Difference between revisions of "Namelist.fire"
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|no_fuel_cat | |no_fuel_cat | ||
| − | | | + | | The first fuel category to be ignored and taken as ‘no fuel’ (default: 14) |
| + | |- | ||
| + | |no_fuel_cat2 | ||
| + | | The last fuel category to be ignored and taken as ‘no fuel’ (default: 14). That is, all fuel with categories between no_fuel_cat and no_fuel_cat2 is ignored. Fuel with category 0 is also always ignored. | ||
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| Line 44: | Line 47: | ||
|- | |- | ||
|savr | |savr | ||
| − | | Fuel Surface-area-to-volume-ratio ( | + | | Fuel Surface-area-to-volume-ratio (ft-1) |
|- | |- | ||
|fuelmce | |fuelmce | ||
| Line 91: | Line 94: | ||
| moisture_classes | | moisture_classes | ||
| Number of moisture classes, at most 5. Each fuel consists of a mixture of moisture classes. Following are one number per class. | | Number of moisture classes, at most 5. Each fuel consists of a mixture of moisture classes. Following are one number per class. | ||
| + | |- | ||
| + | | is_dead | ||
| + | | Fuel moisture class is dead or live (1 if is dead and 0 if is live) | ||
|- | |- | ||
| drying_model | | drying_model | ||
| − | | | + | | Number of the drying model used in each class. At the moment only model 1 is supported. Model parameters follow for each class. |
|- | |- | ||
| drying_lag | | drying_lag | ||
| − | | | + | | Hours it takes to get 64% closer to a equilibrium moisture contents |
|- | |- | ||
| wetting_model | | wetting_model | ||
| − | | | + | | Number of the wetting model used in each class. At the moment only model 1 is supported. Model parameters follow for each class. |
|- | |- | ||
| wetting_lag | | wetting_lag | ||
| − | | | + | | Hours of very strong rain it takes to get 64% closer to saturation |
|- | |- | ||
| saturation_moisture | | saturation_moisture | ||
| − | | | + | | The maximal fuel moisture contents (in kg/kg, default 2.5) |
|- | |- | ||
| saturation_rain | | saturation_rain | ||
| − | | | + | | Rain intensity (mm/h) such that the rate of soaking is at 64% of wetting_lag |
|- | |- | ||
| rain_treshold | | rain_treshold | ||
| − | | | + | | Rain under this intensity (mm/h) does not count |
|- | |- | ||
| fmc_gc_initialization | | fmc_gc_initialization | ||
| − | | | + | | Moisture initialization 0 = from WRF input (files '''wrfinput''' or '''wrfrst'''), 1 = from scalar fuelmc_g in namelist.input 2 = from equilibrium |
|} | |} | ||
[[Category:WRF-Fire]] | [[Category:WRF-Fire]] | ||
Latest revision as of 22:30, 24 August 2023
- 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 (kg/kg, between 0.00 and 1.00). |
| fuelmc_c | Canopy fuel, fuel moisture content (kg/kg, between 0.00 and 1.00). |
| nfuelcats | Number of fuel categories defined (default: 13) |
| no_fuel_cat | The first fuel category to be ignored and taken as ‘no fuel’ (default: 14) |
| no_fuel_cat2 | The last fuel category to be ignored and taken as ‘no fuel’ (default: 14). That is, all fuel with categories between no_fuel_cat and no_fuel_cat2 is ignored. Fuel with category 0 is also always ignored. |
| &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 (ft-1) |
| fuelmce | Fuel moisture content of extinction (kg/kg, 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 (between 0.0 and 1.0) |
| 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 | The fuel moisture model namelist. |
| moisture_classes | Number of moisture classes, at most 5. Each fuel consists of a mixture of moisture classes. Following are one number per class. |
| is_dead | Fuel moisture class is dead or live (1 if is dead and 0 if is live) |
| drying_model | Number of the drying model used in each class. At the moment only model 1 is supported. Model parameters follow for each class. |
| drying_lag | Hours it takes to get 64% closer to a equilibrium moisture contents |
| wetting_model | Number of the wetting model used in each class. At the moment only model 1 is supported. Model parameters follow for each class. |
| wetting_lag | Hours of very strong rain it takes to get 64% closer to saturation |
| saturation_moisture | The maximal fuel moisture contents (in kg/kg, default 2.5) |
| saturation_rain | Rain intensity (mm/h) such that the rate of soaking is at 64% of wetting_lag |
| rain_treshold | Rain under this intensity (mm/h) does not count |
| fmc_gc_initialization | Moisture initialization 0 = from WRF input (files wrfinput or wrfrst), 1 = from scalar fuelmc_g in namelist.input 2 = from equilibrium |