Difference between revisions of "Namelist.fire"

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(cp from old guide, wikified by Minjeong Kim)
 
 
(15 intermediate revisions by 2 users not shown)
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{{users guide}}
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This file serves to redefine the fuel categories if the user wishes to alter default fuel properties.
 
This file serves to redefine the fuel categories if the user wishes to alter default fuel properties.
  
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! Description
 
! Description
 
|-
 
|-
−
|&fuel_scalars
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|'''&fuel_scalars'''
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| Scalar fuel constants
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| Scalar fuel constants, common to all fuel categories.
 
|-
 
|-
 
|cmbcnst
 
|cmbcnst
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|-
 
|-
 
|fuelmc_g
 
|fuelmc_g
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|Surface fuel, fuel moisture content (in percent expressed in decimal form, from 0.00 – 1.00).
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|Surface fuel, fuel moisture content (kg/kg, between 0.00 and 1.00).
 
|-
 
|-
 
|fuelmc_c
 
|fuelmc_c
−
|Canopy fuel, fuel moisture content (in percent expressed in decimal form, from 0.00 – 1.00).
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|Canopy fuel, fuel moisture content (kg/kg, between 0.00 and 1.00).
 
|-
 
|-
 
|nfuelcats
 
|nfuelcats
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|-
 
|-
 
|no_fuel_cat
 
|no_fuel_cat
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| The number of the dummy fuel category specified to be used where there is ‘no fuel’
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| The first fuel category to be ignored and taken as ‘no fuel’ (default: 14)
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|-
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|no_fuel_cat2
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| 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
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|'''&fuel_categories'''
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| Domain specifications
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| One number per fuel category.
 
|-
 
|-
 
|windrf
 
|windrf
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|-
 
|-
 
|fgi
 
|fgi
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|The initial mass loading of surface fuel (kg m-2) in each fuel category
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|The initial mass loading of surface fuel (kg m<sup>-2</sup>) in each fuel category
 
|-
 
|-
 
|fueldepthm
 
|fueldepthm
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|-
 
|-
 
|savr
 
|savr
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| Fuel Surface-area-to-volume-ratio (m-1)
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| Fuel Surface-area-to-volume-ratio (ft-1)
 
|-
 
|-
 
|fuelmce
 
|fuelmce
−
| Fuel moisture content of extinction (in percent expressed in decimal form, from 0.00 – 1.00).
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| Fuel moisture content of extinction (kg/kg, from 0.00 – 1.00).
 
|-
 
|-
 
|fueldens
 
|fueldens
−
|Fuel particle density lb ft-3 (32 if solid, 19 if rotten)
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|Fuel particle density lb ft<sup>-3</sup> (32 if solid, 19 if rotten)
 
|-
 
|-
 
|st
 
|st
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|-
 
|-
 
|fci_d
 
|fci_d
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|Initial dry mass loading of canopy fuel (in kg m-2)
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|Initial dry mass loading of canopy fuel (in kg m<sup>-2</sup>)
 
|-
 
|-
 
|fct
 
|fct
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|-
 
|-
 
|ichap
 
|ichap
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| Is this a chaparral category to be treated differently using an empirical rate of spread relationship that depends only on windspeed?
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| Is this a chaparral category to be treated differently using an empirical rate of spread relationship that depends only on windspeed
 
|-
 
|-
 
|
 
|
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|Primarily used for Fuel Category 4.
 
|Primarily used for Fuel Category 4.
 
|-
 
|-
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| fmc_gw01
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|      The proportion of the fuel that is in moisture class 1 (between 0.0 and 1.0)
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|-
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| fmc_gw02
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|      The proportion of the fuel that is in moisture class 2, etc. up to 5. The proportions should add up to 1.
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|-
 +
|-
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|'''&moisture'''
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| The [[fuel moisture model]] namelist.
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|-
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| moisture_classes
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|      Number of moisture classes, at most 5. Each fuel consists of a mixture of moisture classes. Following are one number per class.
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|-
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| is_dead
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|      Fuel moisture class is dead or live (1 if is dead and 0 if is live)
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|-
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| drying_model
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|      Number of the drying model used in each class. At the moment only model 1 is supported.  Model parameters follow for each class.
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|-
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| drying_lag
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|      Hours it takes to get 64% closer to a equilibrium moisture contents
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|-
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| wetting_model
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|      Number of the wetting model used in each class. At the moment only model 1 is supported.  Model parameters follow  for each class.
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|-
 +
| wetting_lag
 +
|      Hours of very strong rain it takes to get 64% closer to saturation
 +
|-
 +
| saturation_moisture
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|      The maximal fuel moisture contents (in kg/kg, default 2.5)
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|-
 +
| saturation_rain
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|      Rain intensity (mm/h) such that the rate of soaking is at 64% of wetting_lag
 +
|-
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| rain_treshold
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|      Rain under this intensity (mm/h) does not count
 +
|-
 +
| fmc_gc_initialization
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|      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
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