Deuterium excess in Greenland snow: Analysis with simple and complex models
International audience A simple Rayleigh-type isotope model, typical of those used to develop algorithms for extracting climatic information from stable water isotope paleodata, is evaluated against the more complex and presumably more reliable calculations of a general circulation model (GCM) fitte...
Published in: | Journal of Geophysical Research: Atmospheres |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
1998
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Online Access: | https://hal.science/hal-02923817 https://hal.science/hal-02923817/document https://hal.science/hal-02923817/file/98JD00274.pdf https://doi.org/10.1029/98JD00274 |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Armengaud, Alexandre Koster, Randal Jouzel, Jean Ciais, Philippe Deuterium excess in Greenland snow: Analysis with simple and complex models |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience A simple Rayleigh-type isotope model, typical of those used to develop algorithms for extracting climatic information from stable water isotope paleodata, is evaluated against the more complex and presumably more reliable calculations of a general circulation model (GCM) fitted with isotope tracer diagnostics. The evaluation centers on an analysis of how the temperature T e of an oceanic moisture source affects the deuterium excess d of Greenland precipitation. The annual Te-d relationship derived from the GCM diagnostics is largely reproduced by the simple isotope model when the latter is properly initialized. This, coupled with the fact that the GCM itself reproduces observed isotope behavior, suggests that the simpler model's atmospheric calculations are indeed adequate for isotope studies. Furthermore, the GCM results support the idea, originally developed with the simpler models, that polar deuterium excess values contain information on meteorological conditions at distant evaporative sources. 1. Introduction The stable isotopes of water, HDO and H}sO, have been measured in ice cores and other paleowaters in varying concentrations. Through a detailed analysis of current isotope concentration fields, isotope/climate relationships have been derived which allow the extraction of paleoclimatic temperatures from paleowater measurements (see Jouzel et al. [1997] for a recent review). A related isotopic quantity, deuterium excess, is now being used to infer additional paleoclimatic information. Deuterium excess d was defined by Daansgaard [1964] as d = •D-8•sO, where • indicates a permil deviation from the corresponding isotope ratio in standard mean ocean water (SMOW). The factor 8 comes from the meteoric water line, which defines the locus of modern precipitation in a 5D/5•80 plot [Craig, 1961]. Using a simple evaporation model and a Rayleigh-type precipitation model, Merlivat and Jouzel [1979] inferred that the deuterium excess of precipitation primarily depends on the mean relative ... |
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)) ICOS-ATC (ICOS-ATC) |
format |
Article in Journal/Newspaper |
author |
Armengaud, Alexandre Koster, Randal Jouzel, Jean Ciais, Philippe |
author_facet |
Armengaud, Alexandre Koster, Randal Jouzel, Jean Ciais, Philippe |
author_sort |
Armengaud, Alexandre |
title |
Deuterium excess in Greenland snow: Analysis with simple and complex models |
title_short |
Deuterium excess in Greenland snow: Analysis with simple and complex models |
title_full |
Deuterium excess in Greenland snow: Analysis with simple and complex models |
title_fullStr |
Deuterium excess in Greenland snow: Analysis with simple and complex models |
title_full_unstemmed |
Deuterium excess in Greenland snow: Analysis with simple and complex models |
title_sort |
deuterium excess in greenland snow: analysis with simple and complex models |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.science/hal-02923817 https://hal.science/hal-02923817/document https://hal.science/hal-02923817/file/98JD00274.pdf https://doi.org/10.1029/98JD00274 |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-02923817 Journal of Geophysical Research: Atmospheres, 1998, 103 (D8), pp.8947-8953. ⟨10.1029/98JD00274⟩ |
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op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/98JD00274 |
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Journal of Geophysical Research: Atmospheres |
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103 |
container_issue |
D8 |
container_start_page |
8947 |
op_container_end_page |
8953 |
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1810447244264996864 |
spelling |
ftceafr:oai:HAL:hal-02923817v1 2024-09-15T18:09:40+00:00 Deuterium excess in Greenland snow: Analysis with simple and complex models Armengaud, Alexandre Koster, Randal Jouzel, Jean Ciais, Philippe 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)) ICOS-ATC (ICOS-ATC) 1998-04-27 https://hal.science/hal-02923817 https://hal.science/hal-02923817/document https://hal.science/hal-02923817/file/98JD00274.pdf https://doi.org/10.1029/98JD00274 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/98JD00274 hal-02923817 https://hal.science/hal-02923817 https://hal.science/hal-02923817/document https://hal.science/hal-02923817/file/98JD00274.pdf doi:10.1029/98JD00274 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-02923817 Journal of Geophysical Research: Atmospheres, 1998, 103 (D8), pp.8947-8953. ⟨10.1029/98JD00274⟩ [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 1998 ftceafr https://doi.org/10.1029/98JD00274 2024-07-22T13:17:40Z International audience A simple Rayleigh-type isotope model, typical of those used to develop algorithms for extracting climatic information from stable water isotope paleodata, is evaluated against the more complex and presumably more reliable calculations of a general circulation model (GCM) fitted with isotope tracer diagnostics. The evaluation centers on an analysis of how the temperature T e of an oceanic moisture source affects the deuterium excess d of Greenland precipitation. The annual Te-d relationship derived from the GCM diagnostics is largely reproduced by the simple isotope model when the latter is properly initialized. This, coupled with the fact that the GCM itself reproduces observed isotope behavior, suggests that the simpler model's atmospheric calculations are indeed adequate for isotope studies. Furthermore, the GCM results support the idea, originally developed with the simpler models, that polar deuterium excess values contain information on meteorological conditions at distant evaporative sources. 1. Introduction The stable isotopes of water, HDO and H}sO, have been measured in ice cores and other paleowaters in varying concentrations. Through a detailed analysis of current isotope concentration fields, isotope/climate relationships have been derived which allow the extraction of paleoclimatic temperatures from paleowater measurements (see Jouzel et al. [1997] for a recent review). A related isotopic quantity, deuterium excess, is now being used to infer additional paleoclimatic information. Deuterium excess d was defined by Daansgaard [1964] as d = •D-8•sO, where • indicates a permil deviation from the corresponding isotope ratio in standard mean ocean water (SMOW). The factor 8 comes from the meteoric water line, which defines the locus of modern precipitation in a 5D/5•80 plot [Craig, 1961]. Using a simple evaporation model and a Rayleigh-type precipitation model, Merlivat and Jouzel [1979] inferred that the deuterium excess of precipitation primarily depends on the mean relative ... Article in Journal/Newspaper Greenland HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Journal of Geophysical Research: Atmospheres 103 D8 8947 8953 |