author = "Libonati, Renata and Camara, Carlos C. da and Setzer, Alberto 
          affiliation = "{Universidade Federal do Rio de Janeiro (UFRJ)} and {Universidade 
                         de Lisboa (UL)} and {Instituto Nacional de Pesquisas Espaciais 
                title = "Spatial and temporal patterns of burned area over Brazilian 
                         Cerrado from 2005 to 2015 using remote sensing data",
            booktitle = "Abstracts...",
                 year = "2016",
         organization = "European Geophysical Society General Assembly",
             abstract = "Although Cerrado is a fire-dependent biome, current agriculture 
                         practices have significantly modified the native fire regime. 
                         Moreover, over the last decades, climate conditions, such as 
                         intensive droughts, have contributed to enhance the effects of 
                         anthropogenic activities, and consequently fire, over the region. 
                         For instance, during the 2010 extreme drought there was an 
                         increase of 100% in the number of fire pixels detected by just one 
                         polar orbiting satellite (information online at 
                         http://www.cptec.inpe.br/queimadas). A better characterization of 
                         spatial and temporal fire patterns over Cerrado is therefore 
                         crucial to uncover both climate and anthropogenic influences in 
                         this ecosystem. Additionally, information about the extent, 
                         location and time of burned areas (BA) over Cerrado is especially 
                         useful to a wide range of users, from government agencies, 
                         research groups and ecologists, to fire managers and NGOs. 
                         Instruments on-board satellites are the only available operational 
                         means to collect BA data at appropriated spatial and temporal 
                         scales and in a cost-effective way. Several global BA products 
                         derived from remote sensed information have been developed over 
                         the last years using a variety of techniques based on different 
                         spatial, spectral and temporal resolutions. Although presenting 
                         similar inter-annual variability, there are marked differences 
                         among the products both in magnitude and location of the area 
                         burnt. The development of regional algorithms which take into 
                         account local characteristics such as vegetation type, soil and 
                         climate is therefore an added value to the existing information. 
                         We present a monthly BA product (AQM) for Brazil based on 
                         information from MODIS 1km. The algorithm was specifically 
                         designed for ecosystems in Brazil and the procedure represents the 
                         first initiative of an automated method for BA monitoring using 
                         remote sensing information in the country. The product relies on 
                         an algorithm that takes advantage of the ability of MIR 
                         reflectances to discriminate BA. Validation over Cerrado biome 
                         indicates that the product is in accordance with BA maps from 
                         reference data, making the product suitable for applications in 
                         fire emission studies and ecosystem management. The AQM regional 
                         database covers the 11-year period 2005-2015 over Cerrado and 
                         allows analyzing the overall temporal and spatial distribution 
                         patterns of BA for the last decade. The highest monthly mean 
                         amount is observed in September, followed by October, and March 
                         presents the lowest amount. The most severe year is 2007, followed 
                         by 2005 and 2010; 2006 and 2009 are the years with less area 
                         burned, followed by 2008. The spatial pattern of BA shows that the 
                         north region of Cerrado presents the highest frequency of 
                         occurrence. The intra and inter-annual variability of BA over 
                         Cerrado are closely related to variability of precipitation but it 
                         is worth emphasizing that, despite the major role played by 
                         climate conditions, the human factor has also a prominent role on 
                         fire dynamics in this region and cannot be disregarded.",
  conference-location = "Vienna, Austria",
      conference-year = "17-22 Apr.",
           targetfile = "libonati_spatial.pdf",
        urlaccessdate = "26 jan. 2021"