Climate Feedbacks on Smouldering Earth (talk at EGU Vienna 2011)

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Oral presentation by Dr G Rein at the European Geoscience Union, Annual Meeting, Vienna 2011. Full citation: G Rein, Climate Feedbacks on Smouldering Earth: Enhancement of Moisture deficit and self-heating of fossil and pre-fossil soils, Geophysical Research Abstracts 13, EGU2011-10500, oral presentation, European Geoscience Union, Annual Meeting, Vienna 2011.
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  1 Dr Guillermo ReinUniversity of  Edinburgh Climate Feedbackson Smouldering Earth Moisture deficit and self-heating of organic soils Russian summer, 2010  2 National Geographic 2008 / AP Photo/MODIS 2008 -The Evans Road fire, NCburned for 7 months 1 0  0   k m   During worst drought on record  16,500 ha burned (2x year avg.)  1 m deep into the soil  400 firefighters  Stopped by flooding and excavation  $20 million in suppression costs Feedback Mechanism in Earth System FlamingfiresCarbonEmissionsClimateChange> Soil moisturedeficit > Soiltemperatures evapotranspiration > Ignitionprobability topics I work on  burn area recaptured by forest   3 Feedback Mechanism in Earth System SmoulderingfiresFlamingfiresCarbonEmissionsClimateChange> Soil moisturedeficit > Soiltemperatures evapotranspiration > Ignitionprobability burn depth Self-heatingtendency topics I work on    burn area Permafrost thaw  National Geographic 2008 / AP Photo/MODIS  Flaming fires consume grasslands , shrubs and forests . These take 10-10 2 yearsto grow back and sequester backthe carbon = Renewable & CarbonNeutral Flaming vs. Smouldering  Smouldering fires consume peat ,organic soils and coal . These take 10 4 to 10 8 years to grow again = Not Renewable & Carbon Positive Smouldering fires burnpre-fossil and fossil fuels  4 Smouldering Natural Fuels 10 years 1,000 years 1,000,000 years 300,000,000 years  Most important: duff, humus, peat, coal  Decayed vegetation matter, from shallow(<0.1 m) to deep layers (>30 m).   World Map of Peatlands  Contain more terrestrial carbon than the forests or theatmosphere Gore, 1983
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