National Aeronautics and Space Administration

A method for the systematic evaluation of the temporal reporting accuracy and precision of burned area products conducted using active fire detections as the reference data set is described. The method is applied globally to six years of MODIS burned area and active fire product data. The distribution of the time difference between active fire and burned area detections that occur within 90 days is analyzed and summary statistics extracted globally. The median time difference in reporting between the MODIS burned area and the active fire product detections is one day and the majority of MODIS burned area product detections occur temporally close to an active fire detection: 50% within a single day and 75% within four days. Users of the MODIS burned area product with temporal reporting requirements should be aware of these findings if using the approximate day of burning information provided in the burned area product.