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Up Topic Products and Algorithms / Satellite Data Products & Algorithms / MODIS DB production problems with OCSSW
- By liamgumley Date 2020-12-01 21:43
Production of MODIS direct broadcast (DB) Level 1 data with the OCSSW v7.5.3 processing software halted early on 01-DEC-2020. Early indications point to an out-of-date version of de200.dat and therefore de200.eos. See below:
https://lance.modaps.eosdis.nasa.gov/news/
https://wiki.earthdata.nasa.gov/display/DAS/Planetary+Ephemeris+Data
- By seanbailey Date 2020-12-01 22:03
Yes, just pushed a fix to our operational processing system.  An updated planetary ephemeris file will be made available to SeaDAS users tomorrow (shift whistle just blew :grin:)

As the LANCE post mentions, the ephemeris was *supposed* to be valid until Jan 1st 2021...for some reason not yet identified (or explained to me) MODIS GEO decided to go bonkers a month early.
BTW, the full ephemeris that is used is actually valid until 31 March 2169 ...someone made "an executive decision" to have the version used by MODIS truncated...

Sean
Up Topic Products and Algorithms / Satellite Data Products & Algorithms / MODIS DB production problems with OCSSW