Improvements of the RADM1 gas‐phase chemical mechanism

Abstract

The RADM1 gas‐phase chemical mechanism was improved by updating rate constants, introducing photodissociation, incorporating the permutation reactions of organic peroxy radicals, and replacing the lumped NO₃ + N₂O₅ reaction rates expressions with explicit ones. Both the original RADM1 and the revised RADM1 chemical mechanism were compared with the explicit Master Mechanism of NCAR (National Center for Atmospheric Research, USA) using the trace gas concentrations observed at the China Regional Background Atmospheric Observatory as model initial conditions. It was shown that the revised RADM1 chemical mechanism was much better than the original in modeling atmospheric chemistry, especially on ozone, for the China region.

Key words:

• RADM1
• chemical mechanism
• modeling

Notes

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