Potential of nasa s modis terra and aqua images in fire incident management and forecast
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Potential of NASA’s MODIS Terra and Aqua images in fire incident management and forecast. Images are available in near- realtime at 250m spatial resolution Current OPERATIONAL fire products (MOD 14) and perimeters are only available at 1 km resolution.

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Potential of nasa s modis terra and aqua images in fire incident management and forecast
Potential of NASA’s MODIS Terra and Aqua imagesin fire incident management and forecast

  • Images are available in near-realtime at 250m spatial resolution

  • Current OPERATIONAL fire products (MOD 14) and perimeters are only available at 1 km resolution


Nasa s modis terra 250m surface reflectance images

10th Largest fire on the record in California since 1933

NASA’s MODIS Terra (250m): Surface Reflectance images

Fire Perimeter

27-Aug. to 9-Sep. 2009

Color code

Green color: Vegetation

Red/brownish red: Burn Scar


Fire perimeter

Fire perimeter

final

5

4

11

Los Angeles County

3

Fire Perimeter

27-Aug. to 9-Sep.

2009

1

2

Source:

MODIS Terra (250m) Surface Reflectance

Source:

MODIS Terra (250m) Surface Reflectance



Major limitations
Major Limitations

Accuracy of fire perimeter derived from surface reflectance (near-realtime, MODIS Terra) is limited by:

  • Clouds

  • Thick Smoke

  • Geolocation accuracy

Advantages of near-real time

Here, the fire perimeter is derived from 250m (spatial resolution) data.

Current active FIRE maps, from USDA Forest Service, is available at 1 km.

MODIS fire product, MODIS MOD14, is also available at only 1 km resolution.

Accuracy of fire spread model (such as FARSITE) can be assessed using temporal evolution of fire perimeter.

MODIS 250m data not only gives better resolution of fire perimeter but also shows major active fire regions.

Near real time availability of fire perimeter and active fire region (pre-noon and after-noon).


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