Evapotranspiration products

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maryam1374
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Evapotranspiration products

by maryam1374 » Wed Nov 03, 2021 5:39 am America/New_York

Hello
I need total potential evapotranspiration (PET) Data from the MOD16A2 and MYD16A2 products. But the range of this data is from -32767 to 32700. what does to obtain the actual value?

best regards,
maryam Aminfanak

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ASDC - ingridgs
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Re: Evapotranspiration products

by ASDC - ingridgs » Wed Nov 03, 2021 10:26 am America/New_York

Dear user,

You can find MOD16A2 data here:
https://search.earthdata.nasa.gov/searc ... A2&ac=true

You can find MYD16A2 data here:
https://search.earthdata.nasa.gov/searc ... A2&ac=true

I don't understand what you mean with: "But the range of this data is from -32767 to 32700. what does to obtain the actual value?"
Please, elaborate and let us know if you need anything further.

Thank you,

GES DISC - jimacker
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Re: Evapotranspiration products

by GES DISC - jimacker » Wed Nov 03, 2021 4:06 pm America/New_York

Numbers such as -32767 and 32700 in a data file are frequently indicative of missing data for that pixel.

ASDC - ingridgs
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Re: Evapotranspiration products

by ASDC - ingridgs » Thu Nov 04, 2021 10:22 am America/New_York

Dear user,

Please look at the Product page description:
https://lpdaac.usgs.gov/products/mod16a2v006/
Screen Shot 2021-11-04 at 10.20.02 AM.png
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The "Layers" section state that "Users are asked to disregard the class assignments for Fill Values 32761 through 32767 irrespective of the assigned quality for these pixels. Class assignments may be incorrect and users are advised to exercise caution while using the product in their application. See known issue PM_MOD16_18074 for further information."
Please see https://landweb.modaps.eosdis.nasa.gov/ ... 1629894289 for detailed information.

Thank you,

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