Scorch height and volume modeling in prescribed fires: Effects of canopy gaps in Pinus pinaster stands in Southern Europe

•Fire intensity and air temperature have a great influence on scorch height.•The presence of canopy gaps results in scorch height differences.•The scorch height increases because of the canopy gaps in the upper slope.•The scorch volume varies based on fire intensity, air temperature and canopy base height.•The scorch height and volume play an important role in prescribed burn windows.