LANDFIRE 2016 Remap Forest Canopy Bulk Density (CBD) AK 2020 Capable Fuels
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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: 20210805
- Title:
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LANDFIRE 2016 Remap Forest Canopy Bulk Density (CBD) AK 2020 Capable Fuels
- Edition: LF Remap
- 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) Remap 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.
CBD has a series of post-processing techniques and logic checks ensuring it is relevant in the context of other fuel products and fire behavior predictions. All non-forest values and non-burnable types such as urban, barren, snow and ice, and agriculture are coded as 0. Some stands dominated by broadleaf species which typically do not permit initiation of crown fire (e.g. Populus spp.) are coded with a CBD of 0.01 kg m-3. In some instances, LF Remap assumes the potential burnable biomass in the tree canopy has been accounted for in the surface fuel model. For example, young or short conifer stands where the trees are represented by a shrub type fuel model will not have canopy characteristics.
LF Remap Annual Disturbance products are incorporated into CBD to provide informed changes by disturbance type, severity, and time since disturbance (TSD). Annual Disturbance products provide a pre-disturbance scenario represented by LF Remap existing vegetation products. Reporting of the pre-disturbance scenario helps to calculate CBD, with information about vegetation type, cover, and height impacted by a disturbance. With the use of Annual Disturbance products, CBD also has capable fuels functionality. Capable fuels calculate TSD assignments for disturbed areas using an "effective year." For example, year 2020 fuels may be calculated for the year 2020. This new process considers all the existing disturbances included in LF Remap and adjusts the TSD for these to the effective year (2020 in this example), making the products "2020 capable fuels." More information about capable fuels can be found at https://www.landfire.gov/lf_remap.php.
- Purpose:
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LF 2016 Remap (LF Remap) is a comprehensive mapping effort that uses recent data to create a new base map product suite that better represents contemporary conditions. LF Remap represents circa 2016 ground conditions and is designed to produce vegetation, disturbance, and fuels products that inform wildland fire and ecological decision systems. LF Remap has improved past methodologies and processes to incorporate current satellite imagery, contemporary data sources, and the latest software and hardware technologies. Final LF Remap products offer significant improvements to all previous LF versions (read more about versions here https://www.landfire.gov/lf_schedule.php).
LF Remap 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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LF 2016 Remap AK products were mapped with a 90km buffer into Canada. The datum used was NAD 83 AK Albers. This product has 2020 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 or equal to 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: 2016
- 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: -179.3173
- East_Bounding_Coordinate: 175.4184
- North_Bounding_Coordinate: 71.5478
- South_Bounding_Coordinate: 48.8767
- 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: LF 2016 Remap
- Theme_Keyword: LANDFIRE 2016 Remap
- Place:
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- 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:
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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 2016 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 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 Remap product testing is available by request or via the website at https://www.landfire.gov.
- Process_Date: 20210805
- 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: 66861
- Column_Count: 126115
- Vertical_Count: 1
- 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: 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:
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- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
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- Abscissa_Resolution: 30.0
- Ordinate_Resolution: 30.0
- 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: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257222101
- 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 Remap CBD attributes spreadsheet.
- Entity_Type_Definition_Source: LF Remap
- 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 Remap
- 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 Remap
- 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 Remap
- 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 Remap
- 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 Remap
- Attribute_Domain_Values:
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- Enumerated_Domain:
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- Enumerated_Domain_Value: CBD greater than or equal to 45
- Enumerated_Domain_Value_Definition: Value is 45.
- Enumerated_Domain_Value_Definition_Source: LF Remap
- 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: 20210805
- Format_Specification: LF Remap
- 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: 20210805
- Metadata_Contact:
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- 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