NBR-RAW (Normalized Burn Ratio)
// Normalized Difference NIR/SWIR Normalized Burn Ratio (abbrv. NBR)
// General formula: (NIR - SWIR) / (NIR + SWIR)
// URL https://www.indexdatabase.de/db/si-single.php?sensor_id=96&rsindex_id=53
let index = (B08 - B12) / (B08 + B12);
return[index]Evaluate and visualize
General description of the script
To detect burned areas, the NBR-RAW index is the most appropriate choice. Using bands 8 and 12 it highlights burnt areas in large fire zones greater than 500 acres. To observe burn severity, you may subtract the post-fire NBR image from the pre-fire NBR image.
Values description: Darker pixels indicate burned areas.
NBR = (B08 - B12) / (B08 + B12)
Description of representative images
NBR-RAW, Italy. Acquired on 08.10.2017, processed by Sentinel Hub.
