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September 17, 2025Open Access

Mesoscale modulation of marine boundary layer water vapor isotopologues during EUREC4A

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Authors

JGJoseph GalewskySLSebastian A. Los

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Overview

Analysis of water vapor isotopologue data reveals mechanisms of mesoscale circulations influencing humidity and isotopic composition.

Key Points

  • Mesoscale circulations significantly modulate boundary layer humidity and composition in trade-wind regions.
  • Surface δD measurements show a sensitivity that is 7.5 times greater than humidity, highlighting importance of vertical motions.
  • The study employs a flux-form mixed-layer model to elucidate the relationship between vertical velocity and isotopic responses.
  • Understanding these processes could reduce uncertainty in climate projections related to shallow cumulus clouds.

Cite This Study

Galewsky et al. (2025) studied this question.

synapsesocial.com/papers/68d45e4431b076d99fa5e1c2https://doi.org/10.5194/egusphere-2025-4128
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