Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic
International audience The Hamburg atmosphere general circulation model ECHAM-4 is used to investigate how a meltwater event in the North Atlantic might alter the signal of stable water isotopes (H2•80, HDO) in precipitation. Our results show that such a meltwater event will cause significant change...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411/document https://hal.archives-ouvertes.fr/hal-03123411/file/1999JD901196.pdf https://doi.org/10.1029/1999JD901196 |
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ftccsdartic:oai:HAL:hal-03123411v1 2023-05-15T17:28:05+02:00 Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic Werner, Martin Mikolajewicz, Uwe Hoffmann, Georg Heimann, Martin Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2000-04-27 https://hal.archives-ouvertes.fr/hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411/document https://hal.archives-ouvertes.fr/hal-03123411/file/1999JD901196.pdf https://doi.org/10.1029/1999JD901196 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/1999JD901196 hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411/document https://hal.archives-ouvertes.fr/hal-03123411/file/1999JD901196.pdf doi:10.1029/1999JD901196 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-03123411 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2000, 105 (D8), pp.10161-10167. ⟨10.1029/1999JD901196⟩ [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 ftccsdartic https://doi.org/10.1029/1999JD901196 2021-12-19T00:32:21Z International audience The Hamburg atmosphere general circulation model ECHAM-4 is used to investigate how a meltwater event in the North Atlantic might alter the signal of stable water isotopes (H2•80, HDO) in precipitation. Our results show that such a meltwater event will cause significant changes in the isotopic composition of the precipitation over many parts of the Northern Hemisphere, but also in the tropical Atlantic region. Model simulations suggest that for such a scenario isotope anomalies are not only related to temperature changes, but also to changes in the seasonality of precipitation or the precipitation amount. A changed isotopic composition of evaporating ocean surface waters (caused by a massive meltwater input into the North Atlantic) causes temperature-independent isotope anomalies, too. Changes of the deuterium excess are even more affected by the imposed oceanic isotope anomaly due to the nonlinearity of the evaporation process. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Geophysical Research: Atmospheres 105 D8 10161 10167 |
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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 Werner, Martin Mikolajewicz, Uwe Hoffmann, Georg Heimann, Martin Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The Hamburg atmosphere general circulation model ECHAM-4 is used to investigate how a meltwater event in the North Atlantic might alter the signal of stable water isotopes (H2•80, HDO) in precipitation. Our results show that such a meltwater event will cause significant changes in the isotopic composition of the precipitation over many parts of the Northern Hemisphere, but also in the tropical Atlantic region. Model simulations suggest that for such a scenario isotope anomalies are not only related to temperature changes, but also to changes in the seasonality of precipitation or the precipitation amount. A changed isotopic composition of evaporating ocean surface waters (caused by a massive meltwater input into the North Atlantic) causes temperature-independent isotope anomalies, too. Changes of the deuterium excess are even more affected by the imposed oceanic isotope anomaly due to the nonlinearity of the evaporation process. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Werner, Martin Mikolajewicz, Uwe Hoffmann, Georg Heimann, Martin |
author_facet |
Werner, Martin Mikolajewicz, Uwe Hoffmann, Georg Heimann, Martin |
author_sort |
Werner, Martin |
title |
Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
title_short |
Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
title_full |
Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
title_fullStr |
Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
title_full_unstemmed |
Possible changes of δ 18 O in precipitation caused by a meltwater event in the North Atlantic |
title_sort |
possible changes of δ 18 o in precipitation caused by a meltwater event in the north atlantic |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.archives-ouvertes.fr/hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411/document https://hal.archives-ouvertes.fr/hal-03123411/file/1999JD901196.pdf https://doi.org/10.1029/1999JD901196 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.archives-ouvertes.fr/hal-03123411 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2000, 105 (D8), pp.10161-10167. ⟨10.1029/1999JD901196⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/1999JD901196 hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411 https://hal.archives-ouvertes.fr/hal-03123411/document https://hal.archives-ouvertes.fr/hal-03123411/file/1999JD901196.pdf doi:10.1029/1999JD901196 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/1999JD901196 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
105 |
container_issue |
D8 |
container_start_page |
10161 |
op_container_end_page |
10167 |
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1766120539174207488 |