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Recent Comparison/Validation Studies of the Wildfire ABBA (WF_ABBA) in North and South America. Joleen M. Feltz * , Michel Moreau ^ , Elaine M. Prins + , Kirsten McClaid-Cook # , Irving Foster Brown ##

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Recent comparison validation studies of the wildfire abba wf abba in north and south america l.jpg

Recent Comparison/Validation Studies of the Wildfire ABBA (WF_ABBA) in North and South America

Joleen M. Feltz*, Michel Moreau^, Elaine M. Prins+,

Kirsten McClaid-Cook#, Irving Foster Brown##

*Cooperative Institute for Meteorological Satellite Studies, University of Wisconsin, Madison, WI

^Environment Canada/Meteorological Services/Quebec Region, Quebec, Canada

+NOAA/NESDIS/ORA Advanced Satellite Products Team

#State University of New York, Albany, New York

##Woods Hole Research Center-WHRC, Federal University of Acre-UFAC,

Federal University Fluminense-UFF


Slide2 l.jpg

Arc of Deforestation (WF_ABBA) in North and South America

8-Year Comparison of 3-Hourly GOES ABBA and

AVHRR INPE Fire Products in South America: 1995 - 2002

In every year the GOES-8 ABBA diurnal fire product identified more fire pixels in the “arc of deforestation” than the single time period NOAA (pm overpass) AVHRR INPE fire product. This study demonstrates the complementary nature of multi-sensor fire detection programs.


Validation comparison studies in western brazil lba activity l.jpg
Validation/Comparison Studies in Western Brazil (WF_ABBA) in North and South AmericaLBA Activity


Slide4 l.jpg


Slide5 l.jpg

Ground Truth Information for Fires in Acre During September/October 2002

Information provided by Kirsten McClaid-Cook

  • Start dates and most start times listed for 88 fires in the Acre region

  • Active fire or fire scar

  • Latitude/Longitude

  • Size in hectares

  • Biomass and weather information


Distribution of biomass type determined by field observation l.jpg
Distribution of Biomass Type Determined by Field Observation September/October 2002

field observations

(88 observations)

WF_ABBA observed

fire pixels (76 observations)


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Comparison of GOES WF_ABBA withGround Truth in Acre, Brazil September/October 2002

GOES WF_ABBA Fire Categories

0 – Processed Fire Pixel 1 – Saturated Fire Pixel 2 – Cloudy Fire Pixel

Possible Categories: 3 – High 4 – Medium 5 – Low


Number of observed fire pixels versus the percentage of region determined to be cloudy at 1745 utc l.jpg
Number of observed fire pixels versus the percentage of region determined to be cloudy at 1745 UTC


Number of observed fire pixels versus the percentage of region determined to be cloudy at 2045 utc l.jpg
Number of observed fire pixels versus the percentage of region determined to be cloudy at 2045 UTC


Quebec canada l.jpg
Quebec, Canada region determined to be cloudy at 2045 UTC


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2002 Quebec region determined to be cloudy at 2045 UTC

Validation

Study

Dates:

20 June

through

31 August

a.

b.


Slide12 l.jpg

2002 region determined to be cloudy at 2045 UTCValidationStudy in Quebec

Quebec

Red markers indicate fires first detected by the WF_ABBA. Filled red circles are fire pixels that were only detected by the WF_ABBA

Courtesy of Michel Moreau

Environment Canada, Meteorological Ser vices, Quebec Region

In one case, the WF_ABBA detected a fire 17 days in advance of the first fire agency report. This fire eventually burned more than 55,000 hectares. This fire was located in Northern Quebec where there is no need for systematic daily detection by SOPFEU


2002 quebec fire season results l.jpg
2002 Quebec Fire Season Results region determined to be cloudy at 2045 UTC

Filtered

96% confirmed

1% possible

3% false

UnFiltered

78% confirmed

2% possible

20% false


Western united states wildfires in june 2002 l.jpg
Western United States: Wildfires in June 2002 region determined to be cloudy at 2045 UTC

1. Smaller fires are more difficult to identify – large view angle.

2. Mountainous topography can hide fire signal

3. Diurnal heating will cause barren desert and rocky landscape to radiate close to the 3.9 micron saturation temperature.


Slide15 l.jpg

Comparison of GOES WF_ABBA with Nature Conservancy region determined to be cloudy at 2045 UTC

Ground Truth in Minnesota

GOES WF_ABBA Fire Categories

0 – Processed Fire Pixel 1 – Saturated Fire Pixel 2 – Cloudy Fire Pixel

Possible Categories: 3 – High 4 – Medium 5 – Low


Conclusions l.jpg
Conclusions region determined to be cloudy at 2045 UTC

  • Initial validation/comparison studies throughout the Western Hemisphere have shown that a consistent geostationary satellite fire monitoring algorithm can be applied in different biomes, under varying view angles and observing conditions.

  • Algorithm is useful for varying user applications: initial detect, mapping of distribution of fires, etc.

  • Temporal filtering significantly reduces false alarms, but also eliminates some short-lived fires.

  • The diurnal information available from the GOES WF_ABBA can complement fire products from higher resolution systems (MODIS).


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