Probabilistic Wildfire Risk Flame Length Probability 1 Hawaii (Image Service)

National data on burn probability (BP) and conditional flame-length probability (FLP) were generated for the conterminous United States (CONUS), Alaska, and Hawaii using a geospatial Fire Simulation (FSim) system developed by the USDA Forest Service Missoula Fire Sciences Laboratory. The FSim system includes modules for weather generation, wildfire occurrence, fire growth, and fire suppression. FSim is designed to simulate the occurrence and growth of wildfires under tens of thousands of hypothetical contemporary fire seasons in order to estimate the probability of a given area (i.e., pixel) burning under current landscape conditions and fire management practices. The data presented here represent modeled BP and FLPs for the United States (US) at a 270-meter grid spatial resolution. Flame-length probability is estimated for six standard Fire Intensity Levels. The six FLPs correspond to flame-length classes as follows: FLP1 = < 2 feet (ft); FLP2 = 2 < 4 ft.; FLP3 = 4 < 6 ft.; FLP4 = 6 < 8 ft.; FLP5 = 8 < 12 ft.; FLP6 = 12+ ft. Because they indicate conditional probabilities (i.e., representing the likelihood of burning at a certain intensity level, given that a fire occurs), the FLP data must be used in conjunction with the BP data for risk assessment.This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.

美国全国范围内的火灾概率（BP）及条件火焰长度概率（FLP）数据，针对美国本土、阿拉斯加和夏威夷地区，通过美国农业部森林服务局密苏拉森林科学实验室开发的地理空间火灾模拟（FSim）系统生成。FSim系统集成了天气生成、野火发生、火势蔓延及火灾扑救等功能模块。FSim系统旨在模拟数万种假设的现代火灾季节，以估算特定区域（即像素）在当前景观条件和火灾管理措施下燃烧的概率。本数据集展示了美国在270米网格空间分辨率下的模拟火灾概率和火焰长度概率。火焰长度概率根据六个标准火强度等级进行估算。六个FLP分别对应火焰长度等级，具体如下：FLP1 = < 2英尺（ft）；FLP2 = 2 < 4 ft；FLP3 = 4 < 6 ft；FLP4 = 6 < 8 ft；FLP5 = 8 < 12 ft；FLP6 = 12+ ft。由于FLP数据表示的是条件概率（即给定火灾发生的情况下，燃烧特定强度的可能性），因此在使用风险评估时，必须将FLP数据与BP数据结合使用。本记录摘自美国农业部企业数据目录，该目录输入至https://data.gov目录。本记录的数据包括以下资源：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS GeoService。欲获取完整信息，请访问https://data.gov。