Articles | Volume 22, issue 2
Atmos. Chem. Phys., 22, 805–821, 2022
Atmos. Chem. Phys., 22, 805–821, 2022

Research article 18 Jan 2022

Research article | 18 Jan 2022

Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

Dongwook Kim et al.

Data sets

The Korea–United States Air Quality (KORUS-AQ) field study (10.5067/Suborbital/KORUSAQ/DATA01) J. H. Crawford, J.-Y. Ahn, J. Al-Saadi, L. Chang, L. K. Emmons, J. Kim, G. Lee, J.-H. Park, R. J. Park, J. H. Woo, C.-K. Song, J.-H. Hong, Y.-D. Hong, B. L. Lefer, M. Lee, T. Lee, S. Kim, K.-E. Min, S. S. Yum, H. J. Shin, Y.-W. Kim, J.-S. Choi, J.-S. Park, J. J. Szykman, R. W. Long, C. E. Jordan, I. J. Simpson, A. Fried, J. E. Dibb, S. Cho, and Y. P. Kim

Short summary
CHOCHO was simulated using a 0-D box model constrained by measurements during the KORUS-AQ mission. CHOCHO concentration was high in large cities, aromatics being the most important precursors. Loss path to aerosol was the highest sink, contributing to ~ 20 % of secondary organic aerosol formation. Our work highlights that simple CHOCHO surface uptake approach is valid only for low aerosol conditions and more work is required to understand CHOCHO solubility in high-aerosol conditions.
Final-revised paper