Articles | Volume 24, issue 7
https://doi.org/10.5194/acp-24-4217-2024
https://doi.org/10.5194/acp-24-4217-2024
Research article
 | 
09 Apr 2024
Research article |  | 09 Apr 2024

Reanalysis of NOAA H2 observations: implications for the H2 budget

Fabien Paulot, Gabrielle Pétron, Andrew M. Crotwell, and Matteo B. Bertagni

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New data from the National Oceanic and Atmospheric Administration show that hydrogen (H2) concentrations increased from 2010 to 2019, which is consistent with the simulated increase in H2 photochemical production (mainly from methane). But this cannot be reconciled with the expected decrease (increase) in H2 anthropogenic emissions (soil deposition) in the same period. This shows gaps in our knowledge of the H2 biogeochemical cycle that must be resolved to quantify the impact of higher H2 usage.
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