Articles | Volume 21, issue 23
https://doi.org/10.5194/acp-21-17373-2021
https://doi.org/10.5194/acp-21-17373-2021
Measurement report
 | 
01 Dec 2021
Measurement report |  | 01 Dec 2021

Measurement report: Observation-based formaldehyde production rates and their relation to OH reactivity around the Arabian Peninsula

Dirk Dienhart, John N. Crowley, Efstratios Bourtsoukidis, Achim Edtbauer, Philipp G. Eger, Lisa Ernle, Hartwig Harder, Bettina Hottmann, Monica Martinez, Uwe Parchatka, Jean-Daniel Paris, Eva Y. Pfannerstill, Roland Rohloff, Jan Schuladen, Christof Stönner, Ivan Tadic, Sebastian Tauer, Nijing Wang, Jonathan Williams, Jos Lelieveld, and Horst Fischer

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Total OH reactivity measured around the Arabian Peninsula July-August 2017 Eva Y. Pfannerstill, Nijing Wang, and Jonathan Williams https://doi.org/10.5281/zenodo.3354117

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Short summary
We present the first ship-based in situ measurements of formaldehyde (HCHO), hydroxyl radicals (OH) and the OH reactivity around the Arabian Peninsula. Regression analysis of the HCHO production rate and the related OH chemistry revealed the regional HCHO yield αeff, which represents the different chemical regimes encountered. Highest values were found for the Arabian Gulf (also known as the Persian Gulf), which highlights this region as a hotspot of photochemical air pollution.
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