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|Satellites reveal Russian fires worst in 14 years
|More wildfires have burned around the Russian capital this year than in the last decade and a half, according to sensors aboard ESAâ€™s observation satellites.
|The forest and peat bog fires ignited this summer amid an unprecedented heat wave of
up to 40ÂºC.
Working like thermometers in the sky, the Along Track Scanning Radiometer and the Advanced Along Track Scanning Radiometer on ESAâ€™s ERS-2 and Envisat satellites measure thermal-infrared radiation to take the temperature of Earthâ€™s land surface.
Flames reach temperatures that are detected by these sensors and confirm the
presence of fire.
The atlas is an important scientific resource because fires have a significant
impact on global atmospheric pollution, with biomass burning contributing to the
global budgets of greenhouse gases such as like carbon dioxide.