Evapotranspiration (ETo and ETc) Workflow
Why measure evapotranspiration?
Evapotranspiration measures the amount of water lost over a period of time by an area covered by crops (ETc) or a reference grass area (ETo). For over 30 years, the FAO has adopted the Penman-Monteith calculation as the preferred methodology for the calculation of al forms of evapotranspiration. Using this robust and reliable method, ICT International has applied the Penman-Monteith calculation to IoT enabled sensor data. This enables near real-time data to be collected for analysis, in conjunction with multiple sensor data inputs, visualised for decision making or subsequent analysis.
The workflow is compatible with the following sensors:
- SNiP-AWS5L with Pyranometer for solar radiation
- SNiP-MCS with ATH2S for temperature and humidity, AWS200 weather station for wind speed, and pyranometer.
Both these are available with LoRaWAN or NB-IoT connectivity for Internet of Things connection options.
![Daily ETo using Eratos](https://ictinternational.com/wp-content/uploads/2023/08/Daily-ETo-using-Eratos-1024x416.png)
![](https://ictinternational.com/wp-content/uploads/2023/03/ATH-S2-Air-Temp-Humidity-Installed-on-pole-400x400.webp)
ATH Temperature and Relative Humidity Sensors
![Sap Flow Dashboards (all) in Eratos](https://ictinternational.com/wp-content/uploads/2023/08/Sap-Flow-Dashboards-all-in-Eratos-400x400.png)
Eratos Data Platform and Dashboard
![SNiP-AW5-SL Schematic Sensor AWS500 Node Package](https://ictinternational.com/wp-content/uploads/2023/05/SNiP-AW5-SL-Schematic-Sensor-AWS500-Node-Package-400x400.webp)
IoT AWS5 Automatic Weather Station
![Meteorological SNiP MC24](https://ictinternational.com/wp-content/uploads/2023/03/Meteo-SNiP-MC24-400x400.webp)