Strengths and weaknesses of MODIS hotspots to characterize global fire occurrence

Hantson, Stijn; Padilla, Marc; Corti, D.; Chuvieco, Emilio

doi:10.1016/j.rse.2012.12.004

Cited by 163 publications

(133 citation statements)

References 35 publications

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“…The region is highly susceptible to fire risk, with the highest incidence records for the years 2005 and 2008 [28]. This site was selected as a validation study site for the ESA FIRE_CCI global burned area product [6,20,29].…”

Section: Burned Area Datasetmentioning

confidence: 99%

Can We Go Beyond Burned Area in the Assessment of Global Remote Sensing Products with Fire Patch Metrics?

et al. 2016

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Global burned area (BA) datasets from satellite Earth observations provide information for carbon emission and for Dynamic Global Vegetation Model (DGVM) benchmarking. Fire patch identification from pixel-level information recently emerged as an additional way of providing informative features about fire regimes through the analysis of patch size distribution. We evaluated the ability of global BA products to accurately represent morphological features of fire patches, in the fire-prone Brazilian savannas. We used the pixel-level burned area from LANDSAT images, as well as two global products: MODIS MCD45A1 and the European Space Agency (ESA) fire Climate Change Initiative (FIRE_CCI) product for the 2002-2009 time period. Individual fire patches were compared by linear regressions to test the consistency of global products as a source of burned patch shape information. Despite commission and omission errors respectively reaching 0.74 and 0.81 for ESA FIRE_CCI and 0.64 and 0.62 for MCD45A1 when compared to LANDSAT due to missing small fires, correlations between patch areas showed R 2 > 0.6 for all comparisons, with a slope of 0.99 between ESA FIRE_CCI and MCD45A1 but a lower slope (0.6-0.8) when compared to the LANDSAT data. Shape complexity between global products was less correlated (R 2 = 0.5) with lower values (R 2 = 0.2) between global products and LANDSAT data, due to their coarser resolution. For the morphological features of the ellipse fitted over fire patches, R 2 reached 0.6 for the ellipse's eccentricity and varied from 0.4 to 0.8 for its azimuthal directional angle. We conclude that global BA products underestimate total BA as they miss small fires, but they also underestimate burned patch areas. Patch complexity is the least correlated variable, but ellipse features appear to provide information to be further used for quality product assessment, global pyrogeography or DGVM benchmarking.

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Section: Burned Area Datasetmentioning

confidence: 99%

Can We Go Beyond Burned Area in the Assessment of Global Remote Sensing Products with Fire Patch Metrics?

et al. 2016

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“…However, remote sensing methods have limitations that can cause errors in final burned area products [19]. Major factors include the presence of clouds, which significantly reduces the ability to detect a fire hotspot due to the attenuation of the spectral radiance emitted by the flaming and smoldering phases in the biomass burning process [20], the lack of data on the moment of fire occurrence and, especially, the incompatibility of the spatial resolutions of some sensors, making these sensors unsuitable for the identification of fires [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Assessment of the Spatial and Temporal Distribution of Burned Areas in the Amazon Forest

et al. 2014

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Abstract:The objective of this study was to analyze the spatial and temporal distribution of burned areas in Rondônia State, Brazil during the years 2000 to 2011 and evaluate the burned area maps. A Linear Spectral Mixture Model (LSMM) was applied to MODIS surface reflectance images to originate the burned areas maps, which were validated with TM/Landsat 5 and ETM+/Landsat 7 images and field data acquired in August 2013. The validation presented a correlation ranging from 67% to 96% with an average value of 86%. The lower correlation values are related to the distinct spatial resolutions of the MODIS and TM/ETM+ sensors because small burn scars are not detected in MODIS images and higher spatial correlations are related to the presence of large fires, which are better identified in MODIS, increasing the accuracy of the mapping methodology. In addition, the 12-year burned area maps of Rondônia indicate that fires, as a general pattern, occur in areas that have already been converted to some land use, such as vegetal extraction, large animal livestock areas or diversified permanent crops. Furthermore, during the analyzed period, land use conversion associated with climatic events significantly influenced the occurrence of fire in Rondônia and amplified its impacts.

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“…O sensoriamento remoto orbital possibilita a aquisição de informações em nível global de forma sistemática (ICHOKU et al, 2012), tornando os dados provenientes de sensores orbitais a principal fonte de dados para o estudo das queimadas (ICHOKU et al, 2008;HANTSON et al, 2013).…”

Section: Introductionunclassified

Monitoramento Da Queima Da Cana-De-Açúcar Em Itapemirim (Es) Por Meio De Sensoriamento Remoto

Magalhães¹,

Gualberto²,

Silva³

et al. 2017

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RESUMOO propósito deste estudo foi mensurar as áreas queimadas durante a colheita da cana-de-açúcar no município de Itapemirim no estado do Espírito Santo, para os anos de 2006 a 2011, por meio de imagens do sensor Thematic Mapper do satélite Landsat 5. Utilizou-se 8 cenas do sistema-sensor Landsat 5-TM e realizou-se o mosaico com duas cenas para cada ano. A análise das áreas queimadas foi mensurada a partir do mapeamento dos focos de incêndio, realizados pela composição entre bandas espectrais e fotointerpretação visual, em uma escala fixa de 1:10.000. Quantificou-se os focos de incêndio, a área total queimada e a porcentagem de área queimada em relação à área colhida, para cada ano-safra. Todas as técnicas realizadas neste trabalho foram desenvolvidas nos sofwtares ENVI 5.0 e ArcGIS 10.4. Verificou-se que o percentual de área queimada, nos anossafra em estudo permaneceu abaixo do limite previsto na Lei Estadual nº 9.073/2008. Considerando-se apenas a área queimada, nos anos-safra analisados, ocorreu uma redução da queima da palha da cana. Entretanto, em relação à área total colhida, verifica-se que essa redução não foi expressiva em termos percentuais. As técnicas de sensoriamento remoto mostraram-se eficazes, podendo ser utilizadas para o monitoramento da queima da cana-de-açúcar, que continuava em execução, até o ano-safra de 2011. PALAVRAS-CHAVE: Colheita de cana-de-açúcar, Focos de incêndio, Imagens orbitais MONITORING OF THE SUGAR CANE BURN IN ITAPEMIRIM (ES) BY REMOTE SENSINGABSTRACT The purpose of this study was to measure the areas burned during the sugar cane harvest in the municipality of Itapemirim in the state of Espírito Santo for the years 2006 to 2011, using images from the Thematic Mapper sensor of Landsat 5 satellite. There were 8 scenes of the Landsat 5-TM sensor system and the mosaic was done with two scenes for each year. The analysis of the burned areas was measured by the mapping of the fire sources, performed by the composition between spectral bands and visual photointerpretation, on a fixed scale of 1: 10,000. Fire outbreaks,

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Strengths and weaknesses of MODIS hotspots to characterize global fire occurrence

Cited by 163 publications

References 35 publications

Can We Go Beyond Burned Area in the Assessment of Global Remote Sensing Products with Fire Patch Metrics?

Can We Go Beyond Burned Area in the Assessment of Global Remote Sensing Products with Fire Patch Metrics?

Analysis and Assessment of the Spatial and Temporal Distribution of Burned Areas in the Amazon Forest

Monitoramento Da Queima Da Cana-De-Açúcar Em Itapemirim (Es) Por Meio De Sensoriamento Remoto

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