Articles | Volume 19, issue 18
https://doi.org/10.5194/amt-19-5973-2026
https://doi.org/10.5194/amt-19-5973-2026
Research article
 | 
22 Sep 2026
Research article |  | 22 Sep 2026

Estimating near-surface specific humidity over convective oceanic regions from cloud base height observations

Anna Lea Albright, Bjorn Stevens, and Martin Wirth

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Short summary
Ocean evaporation transfers heat and moisture to the atmosphere, shaping our weather and climate. Yet humidity just above the ocean is difficult to measure from space. Here we show that lasers measuring low cloud base height can infer near-surface humidity. Measurements from ships, aircraft, and weather balloons are used to validate the method. Applied to satellites, this method could help fill gaps in humidity measurements over the ocean.
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