Four burned area tools were implemented in Google Earth Engine (GEE), to obtain regular processes related to burned area (BA) mapping, using medium spatial resolution sensors (Landsat and Sentinel-2). The four tools are (i) the BA Cartography tool for supervised burned area over the user-selected extent and period, (ii) two tools implementing a BA stratified random sampling to select the scenes and dates for validation, and (iii) the BA Reference Perimeter tool to obtain highly accurate BA maps that focus on validating coarser BA products. Burned Area Mapping Tools (BAMTs) go beyond the previously implemented Burned Area Mapping Software (BAMS) because of GEE parallel processing capabilities and preloaded geospatial datasets. BAMT also allows temporal image composites to be exploited in order to obtain BA maps over a larger extent and longer temporal periods. The tools consist of four scripts executable from the GEE Code Editor. The tools’ performance was discussed in two case studies: in the 2019/2020 fire season in Southeast Australia, where the BA cartography detected more than 50,000 km², using Landsat data with commission and omission errors below 12% when compared to Sentinel-2 imagery; and in the 2018 summer wildfires in Canada, where it was found that around 16,000 km² had burned.

中文翻译：

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Google Earth Engine中基于Landsat和Sentinel-2的燃烧区域映射工具

使用中等空间分辨率传感器（Landsat和Sentinel-2），在Google地球引擎（GEE）中实现了四个燃烧区工具，以获取与燃烧区（BA）映射有关的常规流程。这四个工具是（i）BA制图工具，用于在用户选择的范围和期间对烧伤区域进行监督；（ii）两个工具，用于实施BA分层随机抽样以选择场景和日期进行验证，以及（iii）BA参考周边工具可获取高度准确的BA地图，该地图专注于验证较粗的BA产品。由于具有GEE并行处理功能和预加载的地理空间数据集，因此，烧区映射工具（BAMT）超越了以前实施的烧区映射软件（BAMS）。BAMT还允许使用时间图像合成，以便在更大范围和更长的时间范围内获得BA映射。这些工具包含可从GEE代码编辑器执行的四个脚本。在两个案例研究中讨论了工具的性能：在澳大利亚东南部的2019/2020火灾季节，BA制图仪检测到超过50,000 km²，使用与Sentinel-2图像相比佣金和遗漏误差低于12％的Landsat数据；在加拿大的2018年夏季野火中，大约有16,000 km ²被燃烧。