Articles | Volume 22, issue 24
https://doi.org/10.5194/bg-22-8005-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-8005-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
BG Letters
| Highlight paper
| 
16 Dec 2025
BG Letters | Highlight paper |
| 16 Dec 2025
| 16 Dec 2025
Water vapour dynamics as a key determinant of atmospheric composition and transport mechanisms
Department of Applied Physics, University of Granada, Granada, 18071, Spain
Andalusian Institute for Earth System Research (IISTA), Granada, 18071, Spain
Ivan A. Janssens
Department of Biology, University of Antwerp, Wilrijk, Belgium
Oscar Pérez-Priego
Andalusian Institute for Earth System Research (IISTA), Granada, 18071, Spain
Department of Forest Engineering, University of Córdoba, Córdoba, Spain
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Co-editor-in-chief
This study presents a novel view on water vapour dynamics and the role it plays for atmospheric composition and transport mechanisms.
This study presents a novel view on water vapour dynamics and the role it plays for atmospheric...
Short summary
Humidification of air reduces the abundances of dry-air gas components such as oxygen, explaining why tropical humidity can be "stifling". This is overlooked due to the common expression of gas concentrations as fractions of dry air. Such neglect of water vapour also masks the key role of its sources and sinks in activating transport mechanisms of other gases. Humidity should be quantified whenever reporting gas concentrations.
Humidification of air reduces the abundances of dry-air gas components such as oxygen,...
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