2011-07-16 04:16:53Wildfires likely to drive global warming -- The Hindu
John Hartz
John Hartz
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The following article caught my eye and caused me to wonder if climate scientists have heretofore categorized wildfires asa feedback mechanism? Has the concept of wildfires being a feedback mechanism been specifically addressed in a posted SkS article.

In the context of the above, Empirical evidence for positive feedback posted by John cook in Nov 2007 could be updated. 


Wildfires likely to drive global warming, The Hindu, July 11, 2001

Fire, one of nature’s primary carbon cycling mechanisms, will be driving atmospheric changes as the world warms.

“Fires require fuel to burn and climate strongly affects the type, quantity and quality of fuel,” says Melita Keywood of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia.

“Reduced water availability associated with drought may also result in drier biomass that is more readily burned in possibly more intense fires...,” added Keywood, who conducted the study with a team of scientists from the U.S., Greece, Italy, Switzerland and Germany.

“In turn, fires influence climate by the emissions to the atmosphere of aerosols and GHG (greenhouse gases), and by affecting the ability of terrestrial ecosystems to sequester carbon,” said Keywood, reports the journal Critical Reviews in Environmental Science and Technology.

Keywood said there is some evidence that fire activity may already be increasing in Western U.S. forests and recent exceptionally intense fire events — Australian Black Saturday fires in 2009 and Russian fires in 2010 — highlight the devastation resulting from extreme weather, according to a CSIRO statement.

“Wildfires and biomass burning are important for a range of international and domestic policies — from air pollution to climate, poverty, security, food supply, and biodiversity,” said Keywood.

Source: "Wildfires likely to drive global warming," The Hindu, July 11, 2001

http://www.thehindu.com/sci-tech/energy-and-environment/article2218690.ece

2011-07-16 04:56:41
Anne-Marie Blackburn
Anne-Marie Blackburn
bioluminescence@hotmail.co...
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Maybe wildfires deserve their own blog post - I believe there is evidence that changes have already been observed in North America and linked to rising temperatures, dry soils and vegetation and early snow melt. And of course they act as a positive feedback. Certainly worth investigating.

2011-07-16 06:04:06Anne-Marie
Daniel Bailey
Daniel Bailey
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Are you offering to write one?

;-)

2011-07-16 09:28:54
Rob Painting
Rob
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Good on ya Anne-Marie, about time we had a post on wildfires.

2011-07-17 01:28:19
Anne-Marie Blackburn
Anne-Marie Blackburn
bioluminescence@hotmail.co...
80.42.210.162

Better go and find some papers then ;)