Fuel Models

Custom Fuel Model Selection

Four fuel models were built to represent four fuel conditions:
1. Early succesional lodgepole pine where elk sedge is the carrier fuel = TU-LP0
2. Early succesional lodgepole pine where litter is the carrier fuel = TL-LP0
3. Low elevation Douglas-fir with grass-shrub understory = TU-AF
4. Mid-elevation, andesitic mixed conifer = TL-AF

Comparison of the custom fuel models with existing fuel models.

Fuel Model Factors

Metric Units














Number Code 1-hr 10-hr 100-hr Liveherb Livewoody Type 1-hrsav HerbSAV WoodySAV FBD FMExt DeadHeatContent LiveHeatContent Name
171 tu-lp0 0.08 0.26 0.83 0.11 0.02 dynamic 3000 1500 1500 0.12 15 18600 18600 lp0 grass-litter carrier
172 tu-af 0.14 0.01 0.03 0.04 0.02 dynamic 3000 1500 1500 0.06 15 18600 18600 Andesitic forests, grass-litter carrier
193 tl-lp0 0.13 0.38 0.96 0.02 0.03 dynamic 2000 1500 1500 0.11 30 18600 18600 LP0 litter carrier
194 tl-af 0.15 0.01 0.02 0.03 0.05 dynamic 2000 1500 1500 0.09 30 18600 18600 Andesitic forests, litter carrier
















English Units














Number Code 1-hr 10-hr 100-hr Liveherb Livewoody Type 1-hrsav HerbSAV WoodySAV FBD FMExt DeadHeatContent LiveHeatContent Name
171 tu-lp0 0.34 1.16 3.72 0.48 0.08 dynamic 2000 1800 1600 0.4 15 8000 8000 LP0 grass-litter carrier
172 tu-af 0.61 0.03 0.12 0.18 0.07 dynamic 2000 1800 1600 0.2 15 8000 8000 Andesitic forests, grass-litter carrier
193 tl-lp0 0.59 1.69 4.28 0.07 0.13 dynamic 2000 1800 1600 0.35 30 8000 8000 LP0 litter carrier
194 tl-af 0.69 0.03 0.1 0.13 0.24 dynamic 2000 1800 1600 0.31 30 8000 8000 Andesitic forests, litter carrier

Code: Descriptor code
1-hr: One-hour fuel load kg/m2 or tons/acre
10-hr: Ten-hour fuel load kg/m2 or tons/acre
100-hr: Hundred-hour fuel load kg/m2 or tons/acre
LiveHerb: kg/m2 or tons/acre
LiveWoody: kg/m2 or tons/acre
Type: Static or Dynamic
1-hrSAV: One-hour surface area to volume ratio
HerbSAV: Live herbaceous surface area to volume ratio
WoodySAV: Live woody surface area to volume ratio
FBD: Fuel bed depth (m or ft)
FMExt: Fuel moisture of extincion (%)
DeadHeatContent: kJ/kg or Btu/lb
LiveHeatContent: kJ/kg or Btu/lb

Custom Fuel Model Files

BehavePlus Fuel Model Files (*.bpf format)
Save these files in your BehavePlus user file directory, typically C:\Program Files\SEM\BehavePlus3\DefaultDataFolder\FuelModelFolder\MyFuelModels
171-TU-LP0.bpf
172-TU-AF.bpf
193-TL-LP0.bpf
194-TL-AF.bpf

FARSITE and NEXUS Fuel Model Files (*.fmd format)
Save these files in your NEXUS user file directory, typically: C:\Program Files\SEM\NEXUS2\userfiles
171_TU-LP0.fmd 1 model: 171 TU-LP0 Grass carrier, Early post-fire lodgepole pine
172_TU_AF.fmd 1 model: 172 TU-AF Grass carrier, Andesitic Douglas-fir and mixed conifer
193_TL-LP0.fmd 1 model: 193 TL-LP0 Litter carrier, Early post-fire lodgepole pine
194_TL-AF.fmd 1 model: 194 Litter carrier, Andesitic Douglas-fir and mixed conifer
YELL-3.fmd All 4 models