LANDFIRE Limited Update Forest Canopy Bulk Density (CBD) CONUS
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator:
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LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
- Publication_Date: 20210601
- Title: LANDFIRE Limited Update Forest Canopy Bulk Density (CBD) CONUS
- Edition: LF 2019L
- Geospatial_Data_Presentation_Form: raster digital data
- Publication_Information:
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- Publication_Place: Sioux Falls, SD
- Publisher:
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Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
- Online_Linkage: https://www.landfire.gov
- Description:
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- Abstract:
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LANDFIRE's (LF) 2019 Limited Update (2019L) Canopy Bulk Density (CBD) describes the mass of available canopy fuel per unit canopy volume that would burn in a crown fire. A spatially explicit map of CBD supplies information used in fire behavior models to determine the spread characteristics of crown fires across the landscape. The CBD mapping process derives field referenced estimates of canopy characteristics through LF Reference Database (LFRDB) plot analysis. Utilizing the LFRDB plots, field referenced CBD values are computed for each plot with the canopy fuel estimation software FuelCalc. In FuelCalc, for tree species that have no crown biomass, an equation for a species with a similar genus is used as a substitute. Species widely considered to be resistant to fire are excluded, for example, Acer and Populus spp. are excluded from the canopy fuel profile because these species are considered relatively inflammable and therefore unavailable. In LF 2019L, fuel products were created with LF 2016 Remap (LF Remap) vegetation in non-disturbed areas, but pre-disturbance vegetation was used in disturbed areas using fuel rule sets. More information about 2019L can be found at https://landfire.gov/lf_limited.php.
LF Remap Annual Disturbance products are incorporated into CBD to provide informed changes by disturbance type, severity, and time since disturbance (TSD). The capable fuels process calculates TSD assignments for disturbed areas using an "effective year". Year 2021 fuels, for example, may be calculated for the year 2021. This process considers all the existing disturbances included in 2019L and assigns fuels to the pre-disturbance vegetation based on the adjusted TSD, making the products "2021 capable fuels." By synchronizing TSDs for surface and canopy fuels, these refinements improve performance of fire behavior modeling. More information about capable fuels can be found at https://www.landfire.gov/lf_remap.php.
- Purpose:
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LF 2019L is the first update to the LF 2016 Remap conterminous United States (CONUS) extent. This update includes a limited set of products that represent circa 2019 ground conditions. Read more about LF 2019L here (https://landfire.gov/lf_limited.php).
LF 2019L 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:
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In LF 2019L, fuel products were created with LF 2016 Remap vegetation in non-disturbed areas, but pre-disturbance vegetation was used in disturbed areas. This product has 2021 capable fuels functionality. Units are (kg/m^3 )*100 . To retrieve the real data value, user must divide the raster values in this data set by 100. The conversion from (kg/m^3 ) to (lb/ft^3 ) is 0.061728 (multiply (kg/m^3 ) by 0.061728). CBD Data Range: 0 - 0.45 (kg/m^3 ) (0 - 45 on the map) 0.45 = thematic class of all values greater than 0.45 meters
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 2019
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: Biennially
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -127.9878
- East_Bounding_Coordinate: -65.2544
- North_Bounding_Coordinate: 51.6497
- South_Bounding_Coordinate: 22.7654
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: imageryBaseMapsEarthCover
- Theme_Keyword: biota
- Theme:
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- 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:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: raster digital data
- Theme_Keyword: Canopy Bulk Density
- Theme_Keyword: CBD
- Theme_Keyword: U.S. Geological Survey (USGS)
- Theme_Keyword: U.S. Forest Service (USFS)
- Theme_Keyword: 2019 Limited Update
- Theme_Keyword: 2019L
- Place:
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- Place_Keyword_Thesaurus: Common geographic areas
- Place_Keyword: US
- Place_Keyword: CONUS
- Place_Keyword: United States
- Place_Keyword: Continental U.S.
- Place_Keyword: Conterminous United States
- Access_Constraints: None
- Use_Constraints: None
- Point_of_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
- Contact_Position: Customer Service Representative
- Contact_Address:
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- 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:
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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:
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- Security_Classification_System: None in place
- Security_Classification: Unclassified
- Security_Handling_Description:
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If there is ever doubt, contact the LF Help Desk at helpdesk@landfire.gov
- Native_Data_Set_Environment: Microsoft Windows 10; ESRI ArcCatalog 10.6.1
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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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:
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The products were pixel "truth" tested for consistency of land or water characteristics across all products.
- Completeness_Report:
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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:
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- Process_Step:
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- Process_Description:
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Beginning in 2019 LF 2019L products were created using recent advances in image compositing, tiling algorithms, and faster computing hardware to ensure that LF products remained relevant. LF 2019L leveraged the Landsat archive, lidar data, and user contributed field plot data compiled into the LF Reference Database (LFRDB), to create new base map 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/core-science-systems/nli/landsat], the National Land Cover Dataset [(NLCD) USGS https://www.mrlc.gov/data], and National Agricultural Statistics Service [(NASS) USDA - https://www.nass.usda.gov/]. To read more about LF reference resources go to https://www.landfire.gov/reference.php. Information about LF 2019L product testing is available by request or via the website at https://www.landfire.gov.
- Process_Date: 20210601
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Grid Cell
- Row_Count: 20729
- Column_Count: 24853
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: Albers Conical Equal Area
- Albers_Conical_Equal_Area:
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- Standard_Parallel: 29.5
- Standard_Parallel: 45.5
- Longitude_of_Central_Meridian: -96.0
- Latitude_of_Projection_Origin: 23.0
- False_Easting: 0
- False_Northing: 0
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
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- Abscissa_Resolution: 30
- Ordinate_Resolution: 30
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983 (NAD 83)
- Ellipsoid_Name: Geodetic Reference System 1980
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257222
- Vertical_Coordinate_System_Definition:
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: CBD
- Entity_Type_Definition: LF 2019L CBD attributes spreadsheet.
- Entity_Type_Definition_Source: LF 2019L
- Attribute:
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- Attribute_Label: VALUE
- Attribute_Definition:
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Forest Canopy Bulk Density (CBD) is the mass of available canopy fuel per unit canopy volume that would burn in a crown fire and values range from 0 to 45.
- Attribute_Definition_Source: LF 2019L
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: -9999
- Enumerated_Domain_Value_Definition: No Data
- Enumerated_Domain_Value_Definition_Source: LF 2019L
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 45
- Attribute:
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- Attribute_Label: CBD_KGM3_X
- Attribute_Definition: CBD is kilograms per meter cubed multiplied by 100.
- Attribute_Definition_Source: LF 2019L
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: NoData
- Enumerated_Domain_Value_Definition: No Data
- Enumerated_Domain_Value_Definition_Source: LF 2019L
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: Non-Forested
- Enumerated_Domain_Value_Definition: Value is 0.
- Enumerated_Domain_Value_Definition_Source: LF 2019L
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: CBD greater than =45
- Enumerated_Domain_Value_Definition: Value is 45.
- Enumerated_Domain_Value_Definition_Source: LF 2019L
- Overview_Description:
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- Entity_and_Attribute_Overview:
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LANDFIRE (LF) Remap Forest Canopy Bulk Density (CBD). An Attribute Table is included with each product download as a .dbf 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/cbd.php
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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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:
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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.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: ARCG
- Format_Version_Date: 20210601
- Format_Specification: LF 2019L
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: https://www.landfire.gov
- Fees: none
- Metadata_Reference_Information:
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- Metadata_Date: 20210601
- 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:
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- Metadata_Security_Classification_System: None
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: None
Generated by mp version 2.9.12 on Thu May 06 07:05:29 2021