This product provides locations of areas affected by fire including the approximate day of burning. Inputs are daily day time observations from MODIS sensors on Terra and Aqua. Observations are atmospherically corrected and the resulting time series is investigated for sudden changes in reflectance, persistent over multiple days. Variations in observation and illumination geometry are taken into account through application of a kernel driven Bidirectional Reflectance Distribution Function (BRDF) model.
The product consists of monthly rasters of the approximate julian day of burning within the month. Seasonality and bioregional effects are taken into account in the analysis of daily reflectance changes in the satellite data (Maier, 2010). The data can be used to estimate both area of burns (contiguous burn pixels) and time of burns (approximate day a pixel burns). Annual and all-data composites of the monthly files are also provided.
Pixel value indicates the number of days since reference date 1970-01-01
Datasets are monthly, annual and composited from 2002.