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Fire Ignition Probability Lightning Cause
These rasters depict the predicted human- and lightning-caused ignition probability for the state of California. Ignition is regulated by complex interactions among climate,... -
FIA Forest Types
Managers work with forest types for a variety of purposes and knowing the major forest type of a target location helps to assess the best suited treatment for the site. The F3... -
CWHR Vegetation - Type
Vegetation maps are important for characterizing many important features of a landscape such as wildlife habitat, fuels conditions, forest composition, and carbon. Such data are... -
CWHR Vegetation - Size
Vegetation maps are important for characterizing many important features of a landscape such as wildlife habitat, fuels conditions, forest composition, and carbon. Such data are... -
CWHR Vegetation - Density
Vegetation maps are important for characterizing many important features of a landscape such as wildlife habitat, fuels conditions, forest composition, and carbon. Such data are... -
Fire Severity Classification
Fire severity classification (low, moderate, high) that burned within the last 10 years (2012-2021). The difference-adjusted relativized difference normalized burn ratio (RDNBR)... -
Total Fuel (Dead and Down) Load
Stephens et al. (2022) note that total dead/down values over 20 (short) tons/ac (40 Mg/ha) resulted in high severity in 56% of the pixels. Higuera and Abatzoglou (2020) note... -
Structure Exposure Score
Structure Exposure Score is an integrated rating of wildfire hazard that includes the likelihood of a wildfire reaching a given location along with the potential intensity and... -
Standing Dead and Ladder Fuels
This is the material that may burn at the extreme end of the spectrum and contribute to mass fire behavior (Stephens et al., 2022), especially during crown spread type events.... -
Sierra Nevada - Large Tree Density - > 30" Dbh
Large trees are important to forest managers for multiple reasons: they have a greater likelihood of survival from fire; they are an important source of seed stock; they provide... -
Sierra Nevada - Large Tree Density - 24" - 30" Dbh
Large trees are important to forest managers for multiple reasons: they have a greater likelihood of survival from fire; they are an important source of seed stock; they provide... -
Sierra Nevada Biomass Volume
This metric expresses the total amount of existing biomass volume (measured in dry weight tons per acre) from all live tree crowns (branchwood and foliage) and the tree stems... -
Potential Total Smoke Production Index
This metric is an index of the potential smoke production (represented by particulate matter that is 2.5 microns or less in diameter, or PM2.5) that could be emitted for a given... -
Potential Avoided Smoke Production Index
This is an index of how much less smoke (as defined by PM2.5 emissions) would be produced from a given pixel by burning under moderate fire weather conditions rather than the... -
Northern CA Cost of Potential Treatments - Biomass Treatment Cost Low
This metric represents cost of potential treatments for the Northern California region and is dependent on predefined treatments or silvicultural prescriptions, which are best... -
Northern CA Cost of Potential Treatments - Biomass Treatment Cost High
This metric represents cost of potential treatments for the Northern California region and is dependent on predefined treatments or silvicultural prescriptions, which are best... -
Late Seral Stage Distribution
The seral stages are categories that represent the developmental progression of forest ecosystems from initial establishment or following a stand replacing event (e.g., high... -
Large Tree Carbon
Large trees in this metric were calculated as the sum of branch and stemwood plus foliage for trees over 20 inches in diameter. This is intended to represent the most stable... -
Gold-Spotted Borer Presence and Rate of Spread
Tree mortality and other forest damage is detected by annual aerial surveys over forested lands by state and federal agency staff. The primary purpose of the aerial survey is to... -
Giant Sequoia Stands
The population of giant sequoia ( Sequoiadendron giganteum [SEGI]) trees is an irreplaceable heritage to be studied, protected, and preserved as it faces increased threats from...