Evapotranspiration
LivePrecise evapotranspiration measurements from NASA ECOSTRESS for accurate crop water requirement calculations and irrigation optimization.
Update Frequency
3-5 days
Spatial Resolution
70m
Data Source
ECOSTRESS
Coverage
Global
Evapotranspiration Rates
High-resolution ET data from NASA ECOSTRESS mission
Interactive ET map
Water loss through evaporation and transpiration
Understanding ET
Evapotranspiration (ET) is the sum of water evaporation from soil and transpiration from plants, representing total water loss from agricultural systems.
Key Metrics:
- Actual ET (ETa) - Real water loss
- Potential ET (ETp) - Maximum possible loss
- Crop coefficient (Kc) - Crop-specific factor
- Water stress index - ETa/ETp ratio
Agricultural Applications
ET data enables precision irrigation by quantifying exact crop water requirements.
Use Cases:
- Irrigation scheduling precision
- Water budget calculations
- Drought stress detection
- Crop water use efficiency
- Yield prediction modeling
Irrigation Optimization Tips
- •Calculate irrigation needs: Irrigation = ETa - Effective Rainfall
- •Monitor ETa/ETp ratio to detect water stress before visible symptoms
- •Combine with soil moisture data for complete water balance
- •Adjust irrigation timing based on daily ET patterns
Optimize Water Usage
Apply ET data to reduce water waste and improve crop yields