Author(s): Ke Shi; Yongsen Yang

Linked Author(s):

Keywords: Wildfire; Hydrometeorology; Wildfire regime; Copul

Abstract: Wildfires are a natural part of the ecosystem in U. S. . It is vital to classify wildfires using a comprehensive approach that simultaneously considers wildfire activity and burned area. On this basis, the influence of hydrometeorological variables on wildfires can be further analyzed. Therefore, this study first classified wildfire types using a wildfire bivariate probability framework. Then, by considering six hydrometeorological variables, the dominant hydrometeorological variables for different wildfire types in 17 ecoregions of the United States were quantified. In addition, based on the results of this hydrometeorology-wildfire relationship analysis, we obtained new clusters that simultaneously considered wildfire characteristics and the impact of hydrometeorology on the wildfires. In particular, the results were as follows: (1) Through the probability of wildfire bivariate statistical characteristics, wildfires could be classified into five types in this paper; (2) The dominant hydrometeorological variables under different wildfire types were discussed in 17 ecoregions of the United States; and (3) In the four new cluster regions, intensifying droughts are a concern in clusters 1 and 4, while there are multiple concerns in cluster 3, namely, stronger winds, higher temperatures, and more drought.

DOI: https://doi.org/10.3850/iahr-hic2483430201-235

Year: 2024