Editing IPCC:AR6/WGI/Chapter-12 (section)

==== 12.3.2.8 Fire Weather ====

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Complex fire weather indices shed light on conditions that increase the likelihood of wildfire and shifts in the fire season ( [[#Flannigan--2013|Flannigan et al., 2013]] ; [[#Bedia--2015|Bedia et al., 2015]] ; [[#Jolly--2015|Jolly et al., 2015]] ; [[#Harvey--2016|Harvey, 2016]] ; [[#Littell--2016|Littell et al., 2016]] ; [[#Westerling--2016|Westerling, 2016]] ; [[#Abatzoglou--2019|Abatzoglou et al., 2019]] ), which pose particularly acute challenges for indigenous communities ( [[#Christianson--2019|Christianson and McGee, 2019]] ). Projection of future lightning frequency provides information on an important natural triggering mechanism, particularly when coupled with long-term warming and drying trends ( [[#Romps--2014|Romps et al., 2014]] ; [[#Jin--2015|Jin et al., 2015]] ; [[#Veraverbeke--2017|Veraverbeke et al., 2017]] ). Fuel aridity metrics also help determine vegetative fuel desiccation and therefore the ignitability, flammability and spread of fires when they occur ( [[#Abatzoglou--2016|Abatzoglou and Williams, 2016]] ). The presence of snow cover can influence the length of the fire season and the penetration of fire danger into new portions of the Arctic tundra ( [[#Young--2017|Young et al., 2017]] ; [[#Abatzoglou--2019|Abatzoglou et al., 2019]] ). Data on the changing characteristics of local wind circulations like the Santa Ana in California shed light on future intensity and spread patterns for fires ( [[#Jin--2015|Jin et al., 2015]] ). Fires also produce smoke plumes that reduce air and water quality (via deposition), adversely affecting health, visibility and water resources both near and far downwind ( [[#Dennekamp--2011|Dennekamp and Abramson, 2011]] ; [[#McKenzie--2014|McKenzie et al., 2014]] ; [[#Dreessen--2016|Dreessen et al., 2016]] ; [[#Liu--2016|Liu et al., 2016]] ; [[#Martin--2016|Martin, 2016]] ).

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