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my name is Doug Martin I work at the

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Goddard Space Flight Center I use NASA

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satellites to understand how fires burn

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across the globe and how those fires

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released carbon emissions into the

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atmosphere contributes to global warming

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climate and the dryness of the climate

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conditions influences fire weather

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everywhere whether you're in Australia

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or Greece Southern California or across

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the entire North American continent 2012

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was a very dry year that dryness is

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associated with turning forests and

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grasslands into a flammable mixture of

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dead material the long history of

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observations we have from NASA

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satellites about how and where fires

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burn across the globe helps us

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understand what the climate conditions

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are when those fires are burning as

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climate conditions are really important

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as we look towards the future trying to

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understand how fire weather may change

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under projections of future climate

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change most of the climate models

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project an increase in the risk of fire

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activity based purely on how dry the

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conditions will be in the future when we

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look at this we see it in two different

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respects the first is that we expect

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more extreme events events like 2012

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across the western US we have very dry

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conditions that persist for several

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months are associated with lots of fire

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activity if we look for those same kinds

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of dry events in the future we see that

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something that so once a decade event

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under today's climate might be three or

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five years in every decade by the middle

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and end of the century when we look at

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the climate projections we look to see

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what the strength of these changes will

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be under different climate scenarios

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actually the risks of fires and

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particularly the risk of these extreme

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events is much lower under an emission

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scenario that suggests we're making

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strides against reducing our global

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warming greenhouse gas emission if

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instead we look towards a scenario where

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we continue to heavily reliant on fossil

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fuels we see that by the middle of the

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century the frequency of these extreme

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fire weather events is likely to