Unable to view contents of L3 DAY CyAN NetCDFs

Use this Forum to find information on, or ask a question about, NASA Earth Science data.
Post Reply
meg_amanatides
Posts: 3
Joined: Tue Apr 25, 2023 6:32 pm America/New_York
Answers: 0

Unable to view contents of L3 DAY CyAN NetCDFs

by meg_amanatides » Wed Nov 29, 2023 5:42 pm America/New_York

I'm attempting to access S3A CyAN data through the Advanced tab of the Ocean color file search page accessed on 11/29/2023 (https://oceandata.sci.gsfc.nasa.gov/api/file_search/). However, I haven't been able to read any of the NetCDF files after downloading. Given the example file S3A_OLCI_EFRNT.20221130.L3b.DAY.CYANV5.nc, I run into the following error in SeaDAS: "No appropriate product reader found. File can not be opened."; the following error in ArcGIS Pro: "The input netCDF file does not have a valid variable."; and the following error in R: "Error in ncvar_type_to_string(rv$precint) : Error, unrecognized type code of variable supplied: -1."

Tags:

OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 651
Joined: Tue Feb 09, 2021 5:42 pm America/New_York
Answers: 1
Been thanked: 2 times

Re: Unable to view contents of L3 DAY CyAN NetCDFs

by OB SeaDAS - xuanyang02 » Thu Nov 30, 2023 11:18 am America/New_York

SeaDAS does not provide a reader for L3b files. You can use l3mapgen to create L3m files from L3b, which SeaDAS can read -- https://seadas.gsfc.nasa.gov/help-8.4.0/processors/ProcessL3mapgen.html

See this post too -- viewtopic.php?p=12218&hilit=l3b#p12218

Post Reply