@idefix37 I apologize for the ping on an old thread but thank you so much for the info! I was also looking for the Windy dust mass data source and this was very useful!

Do you happen to know if there is a solid archive of this sort of data that might represent Windy’s dust mass? I found a data source based on GEOS-5 from GES DISC that has about a million dust-related variables. Might just have to experiment a bit.