Prescribed Burning near SMEAR II spring / early summer 2009  Prescribed burning  Burning plan  Pre-measurements  Measurements during the burning 

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    20-Jan-2016

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  • Prescribed Burning near SMEAR II spring / early summer 2009Prescribed burningBurning planPre-measurementsMeasurements during the burningPost-fire measurements

    Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Prescribed Burning After the clear-cut of spruce dominated forestMerchantable stem wood is harvested and taken awaySlash (needles, branches and crown tops) is left on the siteIn addition to the slash, also the surface vegetation, litter-layer and uppermost part of the humus-layer burnsJanne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Prescribed Burning In Finland there is very seldom such conditions that living tree crowns burn during the forest fire crowns are moist, and there is not enough fire-load in the groundThe amount of burnt biomass is greater in the prescribed burning than in the forest fireJanne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Prescribed Burning Dry conditions needed there must be forest-fire warning in forceWind less than 3-4m secondSoutherly wind to direct burning gases to the SMEAR IISlowly proceeding ignition starting under the wind to both directionsJanne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Janne Levula, SMEAR II, Division of the Atmospheric SciencesWind directionStarting point

  • Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Burning plan See the map11th May to 17th June, 2009 Burning itself takes only one afternoonMore information: http://wiki.helsinki.fi/display/SMEAR/Prescribed+BurningJanne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Pre measurements All the measurements at the SMEAR IIBiomass: trees, surface vegetationMass of the litter-layer and humus-layerGreenhouse-gas fluxes from the soilProperties of the humusSoil moisture and temperatureAerosol signal strength from the similar burning with portable CPCs in the early summer 2008Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Measurements during the burning All the measurements at the SMEAR IIAerosol measurements from the airplane, and possibly also from the ultra-light planeAerosol measurements with movable equipment from the ground levelSurface temperaturesFire intensity ???Janne Levula, SMEAR II, Division of the Atmospheric Sciences

  • Post-fire measurementsAll the measurements at the SMEAR IIMass of the litter-layer and humus-layerGreenhouse-gas fluxes from the soilProperties of the humusSoil moisture and temperatureJanne Levula, SMEAR II, Division of the Atmospheric Sciences

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