Radiative energy release quantification of subsurface coal fires
نویسندگان
چکیده
* Corresponding author. Abstract Monitoring and calculation of coal fire radiative energy (CFRE) are an advanced field of application for satellite imagery. The five thermal infrared bands of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) proved to be suitable for automated fire pixel detection and energy release quantification. Two different automated algorithms were tested on night-time imagery. To improve the robustness of the detection and to reduce influences caused by solar radiation, which may lead to overestimating the energy release, the interest has been focussed on modelling the energy release from a subsurface fire and the fire related impacts on soil and surface temperatures. Discrepancies in CFRE estimations can be detected by comparing the results of satellite data analysis and modelling. This leads to a new validation possibility. A reliable quantification of CFRE is a valuable input for coal fire monitoring and may support green house gas emission estimations. The latter contributes to a coal fire related CDM methodology which is currently under development.
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