Hello, Community! Hope everyone is well!
I am assessing annual water yield ecosystem services in a certain region.
- The input data requires the potential evapotranspiration raster data. Is it possible to directly use the annual composited MODIS16 ET data or some other ET products? The PET value is greater than the ET value. Which dataset is better for the assessment of annual water yield?
- I found that the depth of water yield in the urban area is larger than in other areas. Is it correct? The reason is precipitation? Because the evapotranspiration in the urban area is no-data or filled value. Also, should do the evapotranspiration values in the urban area as zero or no data?
- Are the final outputs largely affected by the scale effect? The input raster data may be different spatial resolutions. Should I make all the data to a united scale (e.g.,1km)?
Thanks a lot.
Looking forward to hearing from you.