CO Air Quality Change on 1/26/25

Hi All, I am noticing a drastic difference in the CO levels going from 1/25/25 into 1/26/25.
It sudden drops around 100 ppbv across the entire map from 12am to 3am.
Levels have remained lower since then.
Is this a glitch or was it a correction to the data?
Thank you

abot5000
At that time, a new version of the SILAM model was released with a different data processing method and was expected to provide more realistic data.

Here is a list of the most important updates in the model:
- New chemistry scheme
- 3-mode of Fire PM
- CAMS-GLOB-ANT emission inventory
- Refined desert dust source
- CAMS_BIO_v31 biogenic climatology
- CAMS_GLOB_AIR_ANT aviation - refined soil NOx source - improved lightning NOx climatology
- Numerous bug-fixes and refinements in the model code

Ventusky
Excellent!
I appreciate you following up with my question. Thank you