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If I run: ncdump -h https://oceandata.sci.gsfc.nasa.gov/opendap/PACE_OCI/L3SMI/2024/0401/PACE_OCI.20240401.L3m.DAY.CHL.V3_0.chlor_a.0p1deg.nc Note: no .dmr I get the headers: netcdf PACE_OCI.20240401.L3m.DAY.CHL.V3_0.chlor_a.0p1deg { dimensions: eightbitcolor = 256 ; lat = 1800 ; lon = 3600 ; rgb = ...

Status 110 is typically returned when there is no data to process.

A2023235064000.L1A_LAC is a night granule so the visible bands are not available

Tommy

The two files are made by different processes and my not have matching values in the seconds position of the time string.
Try putting a wildcard for the seconds in the CLD file name.

PACE_OCI.20250704T115719.L2.CLD.V3_0.NRT.nc

Tommy

I only have access to the the V3.0 version of the data. Can you confirm that the problem exists in the V3.0 data as well?

Tommy

Are you using an outdated version of ncdump? ./PACE_OCI.20240912T171957.L2.OC_AOP.V3_0.nc wavelength_3d = 346, 348, 351, 353, 356, 358, 361, 363, 366, 368, 371, 373, 375, 378, 380, 383, 385, 388, 390, 393, 395, 398, 400, 403, 405, 408, 410, 413, 415, 418, 420, 422, 425, 427, 430, 432, 435, 437, 440,...

The products were reprocessed with the latest chlor_a algorithm, so changes of that scale would not be unexpected.

Tommy

The CHL files were reprocessed in 2022.

Details of the file name changes:
https://oceancolor.gsfc.nasa.gov/resources/docs/filenaming-convention/

Can you be more specific about the value changes you are seeing?

Tommy

If a fuzzy match on filenames doesn't work for you, you could download the L2 file first, and read the "ifile:" from the L2 metadata to ascertain the parent.
e.g.:
:ifile = "PACE_OCI.20250207T001005.L1B.V3.nc" ;
:ofile = "PACE_OCI.20250207T001009.L2.CLD.V3_0.nc" ;

Tommy

The L1B have the scheduled time of the granule in the name. The L2 names reflect the actual start time of usable data, which may differ from the scheduled time of the granule.

Tommy

The Ocean Color archive has migrated to the NASA Cloud so some search terms have changed provider is now "OB_CLOUD" instrument=SeaWiFS short_name like "SeaWiFS_ L1 file names like: SEASTAR_SEAWIFS_GAC.19980504T123211.L1A.nc wget "cmr.earthdata.nasa.gov/search/granules.csv?page_si...