Daily Evapotranspiration Estimates for Contiguous United States at 70-Meter Resolution

ECOSTRESS data from the International Space Station provides daily evapotranspiration (ET) estimates for the Contiguous United States. The product is generated by NASA's LPCLOUD using a physics-based Two-Source Energy Balance model applied to land surface temperature and other remote sensing inputs. Data collection began after the instrument's launch in June 2018.

Use Cases

• Estimating crop-water use by analyzing the Evapotranspiration Daily variable across agricultural regions.
• Monitoring vegetation water stress and drought early-warning by tracking daily ET anomalies over time.
• Validating land surface models using the 70-meter resolution Evapotranspiration Daily and Evapotranspiration Daily Uncertainty fields.
• Studying phenology by correlating ET estimates with NDVI and albedo data from the STARS fusion product.

Strengths

• Spatial resolution of 70 meters over the Contiguous United States.
• Derived from a physics-based model (Two-Source Energy Balance) using multiple remote sensing inputs.

Limitations

• Contains data acquisition gaps due to instrument anomalies in 2018 and 2019.
• Geographic coverage is limited to the Contiguous United States (CONUS).

Provenance

Source

NASA ECOSTRESS mission on the International Space Station, processed by LPCLOUD.

Collection Method

Generated by the DisALEXI algorithm applying a Two-Source Energy Balance model to Level 2 land surface temperature, NDVI, albedo, and reanalysis meteorology.

Time Range

Data acquisition began after launch in June 2018.

Freshness

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Geography

Contiguous United States (CONUS), projected to a 0.0006° grid.