Forum

Emanuele, There are two things that are required for the refined processing: 1) The availability of the refined ancillary data 2) The monthly calibration updates The MERRA-2 reanalysis updates are done on a monthly basis, with each months data becoming available approximately between the 15th and 20...

AQUA_MODIS.200501001_200501365.L3m.YR.RRS.Rrs_412.4km.nc is not a filename we have ever produced. It should be:
AQUA_MODIS.20050101_20051231.L3m.YR.RRS.Rrs_412.4km.nc

Sean

No, if the pattern begins with "A*" but ends in "*L3b_MO_RRS.nc", you'll get the R2018 data (well, until we delete it).
If you want to get the R2022 data, the pattern should be "*L3b.MO.RRS*". Note the "." where "_" once was...

Sean

Does you pattern start with "A2*" or perhaps ends with "*L3b_MO_RRS.nc"? With R2022, the file naming convention changed: https://oceancolor.gsfc.nasa.gov/docs/filenaming-convention/ For now, we've just marked the R2018 files as obsolete in our database, which keeps them from show...

How are you using the web interface? Are you specifying a search pattern? If so, what is it? BTW, I used it to do the search, just posted the cURL command it spits out for convenience for posting on the forum. The API is the same on the backend. Here's an example for the monthly Rrs_443: curl -d &qu...

They are available:
Sean

The L3 data are available from the L3 browser: https://oceancolor.gsfc.nasa.gov/l3/ ...or from the direct data access pages: https://oceandata.sci.gsfc.nasa.gov/directdataaccess/ (under Level-3 Binned / Mapped, annual files would be in the <YEAR>/001 subdirectories for the sensor) ...or from the fil...

Matt,
The "sd" refers to the "size distribution number". The smaller the number, greater the fine mode aerosol contribution.

Sean

Yes, we do plan to produce the refined product, however we are waiting for the November lunar calibration maneuver before finalizing the calibration assessment. With R2022, we are following the same cadence with refined calibration that we use for the MODIS instruments.

Regards,
Sean

In the l2gen STDOUT output, the "alpha" *is* the angstrom exponent for the model....the product 'alpha' is the polarization angle as Minwei described. The reference for the aerosol models would be: Ahmad, Z., Franz, B. A., McClain,C. R., Kwiatkowska, E. J., Werdell, P. J., Shettle, E.P., &...