LANDFIRE 2020 Forest Canopy Base Height (CBH) AK 2022 Capable Fuels

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Publication_Date: 20220701
Title:
LANDFIRE 2020 Forest Canopy Base Height (CBH) AK 2022 Capable Fuels
Edition: LF 2020
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher:
Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Online_Linkage: https://www.landfire.gov
Description:
Abstract:
LANDFIRE's (LF) 2020 Canopy Base Height (CBH) supplies information used in fire behavior models to determine the critical point at which a surface fire will transition to a crown fire. CBH data are continuous from 0 to 9.9 meters (to the nearest 0.1 meter) and describe the lowest point in a stand where there is enough available fuel (0.25 in dia.) to propagate fire vertically through the canopy. Critical CBH is defined as the lowest point at which the canopy bulk density is .012 kg m-3. The CBH mapping process starts by deriving field referenced estimates of canopy characteristics through LF Reference Database (LFRDB) plot analysis. Utilizing LFRDB plots, a training data set to model CBH was created. Field referenced CBH values are calculated for each plot using the canopy fuel estimation software in Forest Vegetation Simulator (FVS). Statistical analysis of plot variables indicates that LF 2020 Fuel Vegetation Type (FVT) Fuel Vegetation Height (FVH), and Fuel Vegetation Cover demonstrate some influence on CBH. To model this relationship Canopy Cover (CC) and Canopy Height (CH) are used as predictors of CBH; developing a linear regression equation per FVT and disturbance type/severity. In LF 2020, fuel products were created with LF 2020 vegetation in non-disturbed areas. In disturbed areas, pre-disturbance vegetation was used as a starting point to derive disturbed CC and CH from linear regression equations, which was then used to calculate CBH.
CBH was developed using the latest Annual Disturbance products from the effective disturbance years of 2012 to 2020 to provide informed changes by disturbance type, severity, and time since disturbance (TSD). The capable fuels process calculates fuel assignments for disturbed areas using an “effective year”. This process considers all the existing disturbances included in LF 2020 and assigns fuels to the pre-disturbance vegetation based on the adjusted TSD, making the products "2022 capable fuels" intended for use in 2022 and accounting for two years of disturbance recovery. Learn more about LF 2020 at https://landfire.gov/lf_220.php
Purpose:
LANDFIRE 2020 Update (LF 2020) is designed to produce vegetation, disturbance, and fuels products that inform wildland fire and ecological decision systems. LF 2020 is an update to the new base map, LF 2016 Remap (LF Remap), which improved past methodologies and processes to incorporate current satellite imagery, contemporary data sources, and the latest software and hardware technologies. LF 2020 utilizes the most recent and relevant geospatial data available to offer products that reflect current conditions.
LF 2020 products are designed to facilitate national and regional level strategic fire and resource management planning and reporting of management activities. The principal purposes of the products include providing, 1) national level, landscape scale geospatial products to support fire and fuels management planning, and 2) consistent fuels products to support fire planning, analysis, and budgeting to evaluate fire management alternatives.
Products are created at a 30 meter raster; however, the applicability of products varies by location and specific use. LF products were designed to support 1) national (all states) strategic planning, 2) regional (single large states or groups of smaller states), and 3) strategic/tactical planning for large sub regional landscapes and Fire Management Units (FMUs) (such as significant portions of states or multiple federal administrative entities). The applicability of LF products to support fire and land management planning on smaller areas will vary by product, location, and specific use. Managers and planners must evaluate LF products according to the scale and requirements specific to their needs.
Supplemental_Information:
This product has 2022 capable fuels functionality. Units are m * 10. To retrieve the real data value, user must divide the raster values in this data set by 10. The conversion from m to ft is 3.28 (multiply m by 3.28). CBH data range: 0 - 10 meters (0 - 100 raster values m*10). 100 = thematic class of all values greater than or equal to 10 meters and some stands dominated by broadleaf species. Beginning in the LF 2020 update all CONUS products are created with a 90km buffer into both Canada and Mexico, and LF 2020 AK products feature a 90km buffer into Canada. For LF 2020 fuels products the 90km buffer is based on NALCMS and aspect look up.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2020
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.3173
East_Bounding_Coordinate: 175.4184
North_Bounding_Coordinate: 71.5478
South_Bounding_Coordinate: 48.8767
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: farming
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: fires
Theme_Keyword: hazard preparedness
Theme_Keyword: remote sensing
Theme_Keyword: image collections
Theme_Keyword: geospatial datasets
Theme_Keyword: geographic information systems
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: raster digital data
Theme_Keyword: Canopy Base Height
Theme_Keyword: CBH
Theme_Keyword: U.S. Geological Survey (USGS)
Theme_Keyword: U.S. Forest Service (USFS)
Theme_Keyword: LANDFIRE 2020
Theme_Keyword: LF 2020
Place:
Place_Keyword_Thesaurus: Common geographic areas
Place_Keyword: US
Place_Keyword: AK
Place_Keyword: United States
Place_Keyword: Alaska
Place_Keyword: OCONUS
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Contact_Position: Customer Service Representative
Contact_Address:
Address_Type: physical
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198
Country: U.S.
Contact_Voice_Telephone: 605-594-6151
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Data_Set_Credit:
These products were created by the LF team at USGS EROS, Sioux Falls, SD. Refer to the contact information throughout this metadata to contact the LF team.
Security_Information:
Security_Classification_System: None in place
Security_Classification: Unclassified
Security_Handling_Description:
If there is ever doubt, contact the LF Help Desk at helpdesk@landfire.gov
Native_Data_Set_Environment: Microsoft Windows 10; ESRI ArcCatalog 10.7.1
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Products were tested to ensure that each attribute is represented consistently across all data sets. Attributes were not validated against in person observations.
Logical_Consistency_Report:
The products were pixel "truth" tested for consistency of land or water characteristics across all products.
Completeness_Report:
Products were formally tested to ensure that valid data was produced for all pixels. Each product was then validated and tested for duplicates, omissions, and errors.
Lineage:
Process_Step:
Process_Description:
Beginning with the new base map of LF 2016 Remap (LF Remap), products were created using recent advances in image compositing, tiling algorithms, and faster computing hardware to ensure that LF products remained relevant. LF Remap leveraged the Landsat archive, lidar data, and user contributed field plot data compiled into the LF Reference Database (LFRDB), to create new vegetation products. Reference resources included, but were not limited to, Forest Inventory and Analysis (FIA) program plot data (USFS https://fia.fs.fed.us/), Landsat Dynamic Surface Water Extent [(DSWE) USGS https://www.usgs.gov/landsat-missions], the National Land Cover Database [(NLCD) USGS https://www.mrlc.gov/data], and National Agricultural Statistics Service [(NASS) USDA - https://www.nass.usda.gov/].
For LF 2020 reference resources included, but were not limited to, NASS agricultural class layers, NLCD developed and roads classes, TIGER road polylines [https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_apps.html], 3D Elevation Program Digital Elevation Model [(3DEP DEM) USGS https://www.usgs.gov/3d-elevation-program], Monitoring Trends in Burn Severity [(MTBS) USGS https://mtbs.gov/], Burned Area Reflectance Classification [(BARC) USFS and USGS] and Rapid Assessment of Vegetation Condition after Wildfire [(RAVG) https://burnseverity.cr.usgs.gov/ravg/] and North American Land Change Monitoring System [(NALCMS) https://www.mrlc.gov/data/north-american-land-change-monitoring-system] for the 90km buffer area. To read more about LF reference resources go to https://www.landfire.gov/reference.php. Information about LF 2020 product testing is available by request or via the website at https://www.landfire.gov.
Process_Date: 20220701
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 20729
Column_Count: 24853
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55.0
Standard_Parallel: 65.0
Longitude_of_Central_Meridian: -154.0
Latitude_of_Projection_Origin: 50.0
False_Easting: 0.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 30.0
Ordinate_Resolution: 30.0
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North_American_Datum_1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.2572221010042
Vertical_Coordinate_System_Definition:
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: CBH
Entity_Type_Definition: LF 2020 CBH attributes spreadsheet.
Entity_Type_Definition_Source: LF 2020
Attribute:
Attribute_Label: VALUE
Attribute_Definition:
Forest Canopy Base Height (CBH) describes the lowest point in a stand where there is sufficient available fuel to propagate fire vertically through the canopy.
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition: No Data
Enumerated_Domain_Value_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute:
Attribute_Label: MetersX10
Attribute_Definition: Display attribute, Canopy Base Height is meters x 10
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Unrepresentable_Domain: See ADD or attribute table for additional information.
Attribute:
Attribute_Label: Meters
Attribute_Definition: Meters.
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Unrepresentable_Domain: See ADD or attribute table for additional information.
Attribute:
Attribute_Label: R
Attribute_Definition: Red color value/255
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute:
Attribute_Label: G
Attribute_Definition: Green color value/255
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute:
Attribute_Label: B
Attribute_Definition: Blue color value/255
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute:
Attribute_Label: RED
Attribute_Definition: Red color value.
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 1.0
Attribute:
Attribute_Label: GREEN
Attribute_Definition: Green color value.
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 1.0
Attribute:
Attribute_Label: BLUE
Attribute_Definition: Blue color value.
Attribute_Definition_Source: LF 2020
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 1.0
Overview_Description:
Entity_and_Attribute_Overview:
LANDFIRE (LF) 2020 Forest Canopy Base Height (CBH) AK. An Attribute Table is included with each product download as a .csv and embedded in the metadata. The Attribute Data Dictionary (ADD) can be found at https://www.landfire.gov/.
Entity_and_Attribute_Detail_Citation: https://www.landfire.gov/cbh.php
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Contact_Position: Customer Service Representative
Contact_Address:
Address_Type: physical
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198
Country: U.S.
Contact_Voice_Telephone: 605-594-6151
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Distribution_Liability:
This product is reproduced from geospatial information prepared by the U.S. Department of the Interior (DOI) USGS EROS. By removing the contents of this package or taking receipt of these files via electronic file transfer methods, you understand that the data stored on this media can be updated at any time. Represented features may not be in an accurate geographic location. USGS EROS makes no expressed or implied warranty, including warranty of merchantability and fitness, with respect to the character, function, or capabilities of the data or their appropriateness for any user's purposes. USGS EROS reserves the right to correct, update, modify, or replace this geospatial information without notification.
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCG
Format_Version_Date: 20220701
Format_Specification: LF 2020
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://www.landfire.gov
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20220701
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Contact_Position: Customer Service Representative
Contact_Address:
Address_Type: physical
Address: 47914 252nd Street
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198
Country: U.S.
Contact_Voice_Telephone: 605-594-6151
Contact_Electronic_Mail_Address: helpdesk@landfire.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None