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\section{Introduction}  Reasearch conducted in several regions of the world have demonstrated a link between ENSO and fire activity \cite{Swetnam1983,Simard1985a,Kitzberger2002,Beckage2003,Carmona-Moreno2005,Nicholls2007a,Wooster2012, Harris2013}. The relationship is usually associated with a particular ENSO phase (El Niño or La Niña) and negative rainfall anomalies. These anomalies depend on the regional impact of ENSO over climate and are reflected in the rainfall deficits over the months before —and during– the wildfire season.  \subsection{Study area} 
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