Articles | Volume 21, issue 20
Atmos. Chem. Phys., 21, 15809–15826, 2021
Atmos. Chem. Phys., 21, 15809–15826, 2021
Research article
22 Oct 2021
Research article | 22 Oct 2021

Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China

Shuping Zhang et al.

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Cited articles

An, J., Li, Y., Chen, Y., Li, J., Qu, Y., and Tang, Y.: Enhancements of major aerosol components due to additional HONO sources in the North China Plain and implications for visibility and haze, Adv. Atmos. Sci., 30, 57–66,, 2012. 
Anttila, T., Kiendler-Scharr, A., Tillmann, R., and Mentel, T. F.: On the Reactive Uptake of Gaseous Compounds by Organic-Coated Aqueous Aerosols: Theoretical Analysis and Application to the Heterogeneous Hydrolysis of N2O5, J. Phys. Chem. A, 110, 10435–10443,, 2006. 
Appel, W., Bhave, P., Gilliland, A., Sarwar, G., and Roselle, S.: Evaluation of the community multiscale air quality (CMAQ) model version 4.5: Sensitivities impacting model performance, Part II – particulate matter, Atmos. Environ., 42, 6057–6066,, 2008. 
Bao, F. X., Li, M., Zhang, Y., Chen, C. C., and Zhao, J. C.: Photochemical Aging of Beijing Urban PM2.5: HONO Production, Environ. Sci. Technol., 52, 6309–6316,, 2018. 
Bernard, F., Cazaunau, M., Grosselin, B., Zhou, B., Zheng, J., Liang, P., Zhang, Y., Ye, X., Daële, V., Mu, Y., Zhang, R., Chen, J.-M., and Mellouki, A.: Measurements of nitrous acid (HONO) in urban area of Shanghai, China, Environ. Sci. Pollut. Res., 23, 5818–5829,, 2015.  
Short summary
Six heterogeneous HONO chemistry updates in CMAQ significantly improve HONO concentration. HONO production is primarily controlled by the heterogeneous reactions on ground and aerosol surfaces during haze. Additional HONO chemistry updates increase OH and production of secondary aerosols: sulfate, nitrate, and SOA.
Final-revised paper