Fire Dynamics & Impact

Fire severity describes the immediate impact of fire on vegetation. The MODIS Fire severity product provides two classes – non-severe and severe. Non-severe fires only impacted the understorey while severe fires have impacted the tree canopy as well.

Statewide annual composite of fire scars (burnt area) derived from all available Landsat images in each year. This product may assist the development of appropriate fire management practices and benefit a range of conservation and resource management objectives.

Grassland curing is the dead fraction of grassland, expressed as a percentage, strictly by dried weight. Data is provided for five alternative algorithms: four developed by the Bushfire CRC Project A1.4 on grassland curing (methods A, B, C, D), and one developed by the Victorian Country Fire Authority (MapVictoria).

Estimates the approximate date of burning and creates a map of the spatial extent of recent fires. The algorithm identifies rapid changes in the daily surface reflectance dynamics.

Locations of fire based on absolute detection of a fire (when the fire strength is sufficient to detect), and on detection relative to its background (to account for variability of the surface temperature and reflection by sunlight).

Fire Frequency provides the average number of fires affecting an area in a given time period. It is derived from the whole time series of AVHRR burnt area maps.

An estimate of the fraction of a pixel that has been burnt. Derived from spectral unmixing of daily MODIS observations.

Estimates the approximate date of burning and creates a map of the spatial extent of recent fires. The combined use of active-fire and reflectance data enables the algorithm to adapt regionally over a wide range of pre- and post-burn conditions and across multiple ecosystems.

Locations of areas affected by fire in near real-time, usually available within 2h of the satellite overpass.

Locations of areas affected by fire including the approximate day of burning. The MODIS time series is investigated for sudden changes in reflectance, persistent over multiple days.