ABSTRACT

We characterize the agreement and disagreement of four publically available burned products (Fire CCI, Copernicus Burnt Area, MODIS MCD45A1, and MODIS MCD64A1) at a finer spatial and temporal scale than previous assessments using a grid of three-dimensional cells defined both in space and in time. Our analysis, conducted using seven years of data (2005–2011), shows that estimates of burned area vary greatly between products in terms of total area burned, the location of burning, and the timing of the burning. We use regional and monthly units for analysis to provide insight into the variation between products that can be lost when considering products yearly and/or globally. Comparison with independent, contemporaneous MODIS active fire observations provides one indication of which products most reasonably capture the burning regime. Our results have implications for the use of global burned area products in fire ecology, management and emissions applications.

摘要

我们使用比在以前的评估中更精细的时空尺度来表征四种公开可用的燃烧产品（Fire CCI，哥白尼燃烧区，MODIS MCD45A1和MODIS MCD64A1）的同意和不同之处，使用的是在空间和空间中定义的三维单元网格及时。我们使用七年的数据（2005-2011年）进行的分析表明，根据总燃烧面积，燃烧位置和燃烧时间的不同，产品之间的燃烧面积估算值之间存在很大差异。我们使用区域和月度单位进行分析，以深入了解在每年和/或全球范围内考虑产品时可能会丢失的产品之间的差异。与独立的，同时进行的MODIS主动火情观察的比较提供了一种指示，表明哪些产品最合理地捕获了燃烧状态。