Thermography›Canopy–Air Temperature Difference
Canopy–Air Temperature Difference (ΔT)
Compute the canopy-to-air temperature difference (ΔT) for water stress interpretation. A negative ΔT indicates active transpirational cooling; a positive ΔT signals stomatal closure and increasing water stress.
Input: Grayscale JPEG/PNG from thermal camera + camera T range + ambient air temperature (T_air) at time of capture. T_air should be measured at canopy height with a shaded thermometer or weather station.
Thermal Image
Temperature Range (°C)
Enter the min/max temperature shown on your camera display when the image was captured.
Air Temperature (T_air)
°C
Add a thermal image to begin
Provide a thermal image, temperature range, and the ambient air temperature. ΔT and water stress classification are computed instantly.