识别和定义火灾发生的景观干燥阈值.pdf

1、Identifying&defining landscape dryness thresholds for firesWe acknowledge the Traditional Owners of the lands on which we work,the Dja Dja Wurrung and Wurundjeri peoples.Dr Jane Cawson and Dr Jamie BurtonDr Jane Cawson and Dr Jamie BurtonThe University of MelbourneNatural Hazards Research AustraliaL

2、andscape moisture is the water in the air,soil and vegetationInfluences probability of ignition,fire spread,intensity and size across different spatial and temporal scalesFire managers need landscape moisture information to make informed decisions at various levelsNot just a matter of having access

3、to moisture datasets,but understanding which metrics are most informative,and defining thresholds for levels of fire activityLandscape moisture(or dryness)Many moisture metrics4To determine which moisture metrics are most informative for fire agency decision makingResearch Aim1.Workshop with fire de

4、cision makers 2.Review of existing moisture metrics3.Quantitative evaluation of moisture metrics to inform decision making Project stagesWorkshopACTNSWQLDSATASVICWAOnline,October 202426 participantsAll States and Territories represented,except NTAims:Document key fire management decisions that depen

5、d on moisture informationIdentify what attributes make a moisture metric useful for different types of decisionsFire management decisionsDesirable AttributesSeasonal planningWildfire preparednessWildfire responsePrescribed burningIndicator of hourly fluctuations in fuel availabilityIndicator of dail

6、y fluctuations in fuel availabilityLeading indicator of fuel availability over longer timeframes(months)Applicable across many climatic zones/vegetation types Readily available for use,not reliant on intensive computations or field calibration Provides up-to-date informationPredicts at a moderate to