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we're still working on setting up the first Presto encoder attempt from our side and we're facing issues with precipitation as an input. In general, I think there's a bit a of lack on documentation with regards to expected units for inputting data into Presto (like Sentinel-2 required to be in 1E4 scaling, Sentinel-1 required to be in decibels, etc.). I think we figured out most on our own, but for precipitation we're puzzled.
We see the ERA5_DIV_VALUES being 0.03 for precipitation. At the moment, we are feeding just the monthly sum in mm, but after normalization, the values in x explode due to this 0.03 factor. So what's the expected units?
We're using ÀgERA5 instead which is derived ERA5 so I think fairly compatible. But precipitation is daily in mm which we accumulated to monthly values. Thanks for clarifying, I'll convert to m!
Hi guys,
we're still working on setting up the first Presto encoder attempt from our side and we're facing issues with precipitation as an input. In general, I think there's a bit a of lack on documentation with regards to expected units for inputting data into Presto (like Sentinel-2 required to be in 1E4 scaling, Sentinel-1 required to be in decibels, etc.). I think we figured out most on our own, but for precipitation we're puzzled.
We see the
ERA5_DIV_VALUES
being 0.03 for precipitation. At the moment, we are feeding just the monthly sum inmm
, but after normalization, the values inx
explode due to this0.03
factor. So what's the expected units?https://github.com/nasaharvest/presto/blob/613265efac15c8c97a28d94fc2110a2d38e8a5e0/presto/dataops/pipelines/s1_s2_era5_srtm.py#L53:L55
Also note that the commented notebook where the values supposedly come from is inaccessible to us.
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