Terrestrial Condition Assessment (TCA) Uncharacteristic Fire Severity Moderate (Image Service)

Direct Download (Raster Data Gateway) Objective: The TCA Uncharacteristic Disturbance Indicator identifies locations that have had recent catastrophic disturbance including uncharacteristically severe wildfires resulting in needs for reforestation, revegetation or other restoration work. Potential exists to include other major disturbances (e.g., landslides). Data: The LANDFIRE Biophysical Settings (BpS) raster datasets (LF16_BPS_200) were combined with the Monitoring Trends in Burn Severity (MTBS) data (1984-most recent) and Composite Burn Index (Parks et al. 2018) data for the year prior to the assessment year derived from NIFC Fire Perimeters (1000 ac West, 500 ac East) to identify areas that have experienced unnaturally severe wildfires in the recent past, since 1984. The CBI data serves as a bridge until MTBS data are available. The “Moderate severity” metric (layer) represents areas mapped with a dominant condition of mixed severity fire (based on BpS) but had a high severity MTBS fire in that location. Data Format: Raster data are binary: (1) “unnaturally severe fire” or (0) other Spatial Resolution: 30m Source data: MTBS fire severity, expected fire severity , CBI methods, National Interagency Fire Center Perimeters (for CBI) Additional Resources: Details on Method Changes and Source Data Versions Overview of the Terrestrial Condition Assessment: TCA Hubsite or Landfire Office Hour Presentation Explore the results of the most recent assessment: TCA Interactive Data Viewer Learn more about the TCA KPI: TCA Dashboard直接下载（栅格数据网关） 目标：TCA非典型扰动指示器（TCA Uncharacteristic Disturbance Indicator）用于识别近期发生过灾难性扰动的区域，包括需要开展再造林、植被恢复或其他修复工作的非典型重度野火区域，未来还可纳入其他重大扰动类型（如山体滑坡）。 数据：LANDFIRE生物物理设置（LANDFIRE Biophysical Settings, BpS）栅格数据集（LF16_BPS_200）与火灾严重度监测趋势（Monitoring Trends in Burn Severity, MTBS）数据（1984年至今最新数据）、以及由美国国家跨部门消防中心（National Interagency Fire Center, NIFC）火边界数据（西部1000英亩、东部500英亩）提取的评估前一年的综合燃烧指数（Composite Burn Index, Parks等2018）数据相结合，以识别1984年以来近期发生过非自然重度野火的区域。CBI数据作为过渡方案，直至MTBS数据可覆盖全部需求。其中“中度严重度”指标（图层）代表以混合严重度火灾为优势条件（基于BpS）但该位置发生过高严重度MTBS火灾的区域。 数据格式：栅格数据为二值格式，1表示“非自然重度野火”，0表示其他类别。 空间分辨率：30米。 源数据：MTBS火灾严重度数据、预期火灾严重度数据、CBI分析方法、美国国家跨部门消防中心火边界数据（用于CBI计算）。 附加资源：方法变更与源数据版本详情、陆地状况评估（Terrestrial Condition Assessment, TCA）概览：TCA枢纽站点或Landfire办公时间演示文稿；可探索最新评估结果：TCA交互式数据查看器；可了解更多TCA关键绩效指标（Key Performance Indicator, KPI）相关信息：TCA仪表盘。