Search found 1360 matches

by OB.DAAC - SeanBailey
Fri Nov 04, 2022 12:53 pm America/New_York
Forum: Questions/Comments
Question: Forward stream of L2 OC SNPP/VIIRS and NOAA20/VIIRS
Replies: 3

Re: Forward stream of L2 OC SNPP/VIIRS and NOAA20/VIIRS

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...
by OB.DAAC - SeanBailey
Fri Nov 04, 2022 8:59 am America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

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
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 3:43 pm America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

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
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 2:26 pm America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

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...
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 2:04 pm America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

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...
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 1:19 pm America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

They are available:

Code: Select all

curl -d "std_only1&subType1&sdate=2002-08-01&edate=2022-11-01&dtype=L3b&dtid=1042&search=*L3b.MO.RRS.nc &sensor_id=7&results_as_file=1" https://oceandata.sci.gsfc.nasa.gov/api/file_search
Sean
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 11:25 am America/New_York
Forum: Questions/Comments
Question: Level-3 annual Rrs data
Replies: 15

Re: Level-3 annual Rrs data

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...
by OB.DAAC - SeanBailey
Thu Nov 03, 2022 8:21 am America/New_York
Forum: Questions/Comments
Question: SeaDAS atmospheric correction algorithms
Replies: 6

Re: SeaDAS atmospheric correction algorithms

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

Sean
by OB.DAAC - SeanBailey
Wed Nov 02, 2022 3:24 pm America/New_York
Forum: Questions/Comments
Question: Forward stream of L2 OC SNPP/VIIRS and NOAA20/VIIRS
Replies: 3

Re: Forward stream of L2 OC SNPP/VIIRS and NOAA20/VIIRS

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
by OB.DAAC - SeanBailey
Wed Nov 02, 2022 3:13 pm America/New_York
Forum: Questions/Comments
Question: SeaDAS atmospheric correction algorithms
Replies: 6

Re: SeaDAS atmospheric correction algorithms

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., &...