[307521527494a2a477d30cf082c3a9e] Hi professors, I am currently using CMAQ’s DDM simulation and I found that the simulated O3 concentration as well as NO2 and PM2.5 are very low, what are the areas I should look at to find the problem?

Lower O3 concentration

lizadams March 30, 2025, 7:22pm 2

Marking this as a duplicate post. Lower simulation concentration

Topic		Replies	Views
The simulated ozone concentration is low CMAQ	1	97	March 30, 2025
Extreme low simulated O3 concentration CMAQ	34	3751	February 20, 2025
NO simulated was higher than NO2 CMAQ	1	232	March 1, 2024
Extremely low NO2 concentration CMAQ	5	166	May 15, 2025
Simulation of ozone concentration is low CMAQ	2	477	September 12, 2021