ET0 units for the Seasonal Water Yield module

Software Support
1

Hi NCP community!

Is my first time running InVEST, specifically the Seasonal Water Yield module. So I would like to rectify that I’m using the corrects units in the raster files as inputs.
In the documentation is stated that the precipitation fields (12 .tif files, corresponding to each month) should be in mm/year, and that the ET0 (also 12 .tif files corresponding to each month) in mm:

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All my data is in mm/month. This means that I have to convert each of the months to mm/year for the precipitation files, and do I leave the ET0 with mm/month units? Since in the documentation for ET0 only says mm, I’m guessing is for each month.

Thank you so much in advance for your help.

2

Hi @slopez -

Oops! That looks like a typeo in the User Guide, which I’ll fix. Both the precipitation and ET0 inputs to the model are monthly, so your values will be mm/month for both of them.

~ Stacie

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