Non-Equilibrium Fractionation Factors for D/H and ¹⁸O/¹⁶O During Oceanic Evaporation in the North-West Atlantic Region.

ABSTRACT: Ocean isotopic evaporation models, such as the Craig-Gordon model, rely on the description of nonequilibrium 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 nonequilibrium isotopic fractionation during ocean evaporation. In this work, we present 6 months of water vapor isotopic observations collected from a meteorological tower located in the northwest Atlantic Ocean (Bermuda) with the objective of estimating nonequilibrium fractionation factors (k, ‰) for ocean evaporation and their wind speed dependency. The Keeling Plot method and Craig-Gordon model combination were sensitive enough to resolve nonequilibrium fr

SUBMITTER: Zannoni D 

PROVIDER: S-EPMC9786641 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature