j.gloplacha.2011.11.005 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
ISSN: 0921-8181 Global and Planetary Change https://hal.archives-ouvertes.fr/hal-00664041 Global and Planetary Change, Elsevier, 2012, 82-83, pp.1-11. ⟨10.1016/j.gloplacha.2011.11.005⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2011.11.005 hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041 https://hal.archives-ouvertes.fr/hal-00664041/document https://hal.archives-ouvertes.fr/hal-00664041/file/Bergmann_et_al_GPC_2012_corr.pdf doi:10.1016/j.gloplacha.2011.11.005 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.gloplacha.2011.11.005 |
container_title |
Global and Planetary Change |
container_volume |
82-83 |
container_start_page |
1 |
op_container_end_page |
11 |
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1766014736027090944 |