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E3SM-Project / v3atm

Fork of E3SM for testing v3 atm changes
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Modify chemUCI mechanisms to meet thermal decomp reaction requirements #5

Closed tangq closed 1 year ago

tangq commented 1 year ago

The chemistry pre-processor requires "M" (air mass) on both sides of thermal decomposition reactions, which is a non-standard format. This commit changes in all chemUCI mechanism files the reactions of uci7, uci8, and uci9 for HO2NO2, N2O5, and PAN. The PAN reaction rate (uci9) has been verified with the ATom data.

This PR greatly improves the chemistry fields needed by new aerosol features (e.g., nitrate and SOA).

[non-BFB]

(cherry picked from commit f2ed7130003b7c09023b9a5e43a1a3f9c067e346)

keziming commented 1 year ago

@mingxuanwupnnl we can change these chemistry files to add M in uci7~9 reactions by another PR, as well as the ucih1~3 reactions. The next PR should include analysis of its impact on OZONE distribution in chemUCI and its impact on MOSAIC nitrate budget. I hope it can help SOA too.

wlin7 commented 1 year ago

Merged to NGD_v3atm