Abstract. During the last 20 years extreme wildfires have challenged firefighting capabilities. Often, the prediction of the extreme behaviour is essential for the safety of citizens and fire fighters. Currently, there are several fire danger indices routinely used by firefighting services, but they are not suited to forecast convective extreme wildfire behaviour at global scale. This article proposes a new fire danger index, extreme fire behaviour index (EFBI), based on the analysis of the vertical profiles of the atmosphere above wildfires as an alternative to the use of traditional fire danger indices. The EFBI evaluates the ease of interaction between wildfires and the atmosphere that could lead to convective, erratic and extreme wildfires. Results of this research in the analysis of some of the critical fires in the last years show that the EFBI can potentially be used to provide valuable information to identify convective fires and to enhance fire danger rating schemes worldwide.

中文翻译：

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极端火灾行为的野火-大气相互作用指数

摘要。在过去的20年中，极端的野火对消防能力提出了挑战。通常，对极端行为的预测对于公民和消防员的安全至关重要。当前，消防部门通常使用几种火灾危险指数，但它们不适合预测全球范围内的对流极端野火行为。本文基于对野火上方大气垂直剖面的分析，提出了一种新的火灾危险指数，即极端火灾行为指数（EFBI），作为使用传统火灾危险指数的替代方法。EFBI评估了野火与大气之间相互作用的难易程度，这可能导致对流，不稳定和极端野火。