EGU21-2571
https://doi.org/10.5194/egusphere-egu21-2571
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Enhanced levels of nitrous acid during daytime derived from MAX-DOAS measurements during the AQABA campaign in late summer 2017

Steffen Dörner1, Sebastian Donner1, Lisa Behrens2, Steffen Beirle1, Sergey Osipov1, and Thomas Wagner1
Steffen Dörner et al.
  • 1Max Planck Institute for Chemistry, Satellite Remote Sensing, Mainz, Germany (steffen.doerner@mpic.de)
  • 2University of Bremen, Science Institute of Environmental Physics, Bremen, Germany

During the Air Quality and Climate Change in the Arabian Basin (AQABA) campaign a MAX-DOAS instrument was set up on board of the Kommandor Iona. The ship route covered a variety of regions with different atmospheric compositions: Clean air in the Mediterranean and the Arabian Sea, anthropogenic air pollution near the oil fields in the Arabian Gulf or in areas of dense ship traffic like the Suez Channel or the dust clouds of the nearby deserts in the Red sea. The measured spectra in the UV/VIS spectral range (302 to 467nm) provide sufficient information for the retrieval of aerosol and trace gas profiles. In this study, we focus on evidences of direct nitrous acid emission sources in harbor areas around Jeddah and Kuwait. Since HONO daytime chemistry is debated in recent literature and missing sources are being discussed, we compared the results of the MAX DOAS measurements to WRF-Chem model output in order to identify potential daytime sources in maritime/harbor regions.

How to cite: Dörner, S., Donner, S., Behrens, L., Beirle, S., Osipov, S., and Wagner, T.: Enhanced levels of nitrous acid during daytime derived from MAX-DOAS measurements during the AQABA campaign in late summer 2017, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-2571, https://doi.org/10.5194/egusphere-egu21-2571, 2021.

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