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Evaporation and Evapotranspiration Monitoring System

Introduction to the Evaporation and Evapotranspiration Monitoring System

The Evaporation and Evapotranspiration Monitoring System is a comprehensive and advanced solution for measuring actual evapotranspiration (ET). Unlike indirect methods that estimate ET based on vegetation indices, canopy coverage, or meteorological models, this system delivers real-time, direct, and accurate measurements of evaporation and transpiration, supporting efficient water management in agriculture, environmental research, and water resource monitoring.


Operating Principle

The system utilizes evapotranspiration sensors applying the Eddy Covariance method to directly measure real-time ET data. These sensors operate at high-frequency sampling rates and provide processed outputs every 30 minutes. The data is automatically transmitted to a central data acquisition and management unit, enabling users to access, share, and download information remotely.


Applications

  • Precision Irrigation Management: Delivers accurate data on the actual water needs of crops. Captures fluctuations in crop physiological responses through stomatal transpiration, often missed by indirect methods, helping to optimize irrigation schedules and water usage.

  • Seasonal Water Budgeting: Assesses actual water consumption to develop effective resource allocation plans.

  • Drought Monitoring: Enables early detection of drought conditions and supports timely deployment of mitigation strategies.

  • Remote Sensing Validation: Compares and calibrates satellite or UAV-derived remote sensing data with ground-truth ET measurements.

  • Carbon Credit Verification and Water-Saving Certification: In programs such as Verra or Gold Standard for water-saving credits, the system functions as an MRV (Measurement, Reporting, Verification) tool, providing ET data to substantiate savings and ensure transparency.

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