Difference between revisions of "Namelist.fire"

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(cp from old guide, wikified by Minjeong Kim)
 
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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.
  

Revision as of 09:00, 18 September 2011

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
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 Domain specifications
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.