Validation of the Two Standard MODIS Satellite Burned-Area Products and an Empirically-Derived Merged Product in South Africa

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 stu...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2014-02, Vol.6 (2), p.1275-1293
Main Authors: Tsela, Philemon, Wessels, Konrad, Botai, Joel, Archibald, Sally, Swanepoel, Derick, Steenkamp, Karen, Frost, Philip
Format: Article
Language:English
Subjects:
biome
burned area
Combustion
Empirical analysis
Fires
Landsat
Landsat TM
MODIS
MODIS product
Monitoring
Pixels
Remote sensing
Time series
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Summary: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% 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 the MCD45A1 and MCD64A1 products in each site. These findings have significant implications for fire monitoring in southern Africa and contribute toward the understanding of the range and of the sources of errors present in the MODIS burned area products.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs6021275