Published on 2 September 2019
NASA's Ecosystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) captured imagery of fires in the Amazon regions of Brazil and Bolivia on Aug. 23, 2019.
The red areas in the images—in eastern Bolivia and northern Brazil—are where surface temperatures exceeded the maximum measurable temperature of the instrument's sensor (approximately 220 degrees Fahrenheit, or 104 degrees Celsius), highlighting the burning areas along the fire fronts. The dark, wispy areas indicate thick smoke—thick enough to obscure much of the fire from view. The measurements cover areas of about 77 by 77 yards (70 by 70 meters) each, or about the size of a football field.