Although the WRF-Chem model is conceptually relatively straightforward the details are less so. Updating the chemistry routine to include the atmospheric reactions of mercury in the atmosphere is not simple, especially as it seems that new updates are published every couple of months, “Improved Mechanistic Model of the Atmospheric Redox Chemistry of Mercury” Shah et al., ES&T, Article ASAP, DOI: 10.1021/acs.est.1c03160, published online on August 17th, 2021!

The next problem to solve is the linking of recently described photochemical reactions in the reaction scheme to the photolysis routine, and solar radiation intensity calculation scheme. More news to follow…..

For testing purposes, we are currently working on a relatively simple (and low resolution) domain which covers Europe and the Mediterranean, with a higher resolution nested domain over where we work!


By Prasad Shelke (ESR 12)