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How to convert the 'time_rec' into UTC in Ocean color L3 binned data
Posted: Thu Mar 07, 2024 4:21 am America/New_York
by marincel
How to convert the 'time_rec' into UTC in Ocean color L3 binned data. Thanks for your replies sincerely.
Data demo:
https://oceandata.sci.gsfc.nasa.gov/getfile/AQUA_MODIS.20230130.L3b.DAY.SST.nc
Re: How to convert the 'time_rec' into UTC in Ocean color L3 binned data
Posted: Tue Aug 06, 2024 2:29 pm America/New_York
by OB SeaDAS - dshea
Not sure how useful the time_rec is, but this is what is stored. time_rec is the mean of the time for each pixel added to the bin. Actually, we only use the time for each line. The time is a float of TAI93. That would be the number of TAI seconds since Jan 1, 1993. The normal epoch for TAI is 1958, but 1993 was used as an epoch for the MODIS sensors to make the number smaller. To get to UTC you will have to deal with leap seconds.
don