Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 16, issue 3
Articles | Volume 16, issue 3
https://doi.org/10.5194/gmd-16-927-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-16-927-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 3
Model evaluation paper
 | 
06 Feb 2023
Model evaluation paper |  | 06 Feb 2023

Implementation of HONO into the chemistry–climate model CHASER (V4.0): roles in tropospheric chemistry

Phuc Thi Minh Ha, Yugo Kanaya, Fumikazu Taketani, Maria Dolores Andrés Hernández, Benjamin Schreiner, Klaus Pfeilsticker, and Kengo Sudo

Supplement

https://doi.org/10.5194/gmd-16-927-2023-supplement

Data sets

Application for Request of Data or Samples Obtained by JAMSTEC's Research Vessels and Submersibles Japan Agency for Marine-Earth Science and Technology http://www.godac.jamstec.go.jp/darwin/e

EMeRGe (Effect of Megacities on the Transport and Transformation of Pollutants on the Regional to Global Scales) Institut für Umweltphysik https://www.iup.uni-bremen.de/emerge/home/halo_payload.html

Model code and software

Effects of heterogeneous reactions on global tropospheric chemistry (CHASER-V4.0) T. M. P. Ha, F. Taketani, Y. Kanaya, R. Matsuda, and K. Sudo https://doi.org/10.5281/zenodo.4153452

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Short summary
HONO affects tropospheric oxidizing capacity; thus, it is implemented into the chemistry–climate model CHASER. The model substantially underpredicts daytime HONO, while nitrate photolysis on surfaces can supplement the daytime HONO budget. Current HONO chemistry predicts reductions of 20.4 % for global tropospheric NOx, 40–67 % for OH, and 30–45 % for O3 in the summer North Pacific. In contrast, OH and O3 winter levels in China are greatly enhanced.
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