Burn Severity (CBI-4), 2018-2020, Sierra Nevada

Oct 8, 2021
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Description:
RAVG Thematic Percent Change in Composite Burn Index (CBI-4). The USDA Forest Service Rapid Assessment of Vegetation Condition after Wildfire (RAVG) program produces geospatial data and maps of post-fire vegetation condition using standardized change detection methods based on Landsat or similar multispectral satellite imagery. RAVG data products characterize vegetation condition within a fire perimeter, and include estimates of percent change in basal area (BA), percent change in canopy cover (CC), and a standardized composite burn index (CBI).


This layer is one of their standard thematic products, 4-class CBI (CBI-4).

Contingent upon the availability of suitable imagery, RAVG products are prepared for all wildland fires reported within the conterminous United States (CONUS) that include at least 1000 acres of forested National Forest System (NFS) land (500 acres for Regions 8 and 9 as of 2016). Data for individual fires are typically made available within 45 days after fire containment ("initial assessments"). Late-season fires, however, may be deferred until the following spring or summer ("extended assessments"). National mosaics of each thematic product are prepared annually. The associated burned area perimeters are available via the Enterprise Data Warehouse (EDW, see https://data.fs.usda.gov/geodata/edw/datasets.php). Assessment type (initial or extended assessment) for each fire is included as an attribute in the perimeter dataset.

https://burnseverity.cr.usgs.gov/products/ravg
https://fsapps.nwcg.gov/ravg/
https://data.fs.usda.gov/geodata/rastergateway/ravg/index.php
Data Provided By:
U.S. Forest Service
Content date:
2018 - 2020
Spatial Resolution:
30 m
Contact Organization:
U.S. Forest Service
Contact Person(s):
Use Constraints:
There are no restrictions on use, except for reasonable and proper acknowledgement of information sources. The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.
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FGDC Standard Metadata XML
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Dataset Type:
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Tags:
wildfire, wildland fire, nbr, normalized burn ratio, dnbr, basal area, relative differenced normalized burn ratio, differenced normalized burn ratio, ravg, burn severity, rnbr, canopy cover, vegetation condition, landsat, biota, composite burn index, cbi
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Conservation Biology Institute

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