USFS 15

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Description

Model Name:

"Old Chamise"

Fuel Model Number:

15

Source:

USFS Custom Model

Reference:

Weise and Regelbrugge, 1997

Description:

This model corresponds to stands where the Potential Natural Vegetation (PNV) was identified from Franklin, 1997 as consisting of:

• > 80% cover of Chamise (Adenostoma fasciculatum) AND greater than 15 years maturity

• dominated by Redshank (Adenostoma sparsifolium) chaparral AND greater than 15 years maturity

Attributes

FuelModelNum

D1H

D10H

D100H

LH

LW

DSAV

LHSAV

LWSAV

FuelBedDepth

MoistOfExtinct

DHC

LHC

IsNFFL

15

4.48

6.73

2.24

1.12

4.48

19.37

66.61

19.37

91.44

13

23260

23260

No

Field Definitions

FuelModelNum

MODEL NUMBER IN COVERAGE - NFFL MODEL NUMBERS ARE STANDARDIZED

-

D1H

ACCUMULATED DEAD 1 HOUR FUELS

Mg/ha

D10H

ACCUMULATED DEAD 10 HOUR FUELS

Mg/ha

D100H

ACCUMULATED DEAD 100 HOUR FUELS

Mg/ha

LH

ACCUMULATED LIVE HERBACEOUS FUELS

Mg/ha

LW

ACCUMULATED LIVE WOODY FUELS

Mg/ha

DSAV

DEAD FUELS "CHARACTERISTIC" SURFACE AREA TO VOLUME RATIO

cm2/cm3

LHSAV

LIVE HERBACEOUS FUELS "CHARACTERISTIC" SURFACE AREA TO VOLUME RATIO

cm2/cm3

LWSAV

LIVE WOODY FUELS "CHARACTERISTIC" SURFACE AREA TO VOLUME RATIO

cm2/cm3

FuelBedDepth

FUEL BED DEPTH (70% of Average Stand Height)

cm

MoistOfExtinct

MOISTURE OF EXTINCTION OF DEAD FUELS

%

DHC

DEAD FUELS HEAT CONTENT

kJ/kg

LHC

LIVE FUELS HEAT CONTENT

kJ/kg

IsNFFL

IS THIS A STANDARD NFFL FUEL MODEL OR CUSTOM MODEL DEVELOPED FROM BEHAVE

-

Fire Spread Predictions

Chaparral Environmental Regimes Used In Fire Spread Predictions

Property

ModerateConditions

ExtremeConditions

Dead 1 Hour Fuel Moisture

0.08

0.02

Dead 10 Hour Fuel Moisture

0.09

0.04

Dead 100 Hour Fuel Moisture

0.11

0.05

Live Herbaceous Fuel Moisture

1.50

0.90

Live Woody Fuel Moisture

1.10

0.70


Source:

Weise and Regelbrugge, 1997

Notes:

Fuel Moisture content values are given on a dry weight basis.

Wind magnitude (speed) was varied from 0 m/s to 10 m/s. Magnitudes in the upper range are meant to mimic Santa Ana conditions.

Slope was varied from 0% to 100%. At 100% slope there is a 1 meter change in vertical elevation for every 1 meter of horizontal distance.

Wind magnitude (speed) in slope trials was set to 0 m/s.


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Last Updated: Marco Morais