Peng, Q., Palm, B. B., Fredrickson, C. D., Lee, B. H., Hall, S. R., Ullmann, K., … Thornton, J. A. (2022). Direct constraints on secondary HONO production in aged wildfire smoke from airborne measurements over the Western US. Geophysical Research Letters, 49, e2022GL098704. doi:10.1029/2022GL098704