LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey 20210601 LF 2019L raster digital data Sioux Falls, SD Earth Resources Observation and Science Center (EROS), U.S. Geological Survey https://www.landfire.gov LANDFIRE's (LF) 2019L 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 Existing Vegetation Type (EVT) and Existing Vegetation Height (EVH) demonstrate some influence on CBH, with Existing Vegetation Cover (EVC) affecting CBH values within certain EVTs. To model this relationship Canopy Cover (CC) and Canopy Height (CH) are used as predictors of CBH; developing a linear regression equation per EVT and disturbance type/severity. 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. 2019L Annual Disturbance products are incorporated into CBH 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. 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. 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 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= 10 meters and some stands dominated by broadleaf species. 2019 ground condition Complete Biennially -127.9878 -65.2544 51.6497 22.7654 ISO 19115 Topic Category imageryBaseMapsEarthCover biota USGS Thesaurus fires hazard preparedness remote sensing image collections geospatial datasets geographic information systems None raster digital data Canopy Base Height CBH U.S. Geological Survey (USGS) U.S. Forest Service (USFS) 2019 Limited Update 2019L Common geographic areas US CONUS United States Continental U.S. Conterminous US None None LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey Customer Service Representative physical

47914 252nd Street

Sioux Falls SD 57198 U.S. 605-594-6151 helpdesk@landfire.gov 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. None in place Unclassified If there is ever doubt, contact the LF Help Desk at helpdesk@landfire.gov Microsoft Windows 10; ESRI ArcCatalog 10.6.1 Products were tested to ensure that each attribute is represented consistently across all data sets. Attributes were not validated against in person observations. The products were pixel "truth" tested for consistency of land or water characteristics across all products. 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. 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. 20210601 Raster Grid Cell 20729 24853 Albers Conical Equal Area 29.5 45.5 -96.0 23.0 0 0 row and column 30 30 meters North American Datum of 1983 (NAD 83) Geodetic Reference System 1980 6378137.000000 298.257222 CBH LF 2019L CBH attributes spreadsheet. LF 2019L VALUE 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. LF 2019L -9999 No Data LF 2019L 0 100 CBH_M_X_10Display attribute, Canopy Base Height is meters *10LF 2019L NoData No Data LF 2019L Non-Forested Value is 0. LF 2019L CBH greater than = 100 Value is 100. LF 2019L LANDFIRE (LF) Remap Forest Canopy Base Height (CBH). 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/. https://www.landfire.gov/cbh.php LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey Customer Service Representative physical

47914 252nd Street

Sioux Falls SD 57198 U.S. 605-594-6151 helpdesk@landfire.gov 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. ARCG 20210601 LF 2019L https://www.landfire.gov none 20210601 LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey Customer Service Representative physical

47914 252nd Street

Sioux Falls SD 57198 U.S. 605-594-6151 helpdesk@landfire.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time None Unclassified None