Hi all, it is time for some conspiracy theories.
NASA GMAO forecasts high concentation of CO at Canary Islands for the following days at the same time (approx 15:00 UTC). It looks like volcano eruptions.
My guess: Yesterday the system automatically added a new source of pollution when volcano exploded and now it assumes that in the following days it will behave in similar way - emit CO. I think that this may work for some industrial sources.
What do you think? :-)