Articles | Volume 19, issue 6
https://doi.org/10.5194/acp-19-4005-2019
https://doi.org/10.5194/acp-19-4005-2019
Research article
 | 
29 Mar 2019
Research article |  | 29 Mar 2019

Rethinking Craig and Gordon's approach to modeling isotopic compositions of marine boundary layer vapor

Xiahong Feng, Eric S. Posmentier, Leslie J. Sonder, and Naixin Fan

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Short summary
We present a 1-D model to simulate H2O isotopologues of vapor and their vertical fluxes in the first kilometer above the sea surface. The model includes two processes not in earlier Craig–Gordon isotope evaporation models: height-dependent diffusion/mixing and ascending/converging air. Calculated isotopic ratios compare well with data from seven cruises. The model explains how sea surface meteorology can affect atmospheric vapor, precipitation isotope ratios, and paleoisotope records.
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