Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region
Accepted version of the paper "Non-Equilibrium Fractionation Factors for D/H and 18 O/ 16 O During Oceanic Evaporation in the North-West Atlantic Region". An edited version of this paper was published by AGU. Copyright (2022) American Geophysical Union. Zannoni, D., Steen‐Larsen, H. C., Pe...
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ftzenodo:oai:zenodo.org:7326925 2024-09-15T18:25:05+00:00 Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region Zannoni, Daniele Steen-Larsen, Hans Christian Peters, Andrew J. Wahl, Sonja Sodemann, Harald Sveinbjörnsdóttir, Árný E. 2022-10-31 https://doi.org/10.5281/zenodo.7326925 unknown Zenodo https://doi.org/10.1029/2022JD037076 https://zenodo.org/communities/eu https://doi.org/10.5281/zenodo.7326924 https://doi.org/10.5281/zenodo.7326925 oai:zenodo.org:7326925 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article 2022 ftzenodo https://doi.org/10.5281/zenodo.732692510.1029/2022JD03707610.5281/zenodo.7326924 2024-07-26T21:03:32Z Accepted version of the paper "Non-Equilibrium Fractionation Factors for D/H and 18 O/ 16 O During Oceanic Evaporation in the North-West Atlantic Region". An edited version of this paper was published by AGU. Copyright (2022) American Geophysical Union. Zannoni, D., Steen‐Larsen, H. C., Peters, A. J., Wahl, S., Sodemann, H., & Sveinbjörnsdóttir, A. E. Non‐Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North‐West Atlantic Region. Journal of Geophysical Research: Atmospheres , e2022JD037076. https://doi.org/10.1029/2022JD037076 In accordance with the theDual Publication Policy of AGU. Abstract Ocean isotopic evaporation models, such as the Craig-Gordon model, rely on the description of non-equilibrium fractionation factors that are, in general, poorly constrained. To date, only a few gradient-diffusion type measurements have been performed in ocean settings to test the validity of the commonly used parametrization of non-equilibrium isotopic fractionation during ocean evaporation. In this work we present six months of water vapor isotopic observations collected from a meteorological tower located in the northwest Atlantic Ocean (Bermuda) with the objective of estimating non-equilibrium fractionation factors ( k, ‰ ) for ocean evaporation and their wind speed dependency. The Keeling plot method and Craig-Gordon model combination was sensitive enough to resolve non-equilibrium fractionation factors during evaporation resulting into mean values of k 18 = 5.2±0.6 ‰ and k 2 = 4.3±3.4 ‰. Furthermore, we evaluate the relationship between k and 10-m wind speed over the ocean. Such a relationship is expected from current evaporation theory and from laboratory experiments made in the 1970s, but observational evidence is lacking. We show that (i) in the observed wind speed range [0 – 10 m s -1 ] the sensitivity of k to wind speed is small, in the order of -0.2 ‰ m -1 s for k 18 , and (ii) there is no empirical evidence for the presence of a discontinuity between smooth and rough ... Article in Journal/Newspaper North West Atlantic Northwest Atlantic Zenodo |
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Accepted version of the paper "Non-Equilibrium Fractionation Factors for D/H and 18 O/ 16 O During Oceanic Evaporation in the North-West Atlantic Region". An edited version of this paper was published by AGU. Copyright (2022) American Geophysical Union. Zannoni, D., Steen‐Larsen, H. C., Peters, A. J., Wahl, S., Sodemann, H., & Sveinbjörnsdóttir, A. E. Non‐Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North‐West Atlantic Region. Journal of Geophysical Research: Atmospheres , e2022JD037076. https://doi.org/10.1029/2022JD037076 In accordance with the theDual Publication Policy of AGU. Abstract Ocean isotopic evaporation models, such as the Craig-Gordon model, rely on the description of non-equilibrium fractionation factors that are, in general, poorly constrained. To date, only a few gradient-diffusion type measurements have been performed in ocean settings to test the validity of the commonly used parametrization of non-equilibrium isotopic fractionation during ocean evaporation. In this work we present six months of water vapor isotopic observations collected from a meteorological tower located in the northwest Atlantic Ocean (Bermuda) with the objective of estimating non-equilibrium fractionation factors ( k, ‰ ) for ocean evaporation and their wind speed dependency. The Keeling plot method and Craig-Gordon model combination was sensitive enough to resolve non-equilibrium fractionation factors during evaporation resulting into mean values of k 18 = 5.2±0.6 ‰ and k 2 = 4.3±3.4 ‰. Furthermore, we evaluate the relationship between k and 10-m wind speed over the ocean. Such a relationship is expected from current evaporation theory and from laboratory experiments made in the 1970s, but observational evidence is lacking. We show that (i) in the observed wind speed range [0 – 10 m s -1 ] the sensitivity of k to wind speed is small, in the order of -0.2 ‰ m -1 s for k 18 , and (ii) there is no empirical evidence for the presence of a discontinuity between smooth and rough ... |
format |
Article in Journal/Newspaper |
author |
Zannoni, Daniele Steen-Larsen, Hans Christian Peters, Andrew J. Wahl, Sonja Sodemann, Harald Sveinbjörnsdóttir, Árný E. |
spellingShingle |
Zannoni, Daniele Steen-Larsen, Hans Christian Peters, Andrew J. Wahl, Sonja Sodemann, Harald Sveinbjörnsdóttir, Árný E. Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
author_facet |
Zannoni, Daniele Steen-Larsen, Hans Christian Peters, Andrew J. Wahl, Sonja Sodemann, Harald Sveinbjörnsdóttir, Árný E. |
author_sort |
Zannoni, Daniele |
title |
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
title_short |
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
title_full |
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
title_fullStr |
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
title_full_unstemmed |
Non-Equilibrium Fractionation Factors for D/H and 18O/16O During Oceanic Evaporation in the North-West Atlantic Region |
title_sort |
non-equilibrium fractionation factors for d/h and 18o/16o during oceanic evaporation in the north-west atlantic region |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.5281/zenodo.7326925 |
genre |
North West Atlantic Northwest Atlantic |
genre_facet |
North West Atlantic Northwest Atlantic |
op_relation |
https://doi.org/10.1029/2022JD037076 https://zenodo.org/communities/eu https://doi.org/10.5281/zenodo.7326924 https://doi.org/10.5281/zenodo.7326925 oai:zenodo.org:7326925 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.732692510.1029/2022JD03707610.5281/zenodo.7326924 |
_version_ |
1810465502027317248 |