Namelist.fire: Difference between revisions

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! Description
! Description
|-
|-
|&fuel_scalars
|'''&fuel_scalars'''
| Scalar fuel constants
| Scalar fuel constants, common to all fuel categories.
|-
|-
|cmbcnst
|cmbcnst
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| The number of the dummy fuel category specified to be used where there is ‘no fuel’
| The number of the dummy fuel category specified to be used where there is ‘no fuel’
|-
|-
|&fuel_categories
|-
| Domain specifications
|'''&fuel_categories'''
| One number per fuel category.
|-
|-
|windrf
|windrf
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|-
|-
|ichap
|ichap
| Is this a chaparral category to be treated differently using an empirical rate of spread relationship that depends only on windspeed?
| 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.
|-
|-
| 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.
|
|}
|}


[[Category:WRF-Fire]]
[[Category:WRF-Fire]]

Revision as of 03:53, 27 February 2012

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.