ATSR-2 and AATSR World Fire Atlas products, validation, consistency and statistics
Olivier Arino(1) , Stephen Plummer(2)
, and Diane Defrenne(3)
via Galileo Galilei,
(2) IGBP, via Galileo Galilei, 00044 Frascati, Italy
(3) Serco, via Galileo Galilei, 00044 Frascati, Italy
'Greenhouse gases', especially carbon dioxide, are intimately connected to climate change. To predict future climate change accurately and find ways to manage the concentration of atmospheric carbon dioxide, the processes and feedbacks that drive the carbon cycle must first be understood. Understanding the spatial and temporal patterns of carbon fluxes and other trace gases is essential to inform the policy process. However, our current knowledge of spatial and temporal patterns is uncertain, particularly over land and particularly for what regard disturbance phenomena such as fire.
The European Space Agency ATSR World Fire Atlas project has been established to extend the unique ten-year World Fire Atlas (WFA) fire archive, already generated with the second Along-Track Scanning Radiometer (ATSR-2) using the advanced ATSR (AATSR) sensor on board ENVISAT. It is anticipated that this will continue the archive at least the next 5 years. This paper presents the current status of the project. It underlines the type of products and their limitation. It recaps the validation of these products. It shows the consistency of data collected from ATSR-2 on board ERS-2 with the one of AATSR on board ENVISAT. It provides a first analysis of a significant time series of 10 years of data and makes the first attempt to link these global and regional trends with climate variables such as precipitation and temperature.
Finally the paper presents upcoming efforts to inter-compare and harmonise ATSR World Fire Atlas with other observations of active fire from satellites and a non-exhaustive synopsis of ATSR World Fire Atlas uses in the world.
Keywords: global, fire, climate, atmospheric emissions