Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes
International audience Modeling the isotopic ratios of precipitation in cold regions meets the problem of "switching" from the vapor-liquid transition to the vapor-ice transition at the onset of snow formation. The one-dimensional model (mixed cloud isotopic model (MCIM)) described in this...
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ftccsdartic:oai:HAL:hal-02923778v1 2023-05-15T14:03:48+02:00 Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes Ciais, Philippe Jouzel, Jean Laboratoire de Modélisation du Climat et de l'Environnement (LMCE) 1994 https://hal.archives-ouvertes.fr/hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778/document https://hal.archives-ouvertes.fr/hal-02923778/file/ark%20_67375_WNG-QJ6TH97Q-L.pdf https://doi.org/10.1029/94JD00412 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/94JD00412 hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778/document https://hal.archives-ouvertes.fr/hal-02923778/file/ark%20_67375_WNG-QJ6TH97Q-L.pdf doi:10.1029/94JD00412 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-02923778 Journal of Geophysical Research, American Geophysical Union, 1994, 99 (D8), pp.16.793-16.803. ⟨10.1029/94JD00412⟩ [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 1994 ftccsdartic https://doi.org/10.1029/94JD00412 2021-10-16T22:59:50Z International audience Modeling the isotopic ratios of precipitation in cold regions meets the problem of "switching" from the vapor-liquid transition to the vapor-ice transition at the onset of snow formation. The one-dimensional model (mixed cloud isotopic model (MCIM)) described in this paper focuses on the fractionation of water isotopes in mixed clouds, where both liquid droplets and ice crystals can coexist for a given range of temperatures. This feature is linked to the existence of specific saturation conditions within the cloud, allowing droplets to evaporate while the water vapor condensates onto ice crystals. The isotopic composition of the different airborne phases and the precipitation is calculated throughout the condensation history of an isolated air mass moving over the Antarctic ice sheet. The results of the MCIM are compared to surface snow data both for the isotopic ratios and the deuterium excesses. The sensitivity of the model is compared to previous one-dimensional models. Our main result is that accounting specifically for the microphysics of mixed stratiform clouds (Bergeron-Findesein process) does not invalidate the results of earlier modeling studies. 1. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Journal of Geophysical Research 99 D8 16793 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
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 Ciais, Philippe Jouzel, Jean Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Modeling the isotopic ratios of precipitation in cold regions meets the problem of "switching" from the vapor-liquid transition to the vapor-ice transition at the onset of snow formation. The one-dimensional model (mixed cloud isotopic model (MCIM)) described in this paper focuses on the fractionation of water isotopes in mixed clouds, where both liquid droplets and ice crystals can coexist for a given range of temperatures. This feature is linked to the existence of specific saturation conditions within the cloud, allowing droplets to evaporate while the water vapor condensates onto ice crystals. The isotopic composition of the different airborne phases and the precipitation is calculated throughout the condensation history of an isolated air mass moving over the Antarctic ice sheet. The results of the MCIM are compared to surface snow data both for the isotopic ratios and the deuterium excesses. The sensitivity of the model is compared to previous one-dimensional models. Our main result is that accounting specifically for the microphysics of mixed stratiform clouds (Bergeron-Findesein process) does not invalidate the results of earlier modeling studies. 1. |
author2 |
Laboratoire de Modélisation du Climat et de l'Environnement (LMCE) |
format |
Article in Journal/Newspaper |
author |
Ciais, Philippe Jouzel, Jean |
author_facet |
Ciais, Philippe Jouzel, Jean |
author_sort |
Ciais, Philippe |
title |
Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
title_short |
Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
title_full |
Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
title_fullStr |
Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
title_full_unstemmed |
Deuterium and oxygen 18 in precipitation: Isotopic model, including mixed cloud processes |
title_sort |
deuterium and oxygen 18 in precipitation: isotopic model, including mixed cloud processes |
publisher |
HAL CCSD |
publishDate |
1994 |
url |
https://hal.archives-ouvertes.fr/hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778/document https://hal.archives-ouvertes.fr/hal-02923778/file/ark%20_67375_WNG-QJ6TH97Q-L.pdf https://doi.org/10.1029/94JD00412 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-02923778 Journal of Geophysical Research, American Geophysical Union, 1994, 99 (D8), pp.16.793-16.803. ⟨10.1029/94JD00412⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/94JD00412 hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778 https://hal.archives-ouvertes.fr/hal-02923778/document https://hal.archives-ouvertes.fr/hal-02923778/file/ark%20_67375_WNG-QJ6TH97Q-L.pdf doi:10.1029/94JD00412 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/94JD00412 |
container_title |
Journal of Geophysical Research |
container_volume |
99 |
container_issue |
D8 |
container_start_page |
16793 |
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1766274657039679488 |