I have noticed that there are a big differences between the forecasting values of the years 2018-2019 against 2020 for 'total_precipitation_surface'.

var dataset = ee.ImageCollection('NOAA/GFS0P25')
                  .filter(ee.Filter.date('2019-01-03', '2019-01-04')) // mean 4~ 8 kg/m^2

                  .filter(ee.Filter.date('2020-01-03', '2020-01-04')) // mean 0.0004 kg/m^2!!!

var Pre_TPS= dataset.select('total_precipitation_surface'); 

Are there some factor that we need apply?

  • Very strange. I'd add a link to a working script and post it to the developer forum, if you haven't already. Apr 6, 2020 at 12:55
  • I have found the exact same error.. Have you found the reason?
    – relima
    May 6, 2020 at 16:42
  • Their database seems to have changed again on July/23/2020. I am applying the factor .divide(10) now.. instead of multiply(10000), which used to be the case.
    – relima
    Jul 26, 2020 at 15:41


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