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[THREDDS #USB-876679]: Current Folder GOES-16 - Products - Sea Surface Temperature Down



Thank you Tom! That's very helpful!

Sean

> Hi Sean and James,
> 
> re:
> > Tom, do you know why the the product names change here,
> 
> The -Mn designator in GOES-R Level 1b (L1b) and Level 2 (L2)
> products' (derived from ABI channels) file names represents the
> operating mode of the ABI instrument onboard the satellite:
> 
> M3 - mode 3 == CONUS sectors every 5 minutes, Full Disk sectors every
> 15 minutes, and either 2 mesoscale sectors every
> minute or 1 mesoscale sector every 30 seconds
> 
> M4 - mode 4 == Full Disk sectors every 5 minutes
> 
> M6 - mode 6 == CONUS sectors every 5 minutes, Full Disk sectors every
> 10 minutes, and either 2 mesoscale sectors every
> minute or 1 mesoscale sector every 30 seconds
> 
> NOAA's original intention was to run the new GOES-R class satellites
> in mode 3 except for occasional periods in mode 4. The new plan is to run
> in mode 6 with occasional periods of mode 4 as full disk scans every
> 10 minutes will allow the U.S. satellites to match the scanning
> schedules of Himawari (Japan) and the upcoming Meteosat Third Generation
> (MTG, Europe) platforms.  I don't believe that NOAA is quite ready to
> change the operating mode for GOES-16/17 to mode 6 permanently just
> yet.
> 
> It might seem that it would be better to name the files without
> inclusion of the ABI instrument's operating mode, but this naming
> scheme is a GOES-R mission standard which is used across NOAA
> including at the PUD and in CLASS.  The name used for L2 products
> is taken from the 'dataset_name' global attribute in each products
> netCDF-4 file.
> 
> re:
> > Thank you for the report! It looks like the new data are there,
> > but their name has changed. The data you see at the top of that
> > catalog start off as:
> >
> > OR_ABI-L2-SSTF-M6
> > (example: 
> > OR_ABI-L2-SSTF-M6_G16_s20190531310174_e20190531409482_c20190531415469.nc)
> 
> This says that the ABI instrument on GOES-16 (G16) was operating in mode 6 
> (M6)
> The time portions of the file name represent:
> 
> s20190531310174
> sCCYYJJJHHMMSSN
> 
> s      - start time
> CCYY   - 2019   - century and year
> JJJ    - 053    - Julian day of the year - February 22
> HHMMSS - 131017 - hour, minute, second
> N      - 4      - tenths of a second
> 
> Apparently, the fractional second part of the name is optional, but I have
> not yet seen any ABI L1b or L2 products without it.
> 
> re:
> > but the data from today (02/24/2019) start off as:
> >
> > OR_ABI-L2-SSTF-M3
> > (latest that I see:   
> > OR_ABI-L2-SSTF-M3_G16_s20190552200315_e20190552256082_c20190552300216.nc)
> 
> This says that the ABI instrument was operating in mode 3.
> 
> s20190552200315
> sCCYYJJJHHMMSSN
> 
> CCYY   - 2019   - century and year
> JJJ    - 055    - Julian day of the year - February 24
> HHMMSS - 220031 - hour, minute, second
> N      - 5      - tenths of a second
> 
> re:
> > We sort the data presented in the catalog lexographically in
> > reverse, such that the newest data appear at the top, as long
> > as the names are consistent up a date being present. In this
> > case, M6 will appear before M3, regardless of the date that
> > comes later in the file name.
> >
> > Tom, do you know why the the product names change here, and
> > possibly why old products are showing up in the current
> > directory?
> 
> If "old" products are showing up in the 'current' directories, it is
> likely due to a deficiency of the process that is scouring old files
> in thase directories.  I thought that I had fixed this so that I was
> using a time sort, but I'll take a look to see if this is not the case.
> 
> Cheers,
> 
> Tom
> --
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Ticket Details
===================
Ticket ID: USB-876679
Department: Support THREDDS
Priority: Normal
Status: Open
===================
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