MODIS Annual Chl Data
Posted: Tue Dec 16, 2025 10:55 am America/New_York
Now that the OBDAAC data has been moved to earthdata, where can I find annual chlorophyll from MODIS. I tried searching for it, but couldn't find the dataset.
The annual chlorophyll-a (Chl-a) data are included in the MODIS L3m Chl-a collection (DOI: 10.5067/AQUA/MODIS/L3M/CHL/2022.0).
You can identify and filter the annual products by searching for granule IDs that match the pattern:
*.L3m.YR.CHL.chlor_a.*
For additional details on the naming structure, this page may be helpful:
https://oceancolor.gsfc.nasa.gov/resources/docs/filenaming-convention/