- Tech Transfer
The following additional statements further clarify the nature of the products developed by this project:
- Burn severity is a composite of first-order effects and second order effects that arise within one growing season.
- Burn severity relates principally to visible changes in living and non-living biomass, fire byproducts (scorch, char, ash), and soil exposure.
- Burn severity occurs on a gradient or ordinal scale.
- Burn severity is a mosaic of effects that occur within a fire perimeter.
- Longer term effects are controlled by variables that evolve after a fire and are beyond the scope of this project.
- Burn severity is mappable and remotely sensed data provide a measurement framework.
- Accurate fire location coordinates that can be matched to a burn scar visible on imagery
- Accurate fire size information is necessary to ensure that fires meeting the MTBS size criteria are properly included (e.g. a 50 acre fire reported as 5,000 generally will not be mapped except as noted below. Conversely, a 5,000 acre fire may be missed if it is reported as 50 acres).
- Accurate date of ignition and out date so appropriate dates of imagery can be acquired for mapping, particularly for initial assessments.
- Cloud free observation on both pre-fire and post-fire imagery, as per prescribed assessment strategy, to avoid obscuration of the fire area.
- Fires of very low severity may not be visible in the imagery and thus not possible to delineate or characterize.
|General information from MTBS project website||Webpage Title. (revision date). MTBS Project Homepage. Available online: URL [Access Date].||Monitoring Trends in Burn Severity. (2009, November - last revised). [MTBS Project Homepage, USDA Forest Service/U.S. Geological Survey]. Available online:
http://mtbs.gov/index.html [2009, December 12].
|MTBS geospatial datasets||Webpage Title: Data product. (revision date). Agencies. Available online: URL [Access Date].||MTBS Data Access: Fire Level Geospatial Data. (2009, November - last revised). MTBS Project (USDA Forest Service/U.S. Geological Survey). Available online:
http://mtbs.gov/dataquery/individualfiredata.html [2009, December 12].
|MTBS project reports||Report compiler. Publication date. Report title. Available online: URL.||Schwind, B. (compiler). 2008. Monitoring Trends in Burn Severity: Report on the PNW & PSW Fires—1984 to 2005. Available online: http://mtbs.gov/.|
- Pre-fire Landsat 30m reflectance image subset (GeoTiff)
- Post-fire Landsat 30m reflectance image subset (GeoTiff)
- 30m dNBR image subset (GeoTiff)
- 30m RdNBR image subset (GeoTiff)
- 30m 6-class thematic burn severity (GeoTiff)
- Burned area perimeter (ESRI shapefile)
- Non-processing area mask (ESRI shapefile)
- FGDC metadata (text/XML)
- Page-sized burn post-fire Landsat image and burn severity map with burn severity statistical summary (PDF)
- Google Earth map with pre/post Landsat image, burn scar boundary and thematic burn severity data (KMZ)
- Statistical summary of burn severity by key GIS layers (dbf)
- Fire table containing key fire occurrence attributes (dbf)
|Projection Parameter||CONUS||Alaska||Hawaii||Puerto Rico|
|Projection||Albers Equal Area||Albers Equal Area||Albers Equal Area||Albers Equal Area|
|Spheroid||GRS 1980||WGS 84||WGS 84||GRS 1980|
|Datum||NAD83||WGS 84||WGS 84||NAD83|
|Latitude of 1st standard parallel||29:30:00 N||55:00:00 N||8:00:00 N||8:00:00 N|
|Latitude of 2nd standard parallel||45:30:00 N||65:00:00 N||18:00:00 N||18:00:00 N|
|Longitude of central meridian||96:00:00 W||154:00:00 W||157:00:00 W||66:30:00 W|
|Latitude of origin of projection||23:00:00 N||50:00:00 N||3:00:00 N||3:00:00 N|
|False easting of central meridian||0 meters||0 meters||0 meters||0 meters|
|False northing at origin||0 meters||0 meters||0 meters||0 meters|
1 – Unburned to Low
2 – Low severity
3 – Moderate severity
4 – High severity
5 – Increased greenness
6 – Non-processing area
- MTBS burn area delineations may not include surface burns that are not visible because they occur under unburned vegetation canopies. These areas may or may not be included in incident perimeters depending ground-based information was available.
- MTBS burn area boundaries do not delineate unburned islands within the fire area whereas incident perimeters typically do, at least for larger unburned islands.
- Incident perimeters may be delineated to the extent of fire containment lines. Fires may or may not actually extend to containment lines in some cases resulting in overestimates of fire area.
Selected datasets from the suite of fire-level data are appended together by the MTBS project to create seamless national geospatial datasets. MTBS burn area boundary polygons are appended together as a single nationwide ESRI polygon shapefile with pertinent attributes. Additionally, fire occurrence point locations are calculated for each MTBS fire and compiled into a nationwide ESRI point shapefile. Thematic burn severity data for each individual MTBS fire are also mosaicked to generate annual, seamless burn severity GeoTiff images. All three of these national MTBS datasets can be downloaded from the MTBS National Geospatial Data webpage.
I’m interested in using remote sensing for assessing fire effects and how MTBS utilizes this technology. How can I find out more information?
If you have a question which has not been addressed on the FAQs page, please send us an email.
Your question will be forwarded to the MTBS project and you will receive an answer. If appropriate, your question will be added to the MTBS FAQs web page.
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