MODIS L3m DAY CHL chlor_a and MODIS L3b DAY. The CHL Difference

[2120221999]

Hello, I want to ask some questions to everyone, I use modis chlorophyll products for the first time, I downloaded two modis chlorophyll products on the official website as follows, the file names are: AQUA_MODIS.20190101.L3m.DAY.CHL.chlor_a.9km.nc and AQUA_ MODIS.20190101.L3b.DAY.CHL.nc, I want to know the difference between these two NC files, because I didn't understand their introduction, can you help me explain the difference, and I don't know what variables are included in these two NC files, because I use them for the first time, so I don't understand a lot.

[OB SeaDAS - xuanyang02]

When you bin all the files like AQUA_MODIS.20190101T002000.L2.OC.nc on the day 20190101 by the product chlor_a, you get AQUA_ MODIS.20190101.L3b.DAY.CHL.nc

When you map the AQUA_ MODIS.20190101.L3b.DAY.CHL.nc file, you get AQUA_ MODIS.20190101.L3m.DAY.CHL.nc, which could be visualized by SeaDAS