Borehole versus isotope temperatures on Greenland: Seasonality does matter
International audience New simulation results obtained with the Hamburg Atmosphere General Circulation Model ECHAM-4 under maximum glacial boundary (LGM) conditions confirm the paleotemperatures on Greenland determined by borehole thermometry. The disagreement between $•80 isotope based temperatures...
Published in: | Geophysical Research Letters |
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Online Access: | https://hal.science/hal-03123408 https://hal.science/hal-03123408/document https://hal.science/hal-03123408/file/1999GL006075.pdf https://doi.org/10.1029/1999GL006075 |
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ftuniversailles:oai:HAL:hal-03123408v1 2024-04-28T08:20:34+00:00 Borehole versus isotope temperatures on Greenland: Seasonality does matter Werner, Martin Mikolajewicz, Uwe Heimann, Martin Hoffmann, Georg Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 2000-03-01 https://hal.science/hal-03123408 https://hal.science/hal-03123408/document https://hal.science/hal-03123408/file/1999GL006075.pdf https://doi.org/10.1029/1999GL006075 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/1999GL006075 hal-03123408 https://hal.science/hal-03123408 https://hal.science/hal-03123408/document https://hal.science/hal-03123408/file/1999GL006075.pdf doi:10.1029/1999GL006075 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03123408 Geophysical Research Letters, 2000, 27 (5), pp.723-726. ⟨10.1029/1999GL006075⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2000 ftuniversailles https://doi.org/10.1029/1999GL006075 2024-04-04T17:34:31Z International audience New simulation results obtained with the Hamburg Atmosphere General Circulation Model ECHAM-4 under maximum glacial boundary (LGM) conditions confirm the paleotemperatures on Greenland determined by borehole thermometry. The disagreement between $•80 isotope based temperatures and the borehole temperatures of the LGM is not only reproduced by the model, but the simulation results provide a plausible explanation: Paleotemperatures inferred from $•80 measurements in ice cores are biased by a substantially increased seasonality of precipitation over Greenland during the LGM. During the glacial winter a much more zonal circulation prevents the effective transport of moisture to the Greenland ice sheet, and therefore reduces the contribution of isotopically strongly depleted winter snow to the annual mean isotope signal. Article in Journal/Newspaper Greenland Ice Sheet Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Geophysical Research Letters 27 5 723 726 |
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Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Werner, Martin Mikolajewicz, Uwe Heimann, Martin Hoffmann, Georg Borehole versus isotope temperatures on Greenland: Seasonality does matter |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience New simulation results obtained with the Hamburg Atmosphere General Circulation Model ECHAM-4 under maximum glacial boundary (LGM) conditions confirm the paleotemperatures on Greenland determined by borehole thermometry. The disagreement between $•80 isotope based temperatures and the borehole temperatures of the LGM is not only reproduced by the model, but the simulation results provide a plausible explanation: Paleotemperatures inferred from $•80 measurements in ice cores are biased by a substantially increased seasonality of precipitation over Greenland during the LGM. During the glacial winter a much more zonal circulation prevents the effective transport of moisture to the Greenland ice sheet, and therefore reduces the contribution of isotopically strongly depleted winter snow to the annual mean isotope signal. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) |
format |
Article in Journal/Newspaper |
author |
Werner, Martin Mikolajewicz, Uwe Heimann, Martin Hoffmann, Georg |
author_facet |
Werner, Martin Mikolajewicz, Uwe Heimann, Martin Hoffmann, Georg |
author_sort |
Werner, Martin |
title |
Borehole versus isotope temperatures on Greenland: Seasonality does matter |
title_short |
Borehole versus isotope temperatures on Greenland: Seasonality does matter |
title_full |
Borehole versus isotope temperatures on Greenland: Seasonality does matter |
title_fullStr |
Borehole versus isotope temperatures on Greenland: Seasonality does matter |
title_full_unstemmed |
Borehole versus isotope temperatures on Greenland: Seasonality does matter |
title_sort |
borehole versus isotope temperatures on greenland: seasonality does matter |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.science/hal-03123408 https://hal.science/hal-03123408/document https://hal.science/hal-03123408/file/1999GL006075.pdf https://doi.org/10.1029/1999GL006075 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03123408 Geophysical Research Letters, 2000, 27 (5), pp.723-726. ⟨10.1029/1999GL006075⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/1999GL006075 hal-03123408 https://hal.science/hal-03123408 https://hal.science/hal-03123408/document https://hal.science/hal-03123408/file/1999GL006075.pdf doi:10.1029/1999GL006075 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/1999GL006075 |
container_title |
Geophysical Research Letters |
container_volume |
27 |
container_issue |
5 |
container_start_page |
723 |
op_container_end_page |
726 |
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1797583408412491776 |