Articles | Volume 19, issue 17
https://doi.org/10.5194/acp-19-11525-2019
https://doi.org/10.5194/acp-19-11525-2019
Research article
 | 
12 Sep 2019
Research article |  | 12 Sep 2019

Vertical profile observations of water vapor deuterium excess in the lower troposphere

Olivia E. Salmon, Lisa R. Welp, Michael E. Baldwin, Kristian D. Hajny, Brian H. Stirm, and Paul B. Shepson

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Short summary
We conducted airborne vertical profile measurements of water vapor stable isotopes to examine how boundary layer, cloud, and mixing processes influence the vertical structure of deuterium excess in the lower troposphere. We discuss reasons our observations are consistent with water vapor isotope theory on some days and not others. Deuterium excess may be useful for understanding complex processes occurring at the top of the boundary layer, including cloud formation, evaporation, and air mixing.
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