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Evapotranspiration

ZENTRA Cloud follows the standard FAO 56 Penman-Monteith guidelines for calculating evapotranspiration. Users can choose between ETr (alfalfa) reference or ETo (grass) reference depending on preference.

Travis Bates
Updated by Travis Bates
ZENTRA Cloud follows the standard FAO 56 Penman-Monteith guidelines for calculating evapotranspiration. Users can choose between ETr (alfalfa) reference or ETo (grass) reference depending on preference.

Standardized Reference Evapotranspiration Equation:

METER Sensors that support ET:

OR a combination of

ETo

  • Click the environmental model icon.
  • Select ETo or ETr.
  • Enter a name for the model and a name for the chart.
  • The default wind measurement height is 2 meters. Enter a custom value if needed.
  • Select a device. The sensor inputs for Wind Speed, Solar Radiation, Vapor Pressure and Air Temperature will auto-populate. Select different sources for these inputs if necessary.
  • Click Create.

Accumulated ETo

  • Click the Vertical Ellipse icon.
  • Select Stats.
  • Toggle the desired measurements.
  • Click Accept.

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