Dataset Identification:
Resource Abstract:
- description: LANDFIRE disturbance data are developed to provide temporal and spatial information related to landscape change
for determining vegetation transitions over time and for making subsequent updates to LANDFIRE vegetation, fuel and other
data. Disturbance data include attributes associated with disturbance year, type, and severity. These data are developed through
use of Landsat satellite imagery, local agency derived disturbance polygons, and other ancillary data. DATA SUMMARY: The disturbance
data are developed through a multistep process. Inputs to this process include; Landsat imagery and derived NBR (normalized
burn ratio) data; polygon data developed by local agencies for the LANDFIRE Refresh effort; fire data obtained from MTBS (Monitoring
Trends in Burn Severity), BARC (Burned Area Reflectance Classification,), and RAVG (Rapid Assessment of Vegetation Condition
after Wildfire) fire mapping efforts; and PAD (Protected Area Database) data.Refresh Event polygon data are provided to LANDFIRE
by various local, regional, and national agencies and organizations. Disturbance type and year information is included as
attributes for each polygon and transferred to the disturbance grids. Severity is determined by using dNBR (difference Normalized
Burn Ratio) data classified into high, medium, and low severity levels based on a statistical comparison with the MTBS, BARC,
and RAVG fire severity. Vegetation Tracker (Huang, et. al. 2008) algorithms are used to identify disturbances outside of Refresh
Events. VCT data are developed for each year identifying disturbed areas as well as severity. Since disturbance type (i.e.
causality) is not determined in the VCT process, a spatial analysis is done comparing the VCT output to buffered (1kilometer)
Refresh Events and PAD GAP Status information (land use characteristics). While not providing a precise type of disturbance,
this analysis provides information useful for narrowing down the types of disturbance that could or could not typically occur.Each
zone has ten disturbance grids, one for each year 1999 to 2008. Each grid is attributed with year, disturbance type (if known,
otherwise a description of possible types), severity, and the data sources used to create the data.; abstract: LANDFIRE disturbance
data are developed to provide temporal and spatial information related to landscape change for determining vegetation transitions
over time and for making subsequent updates to LANDFIRE vegetation, fuel and other data. Disturbance data include attributes
associated with disturbance year, type, and severity. These data are developed through use of Landsat satellite imagery, local
agency derived disturbance polygons, and other ancillary data. DATA SUMMARY: The disturbance data are developed through a
multistep process. Inputs to this process include; Landsat imagery and derived NBR (normalized burn ratio) data; polygon data
developed by local agencies for the LANDFIRE Refresh effort; fire data obtained from MTBS (Monitoring Trends in Burn Severity),
BARC (Burned Area Reflectance Classification,), and RAVG (Rapid Assessment of Vegetation Condition after Wildfire) fire mapping
efforts; and PAD (Protected Area Database) data.Refresh Event polygon data are provided to LANDFIRE by various local, regional,
and national agencies and organizations. Disturbance type and year information is included as attributes for each polygon
and transferred to the disturbance grids. Severity is determined by using dNBR (difference Normalized Burn Ratio) data classified
into high, medium, and low severity levels based on a statistical comparison with the MTBS, BARC, and RAVG fire severity.
Vegetation Tracker (Huang, et. al. 2008) algorithms are used to identify disturbances outside of Refresh Events. VCT data
are developed for each year identifying disturbed areas as well as severity. Since disturbance type (i.e. causality) is not
determined in the VCT process, a spatial analysis is done comparing the VCT output to buffered (1kilometer) Refresh Events
and PAD GAP Status information (land use characteristics). While not providing a precise type of disturbance, this analysis
provides information useful for narrowing down the types of disturbance that could or could not typically occur.Each zone
has ten disturbance grids, one for each year 1999 to 2008. Each grid is attributed with year, disturbance type (if known,
otherwise a description of possible types), severity, and the data sources used to create the data.
Citation
- Title BLM REA COP 2010 LANDFIRE - Disturbance (2004).
-
- creation Date
2018-05-19T22:52:37.396042
Resource language:
Processing environment:
Back to top:
Metadata data stamp:
2018-08-07T00:37:42Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-07T00:37:42Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:556ff42b-1fcf-4db9-8058-aab1c1f492eb
Metadata record format is ISO19139 XML (MD_Metadata)