Evaluation of heat focuss and Monte Alegre formula in Chapada dos Guimarães National park

Abstract

The present study aimed to analyze the behavior of the Monte Alegre Formula (MAF) and to quantify the heat focus detected by reference satellites, comparing them with the fires that occurred in Chapada dos Guimarães National Park from 2007 to 2015. Heat analysis was performed using images from AQUA, TERRA and NOAA satellites, whose daily data of detected foci were used to compose the time series over the years, allowing the analysis of trends in the numbers of foci for the park. The data were acquired in the platform of the National Institute of Space Research, in the historical data base of the National Institute of Meteorology and by to the manager of the park. In most years there was an overestimation of the number of heat sources in relation to the number of fire occurrences. The TERRA satellite presented values were closer to the number of fire records in the park. It was observed that 87.69% of the fires were validated in relation to MAF, where 60% belonged to very high hazard class and 27.69% were classified in the high hazard class, demonstrating the effectiveness of MAF in relation to records of fires occurring in the park.