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\begin{document}

\title{Mapping the Wildland-Urban Interface in California: A Novel Approach
based on Linear Intersections}



\author[1,1]{Mukesh Kumar}%
\author[2,2]{Vu Dao}%
\author[2,2]{Phu Nguyen}%
\author[2,2]{Tirtha Banerjee}%
\affil[1]{University of California}%
\affil[2]{University of California,  Irvine}%


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  \date{May 26, 2024}


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\begin{abstract}
The severity and frequency of wildfires have risen dramatically in
recent years, drawing attention to the term `wildland-urban interface'
(WUI), the region where man-made constructions meet flammable
vegetation. Herein, we mapped a finer-scale, novel linear WUI for
California (CA) based on the intersection of boundaries of wildland
vegetation and building footprint. The direct intersection is referred
to as a direct WUI, whereas the intersection at 100-m is known as an
indirect WUI. More fires were ignited closer to direct WUI than indirect
WUI due to their proximity to communities. However, the overlap of past
fire perimeters with indirect WUI is greater than that with direct WUI
which shows that more areas were burned in the indirect WUI due to
embers transported by strong wind gusts during large wildfires. The
study's findings will help land managers and policymakers in controlling
fire dangers, land-use planning, and reducing threats to fire-prone
communities.%
\end{abstract}%



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