matchup extraction for SEAWIFS does not work

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andrei_mitrich
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matchup extraction for SEAWIFS does not work

by andrei_mitrich » Tue Jun 24, 2025 11:23 am America/New_York

Hi, I am trying to extract matchups for Rrs for few sensors against in-situ MOBY data. Some time ago, maybe a year, all the tools worked for all sensors I tried: MODISA, MERIS, SEAWIFS, VIIRS(N/J1/J2). After some changes on NASA site, first stopped previously working commands with `_L2_oc` pattern; this is still all right for me, at least this is working for L1 patterns. However, for SeaWiFS I cannot produce matchup file list for any pattern; here is an example, previously working with `fd_matchup.py` or directly sending request to the relevant URL:

find_scenes_nasa("1998-04-01T00:00:00","1998-05-05",-8,52,"ORBVIEW-2","SEAWIFS*","SEAWIFS")
URL: https://cmr.earthdata.nasa.gov/search/granules.json?page_size=2000&provider=OB_DAAC&point=-8,52&instrument=SEAWIFS&platform=ORBVIEW-2&short_name=SEAWIFS*&options[short_name][pattern]=true&temporal=1998-04-01T00:00:00,1998-05-05&sort_key=short_name&day_night_flag=DAY
Out[783]: []


Previously the same querry returned some results:

['S1998091123939.L1A_GAC',
'S1998092132425.L1A_GAC',
'S1998093123012.L1A_GAC',
...

I also tried the updated version of `fd_matchup` - `find_matchup`, now coming with SeaDAS, I think, sinse v8 - the same [negative] outcome, cannot find anything.

Is matchup making for SEAWIFS not available anymore or I am still doing something wrong? For all other sensors I tested, about 7 totally, this extraction works, to some extent. The data themselves for SeaWiFS are still available online.

Could my problem relate to SeaWiFS file name format recently updated and that is why proper access still not fixed?

Thank you.
Cheers,
Andrei

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OB ODPS - towens
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Re: matchup extraction for SEAWIFS does not work

by OB ODPS - towens » Tue Jun 24, 2025 12:10 pm America/New_York

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_size=2000&provider=OB_CLOUD&point=-8,52&instrument=SeaWiFS&platform=ORBVIEW-2&short_name=SeaWiFS_L1_GAC&options[short_name][pattern]=true&temporal=1998-04-01T00:00:00,1998-05-05&sort_key=short_name&day_night_flag=DAY&pretty=true" -O -

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