Tecnobosque Wildfire Knowledge Graph · Remote Sensing & Mapping
Reference Concept · v1.0Definition → relationship → calculation → evidence context
A spectral index using near-infrared and shortwave-infrared reflectance to highlight vegetation condition and fire-related change.
NBR
What is normalized burn ratio (nbr)?
A spectral index using near-infrared and shortwave-infrared reflectance to highlight vegetation condition and fire-related change.
For Tecnobosque, normalized burn ratio (nbr) is useful only when its source, spatial context and observation or modelling window are stated. The same label can otherwise hide important differences between field observations, remote sensing, forecasts and reconstructed incident evidence.
Why it matters
Normalized Burn Ratio (NBR) is useful because it separates one specific part of wildfire behaviour, exposure, operations or evidence from nearby concepts that can otherwise be mixed together.
A spectral index using near-infrared and shortwave-infrared reflectance to highlight vegetation condition and fire-related change.
NBR = (NIR − SWIR) ÷ (NIR + SWIR)Band assignments depend on the sensor. Use geometrically and radiometrically compatible imagery.
What changes normalized burn ratio (nbr)?
Field observation, remote sensing, model output and retrospective reconstruction can produce values with different assumptions and uncertainty.
A point, parcel, fire-front segment, incident perimeter and regional product can represent very different physical scales.
Wildfire conditions evolve rapidly, so timestamps and averaging periods are part of the meaning of the value.
How to interpret normalized burn ratio (nbr)
- Identify exactly what object or process the value describes.
- Check units, spatial scale, timestamp and source before comparing values.
- Separate direct observations from modelled or reconstructed estimates.
- Preserve uncertainty and later revisions instead of overwriting earlier evidence.
What normalized burn ratio (nbr) cannot tell you by itself
- Normalized Burn Ratio (NBR) is not a complete description of wildfire hazard or risk by itself.
- Values from different methods or scales may not be directly comparable.
- A technically precise number can still be misleading when context or uncertainty is omitted.
Normalized Burn Ratio (NBR) FAQ
Is normalized burn ratio (nbr) one fixed value for an entire wildfire?
Usually not. Wildfire conditions vary in space and time, so the value should be attached to a defined place, object and observation period.
Can normalized burn ratio (nbr) be used alone for an emergency decision?
No. Operational decisions require current local authority information and a wider set of conditions than a single technical concept can provide.