Historical Fire Extent and Severity Mapping (FESM) - Statewide 2013-14

Fire severity is a metric of the loss of biomass caused by fire. In collaboration with the NSW Rural Fire Service, the department's Remote Sensing & Regulatory Mapping team has developed a semi-automated approach to mapping fire extent and severity through a machine learning framework based on satellite imagery. \r\n\r\nThe method uses standardised classes to allow comparison of different fires across the landscape. The FESM severity classes include: unburnt, low severity (burnt understory, unburnt canopy), moderate severity (partial canopy scorch), high severity (complete canopy scorch, partial canopy consumption), extreme (full canopy consumption). \r\n\r\nHere we provide statewide historical severity mapping of fires >100ha for the 2013-14 fire year, which is based on Landsat satellite imagery (30m pixels). From 2016/17 to the current fire year is covered in the statewide FESM data, which is based on Sentinel 2 satellite imagery (10m pixels).火灾烈度（Fire severity）是衡量火灾导致生物量损失的量化评估指标。本部门遥感与合规制图团队与新南威尔士州农村消防局（NSW Rural Fire Service）合作，基于卫星影像构建机器学习框架，开发了一套用于绘制火灾范围与烈度的半自动化方法。 该方法采用标准化分级体系，可实现不同区域火灾间的横向对比。本数据集采用的火灾范围与烈度制图（Fire Extent and Severity Mapping, FESM）烈度分级包括：未过火、低烈度（林下植被被焚烧，冠层未受损伤）、中烈度（冠层部分灼枯）、高烈度（冠层全部灼枯、部分冠层可燃物被消耗）以及极高烈度（冠层完全被燃烧消耗）。 本次提供的数据集包含2013-2014火灾季过火面积大于100公顷的全州历史火灾烈度制图数据，该数据基于陆地卫星（Landsat）影像生成，空间分辨率为30米。2016/2017火灾季至今的全州FESM数据则基于哨兵2号（Sentinel 2）卫星影像制作，空间分辨率为10米。