Editing Heat wave (section)

=== Wildfires ===
A heat wave occurring during a drought can contribute to bushfires and wildfires. This is because a drought dries out vegetation, so it is more likely to catch fire. During the disastrous heat wave that [[2003 European heatwave|struck Europe in 2003]], fires raged through Portugal. They destroyed over {{convert|3010|km2|sqmi}} of forest and {{convert|440|km2|sqmi}} of agricultural land. They caused about €1 billion worth of damage.<ref>{{cite news |last=Bell |first=M. |author2=A. Giannini |author3=E. Grover |author4=M. Hopp |author5=B. Lyon |author6=A. Seth |date=September 2003 |title=Climate Impacts |work=IRI Climate Digest |publisher=[[The Earth Institute]] |url=http://iri.columbia.edu/climate/cid/Sep2003/impacts.html |access-date=28 July 2006}}</ref> High end [[Farmland (farming)|farmland]]s have irrigation systems to back up [[crop]]s.