Journal
REMOTE SENSING
Volume 6, Issue 2, Pages 1275-1293Publisher
MDPI
DOI: 10.3390/rs6021275
Keywords
burned area; Landsat TM; MODIS product; biome
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The 500-m Moderate Resolution Imaging Spectroradiometer (MODIS) burned area products, MCD45A1, MCD64A1, and a merged product were validated across six study sites in South Africa using independently-derived Landsat burned-area reference data during the fire season of 2007. The objectives of this study were to: (i) investigate the likelihood of the improved detection of small burns through an empirically-derived merged product; (ii) quantify the probability of detection by each product using sub-pixel burned area measures; and, (iii) compare the mean percent concurrence of burned pixels between the standard products over a ten-year time series in each site. Results show that MCD45A1 presented higher detection probabilities (i. e., 3.0%-37.9%) for small fractions <= 50%, whereas MCD64A1 appeared more reliable (i.e., 12.0%-89.2%) in detecting large fractions >50% of a burned MODIS pixel, respectively. Overall, the merged product demonstrated improved detection of the burned area in all fractions. This paper also demonstrates that, on average, >50% of MODIS burned pixels temporally concur between
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