The Rothermel fire spread model provides the scientific basis for the US National Fire Danger Rating System (NFDRS) and several other important fire management applications. This study proposes a new perspective of the model that partitions the reaction intensity function and Energy Release Component (ERC) equations as an alternative that simplifies calculations while providing more insight into the temporal variability of the energy release component of fire danger. We compare the theoretical maximum reaction intensities and corresponding ERCs across 1978, 1988 and 2016 NFDRS fuel models as they are currently computed and as they would be computed under the proposed scheme. The advantages and disadvantages of the new approach are discussed. More study is required to determine its operational implications.

Rothermel火灾蔓延模型为美国国家火灾危险等级系统（NFDRS）和其他一些重要的火灾管理应用程序提供了科学依据。这项研究提出了一个模型的新视角，该模型划分了反应强度函数和能量释放成分（ERC）方程，作为简化计算的替代方法，同时提供了对火灾危险能量释放成分的时间变化性的更多了解。我们比较了1978年，1988年和2016年NFDRS燃料模型的理论最大反应强度和相应的ERC，这些燃料模型目前正在计算中，并且将根据拟议的方案进行计算。讨论了新方法的优缺点。需要进行更多研究以确定其操作含义。