Global 30-m burned area distribution in 2020 (GBA30_2020)

Burned area refers to the land area where vegetation has been burned by fire, including forest burned area, grassland burned area and farmland burned area. The 2020 burned area products include all burned area that occurred in that year.The dataset was generated with all available Landsat 7/8 satellite data acquired from January 1 to December 31, 2020, i.e., full time series Landsat 7/8 satellite data.According to the characteristics of global ecosystem distribution and fire behavior, burned and unburned samples were selected in different regions of the world. Samples of burned areas include burned areas of different types, with different burned degrees and recovery periods. Samples of unburned areas contain various land cover types, including vegetation, water, bare land, especially the cover types that are easy to be confused with burned area, such as topographic shadows, built up area, and so on.Using multi-source sensitive parameters for burned area extraction (band surface reflectance, NBR, NBR2, BAI, MIRBI, etc.), the random forest algorithm is employed for sample training and learning to get the recognition rules and seed points of the burned land,and the regional growth method is carried out to obtain the spatial distribution of burned areas.