Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition
International audience The isotopic composition of near surface (or planetary boundary layer) water vapor on the south coast of Iceland (63.83°N, 21.47°W) has been monitored in situ between November 2011 and April 2013. The calibrated data set documents seasonal variations in the relationship betwee...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.science/hal-01806151 https://hal.science/hal-01806151/document https://hal.science/hal-01806151/file/2015JD023234.pdf https://doi.org/10.1002/2015JD023234 |
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Institut national des sciences de l'Univers: HAL-INSU |
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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 Steen-Larsen, H. Sveinbjornsdottir, A. Jonsson, Th. Ritter, F. Bonne, J.-L. Masson-Delmotte, Valérie Sodemann, H. Blunier, T. Dahl-Jensen, D. Vinther, B. Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
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 isotopic composition of near surface (or planetary boundary layer) water vapor on the south coast of Iceland (63.83°N, 21.47°W) has been monitored in situ between November 2011 and April 2013. The calibrated data set documents seasonal variations in the relationship between δ 18 O and local humidity (ppmv) and between deuterium excess and δ 18 O. These seasonal variations are attributed to seasonal changes in atmospheric transport. A strong linear relationship is observed between deuterium excess and atmospheric relative humidity calculated at regional sea surface temperature. Surprisingly, we find a similar relationship between deuterium excess and relative humidity as observed in the Bermuda Islands. During days with low amount of isotopic depletion (more enriched values), our data significantly deviate from the global meteoric water line. This feature can be explained by a supply of an evaporative flux into the planetary boundary layer above the ocean, which we show using a 1-d box model. Based on the close relationship identified between moisture origin and deuterium excess, we combine deuterium excess measurements performed in Iceland and south Greenland with moisture source diagnostics based on back trajectory calculations to establish the distribution of d-excess moisture uptake values across the North Atlantic. We map high deuterium excess in the Arctic and low deuterium excess for vapor in the subtropics and midlatitudes. This confirms the role of North Atlantic water vapor isotopes as moisture origin tracers. |
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) Institute of Earth Sciences Reykjavik University of Iceland Reykjavik 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)) Norwegian Institute for Air Research (NILU) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) |
format |
Article in Journal/Newspaper |
author |
Steen-Larsen, H. Sveinbjornsdottir, A. Jonsson, Th. Ritter, F. Bonne, J.-L. Masson-Delmotte, Valérie Sodemann, H. Blunier, T. Dahl-Jensen, D. Vinther, B. |
author_facet |
Steen-Larsen, H. Sveinbjornsdottir, A. Jonsson, Th. Ritter, F. Bonne, J.-L. Masson-Delmotte, Valérie Sodemann, H. Blunier, T. Dahl-Jensen, D. Vinther, B. |
author_sort |
Steen-Larsen, H. |
title |
Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
title_short |
Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
title_full |
Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
title_fullStr |
Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
title_full_unstemmed |
Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition |
title_sort |
moisture sources and synoptic to seasonal variability of north atlantic water vapor isotopic composition |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-01806151 https://hal.science/hal-01806151/document https://hal.science/hal-01806151/file/2015JD023234.pdf https://doi.org/10.1002/2015JD023234 |
genre |
Arctic Greenland Iceland North Atlantic |
genre_facet |
Arctic Greenland Iceland North Atlantic |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-01806151 Journal of Geophysical Research: Atmospheres, 2015, 120 (12), pp.5757 - 5774. ⟨10.1002/2015JD023234⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD023234 hal-01806151 https://hal.science/hal-01806151 https://hal.science/hal-01806151/document https://hal.science/hal-01806151/file/2015JD023234.pdf doi:10.1002/2015JD023234 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2015JD023234 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
120 |
container_issue |
12 |
container_start_page |
5757 |
op_container_end_page |
5774 |
_version_ |
1797578794738909184 |
spelling |
ftinsu:oai:HAL:hal-01806151v1 2024-04-28T08:11:19+00:00 Moisture sources and synoptic to seasonal variability of North Atlantic water vapor isotopic composition Steen-Larsen, H. Sveinbjornsdottir, A. Jonsson, Th. Ritter, F. Bonne, J.-L. Masson-Delmotte, Valérie Sodemann, H. Blunier, T. Dahl-Jensen, D. Vinther, B. 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) Institute of Earth Sciences Reykjavik University of Iceland Reykjavik 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)) Norwegian Institute for Air Research (NILU) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) 2015-06-27 https://hal.science/hal-01806151 https://hal.science/hal-01806151/document https://hal.science/hal-01806151/file/2015JD023234.pdf https://doi.org/10.1002/2015JD023234 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD023234 hal-01806151 https://hal.science/hal-01806151 https://hal.science/hal-01806151/document https://hal.science/hal-01806151/file/2015JD023234.pdf doi:10.1002/2015JD023234 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-01806151 Journal of Geophysical Research: Atmospheres, 2015, 120 (12), pp.5757 - 5774. ⟨10.1002/2015JD023234⟩ [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 2015 ftinsu https://doi.org/10.1002/2015JD023234 2024-04-05T00:40:08Z International audience The isotopic composition of near surface (or planetary boundary layer) water vapor on the south coast of Iceland (63.83°N, 21.47°W) has been monitored in situ between November 2011 and April 2013. The calibrated data set documents seasonal variations in the relationship between δ 18 O and local humidity (ppmv) and between deuterium excess and δ 18 O. These seasonal variations are attributed to seasonal changes in atmospheric transport. A strong linear relationship is observed between deuterium excess and atmospheric relative humidity calculated at regional sea surface temperature. Surprisingly, we find a similar relationship between deuterium excess and relative humidity as observed in the Bermuda Islands. During days with low amount of isotopic depletion (more enriched values), our data significantly deviate from the global meteoric water line. This feature can be explained by a supply of an evaporative flux into the planetary boundary layer above the ocean, which we show using a 1-d box model. Based on the close relationship identified between moisture origin and deuterium excess, we combine deuterium excess measurements performed in Iceland and south Greenland with moisture source diagnostics based on back trajectory calculations to establish the distribution of d-excess moisture uptake values across the North Atlantic. We map high deuterium excess in the Arctic and low deuterium excess for vapor in the subtropics and midlatitudes. This confirms the role of North Atlantic water vapor isotopes as moisture origin tracers. Article in Journal/Newspaper Arctic Greenland Iceland North Atlantic Institut national des sciences de l'Univers: HAL-INSU Journal of Geophysical Research: Atmospheres 120 12 5757 5774 |