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Investigation:

LC-02 (Brown / Silveira / Esteves)

LBA Dataset ID:

LC02_FOREST_FLAMMABILITY_ACRE

Originator(s):

1. MENDOZA, E.R.H.
2. BROWN, I.F.
      3. NEPSTAD, D.C.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

Controlled burns were conducted in 1998 in the forest in the Catuaba Experimental Farm of the Federal University of Acre - Rio Branco, Acre, Brazil. The objective was to identify conditions inside a forest that were more likely to propagate forest fires.
Important variables associated with these fires were measured and recorded: type of forest, relative humidity, number of days without rainfall, height of litter, litter humidity, brushwood humidity, amount of water in the ground, canopy openness, leaf area index, and air temperature. We conducted two experiments of controlled fires: one for four minutes duration and one for eight minutes. Flame height and width were estimated. Rate of fire spread was calculated based on the duration of the fire and the measured extent of the burned area.

Beginning Date:

1998-06-01

Ending Date:

1999-09-30

Metadata Last Updated on:

2012-06-08

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO LC-02 Forest Flammability Data, Catuaba Experimental Farm, Acre, Brazil: 1998:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1089

Documentation/Other Supporting Documents:

LBA-ECO LC-02 Forest Flammability Data, Catuaba Experimental Farm, Acre, Brazil: 1998:  http://daac.ornl.gov/LBA/guides/LC02_Forest_Flammability_Acre.html

Citation Information - Other Details:

Mendoza, E.R.H., I.F. Brown, and D.C. Nepstad. 2012. LBA-ECO LC-02 Forest Flammability Data, Catuaba Experimental Farm, Acre, Brazil: 1998. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/ORNLDAAC/1089

Keywords - Theme:

Parameter Topic Term Source Sensor
BIOMASS BURNING BIOSPHERE VEGETATION FIELD INVESTIGATION HUMAN OBSERVER
FIRES BIOSPHERE VEGETATION FIELD INVESTIGATION HUMAN OBSERVER

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Acre Catuaba Experimental Farm -10.07300 -10.07300 -67.62900 -67.62900

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are provided in a single comma-delimited ASCII file: Catuaba_fire_flammability_1998.csv



File contents and organization:

Data description: Forest flammability data collected in 1998 during controlled burns in a forest on the Catuaba Experimental Farm



Column Column Variable description

Number Heading

1 Location Experiment location. All measurements in this file were made in the Catuaba Experiment Farm.

2 Year Study year. All measurements in this file were made in 1998.

3 Exp_class Experiment class. Controlled burn experiment duration: either 4 (minutes) or 8 (minutes)

4 Forest_class Type of Forest. Two classes of forest were used to evaluate the susceptibility of the forest to fire: 1 = open forest and 2 = forest with bamboo (taboca).

5 RH Relative humidity reported as percentage, measured using sensors on the ground

6 Days_wo_rain Number of days without rain

7 Litter_depth Forest floor litter depth reported in centimeters

8 Canopy_openness Canopy openness reported as percentage, measured using a Densiometer

9 Litter_hum Forest floor litter humidity reported in percentage. The litter collection was made between 12:00 to 14:00 hours.

10 Soil_water Amount of water in the soil reported in mm3/m2. The soil collections were done in wells up to 10m deep, to each meter.

11 T_forest Temperature in the forest in degrees centigrade, measured using temperature sensors on the ground.

12 LAI Leaf area index (LAI) measured using the LAI-2000 manufactured by Li-Cor INC.

13 Leaf_angle Average angle of the leaf (MTA) measurements using the LAI-2000 manufactured by Li-Cor Inc.

14 Rain_mm Rain per day reported in millimeters, measured by pluviometers near the place of the experiment

15 Fuelstick_hum Dry brushwood humidity reported as percentage. To determine the dry brushwood humidity, we used small sticks sensitive to the humidity called fuelstick.

16 Burn_area Burned area reported as square meters, determined after the burn test

17 T_open Air temperature in open field away from the forest reported in degrees centigrade, measured by thermometer located near the experiment area.

18 Fire_ht_1 Average height of the fire at one minute in centimeters.

19 Flame_wdth_1 Flame width at one minute in centimeters.

20 Spread_rate Rate of the fire spread in minute/meters

21 Fire_duration Average duration of the fire in minutes



Example data records:

Location,Year,Exp_class,Forest_class,RH,Days_wo_rain,Litter_depth,Canopy_openness,Litter_hum,Soil_water,T_forest,LAI,Leaf_angle,Rain_mm,Fuelstick_hum,Burn_area,T_open,Fire_ht_1,Flame_wdth_1,Spread_rate,Fire_duration

Catuaba Experiment Farm,1998,4,2,64,1,7.2,17,13,1.934,29,5.43,55.5,0,16,0.37,35.5,20,35,3.3,1.06

Catuaba Experiment Farm,1998,4,2,79,2,11.6,15,13,2.068,24,4.96,60.68,2.8,14,0.64,34.85,22.5,23.75,4.37,1.04

Catuaba Experiment Farm,1998,4,1,59,2,15.8,8,10,1.508,34,4.99,44.08,0,13,1.18,35.74,75,16.25,3.52,0.56

Catuaba Experiment Farm,1998,4,2,62,9,5.6,7,30,2.147,24,4.9,47.21,0,16,0.35,29.28,13.33,14,1.23,1.24

Catuaba Experiment Farm,1998,4,2,73,6,5.4,13,21,2.042,22,4.89,60.59,0,14,0.46,33.59,22.5,16.5,1.68,1.14

Catuaba Experiment Farm,1998,4,1,59,9,4.2,14,19,1.346,27,5.46,52.87,0,16,1.99,29.28,110,33.75,5.47,1.25

Catuaba Experiment Farm,1998,4,2,72,4,4,6,13,1.513,29,4.22,41.83,0,15,0.79,36.35,18.33,20,2.29,1.22

Data Application and Derivation:

These data can be used to validate models designed to estimate fire susceptibility using remotely-sensed data.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Not available.

Process Description:

Data Acquisition Materials and Methods:

Not available.

References:

None.

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