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- Back to the WRF-SFIRE user guide.
This file serves to redefine the fuel categories if the user wishes to alter default fuel properties.
| Variable name | Description | ||||
|---|---|---|---|---|---|
| &fuel_scalars | Scalar fuel constants, common to all fuel categories. | ||||
| cmbcnst | The energy released per unit fuel burned for cellulosic fuels (constant, 1.7433e7 J kg-1). | ||||
| hfgl | The threshold heat flux from a surface fire at which point a canopy fire is ignited above (in W m-2). | ||||
| fuelmc_g | Surface fuel, fuel moisture content (in percent expressed in decimal form, from 0.00 – 1.00). | ||||
| fuelmc_c | Canopy fuel, fuel moisture content (in percent expressed in decimal form, from 0.00 – 1.00). | ||||
| nfuelcats | Number of fuel categories defined (default: 13) | ||||
| no_fuel_cat | The number of the dummy fuel category specified to be used where there is ‘no fuel’ | ||||
| &fuel_categories | One number per fuel category. | ||||
| windrf | Wind reduction factor from 20ft to midflame height (1) | ||||
| fgi | The initial mass loading of surface fuel (kg m-2) in each fuel category | ||||
| fueldepthm | Fuel depth (m) | ||||
| savr | Fuel Surface-area-to-volume-ratio (m-1) | ||||
| fuelmce | Fuel moisture content of extinction (in percent expressed in decimal form, from 0.00 – 1.00). | ||||
| fueldens | Fuel particle density lb ft-3 (32 if solid, 19 if rotten) | ||||
| st | Fuel particle total mineral content. (kg minerals/kg wood) | ||||
| se | Fuel particle effective mineral content. (kg minerals – kg silica)/kg wood | ||||
| weight | Weighting parameter that determines the slope of the mass loss curve. This can range from about 5 (fast burnup) to 1000 ( 40% decrease in mass over 10 minutes). | ||||
| fci_d | Initial dry mass loading of canopy fuel (in kg m-2) | ||||
| fct | The burnout time of canopy fuel once ignited (s) | ||||
| ichap | Is this a chaparral category to be treated differently using an empirical rate of spread relationship that depends only on windspeed | ||||
| 1: yes, this is a chaparral category and should be treated differently | |||||
| 0: no, this is not a chaparral category or should not be treated differently. | |||||
| Primarily used for Fuel Category 4. | |||||
| fmc_gw01 | The proportion of the fuel that is in moisture class 1 | ||||
| fmc_gw02 | The proportion of the fuel that is in moisture class 2, etc. up to 5. The proportions should add up to 1. | - | - | &moisture | moisture model namelist |
| moisture_classes | Number of moisture classes, at most 5. Each fuel consists of a mixture of moisture classes. |