Very High-Resolution Thermal Infrared Image, Fire Line Temperature
A single very high-resolution thermal infrared image shows the temperature of the fire line. When used with a time series of images, rate of flame spread, fire intensity and temperature can be calculated. Temperature gradient in Celsius (C) to the right and denotes 150 C (black/purple), 415 C (red/orange) and 680 C (yellow/off-white).
High-resolution photo captured by DJI S1000 UAS with a "Kolibri" sensor.