USGS MODIS ET
Datasets:
Description: Remote sensing derived evapotranspiration dataset based on MODIS-thermal imagery and global weather datasets. Climate Engine is using version 5 of the global ET product.
Organization: United States Geological Survey (USGS)
Website: FEWS NET page
Google Earth Engine:
Spatial resolution: 1-km grid (1/96-deg)
Time Span: 2003 to 2023 (updated every 10-12 days)
Variables:
- ETa: Actual Evapotranspiration (mm)
Terms of Use:
- USGS-authored or produced data and information are considered to be in the U.S. Public Domain.
References:
- Senay, G.B., Kagone S., Velpuri N.M., 2020, Operational Global Actual Evapotranspiration using the SSEBop model: U.S. Geological Survey data release, https://doi.org/10.5066/P9OUVUUI. Publication: https://www.mdpi.com/1424-8220/20/7/1915
- Senay, G. B., Budde, M. E., & Verdin, J. P. (2011). Enhancing the Simplified Surface Energy Balance (SSEB) approach for estimating landscape ET: Validation with the METRIC model. Agricultural Water Management, 98(4), 606-618.
- Senay, G. B., Budde, M., Verdin, J. P., & Melesse, A. M. (2007). A coupled remote sensing and simplified surface energy balance approach to estimate actual evapotranspiration from irrigated fields. Sensors, 7(6), 979-1000.
- Velpuri, N. M., Senay, G. B., Singh, R. K., Bohms, S., and Verdin, J. P. (2013). A comprehensive evaluation of two MODIS evapotranspiration products over the conterminous United States: Using point and gridded FLUXNET and water balance ET, Remote Sensing of Environment, 139, 35-49, (Abstract and Article)
Notes
- Actual ET (ETa) is produced using the operational Simplified Surface Energy Balance (SSEBop) model (Senay et al., 2013) for the period 2003 to present.
- The SSEBop setup is based on the Simplified Surface Energy Balance (SSEB) approach (Senay et al., 2007, 2011) with unique parameterization for operational applications using a principle that is comparable to psychometry. A comprehensive evaluation of the model was conducted by Velpuri et al. (2013).
- The global ET is derived from the integration of MODIS-based (Aqua) land surface temperature, maximum air temperature from WorldClim, and reference ET derived from global data assimilation systems(GDAS).