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Fire Return Interval Departure (Frid) - Mean Condition Class

This metric, uses the mean percent FRID to a measure of the extent to which contemporary fires (i.e., since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euro-American settlement, with the mean reference FRI binned into another basis for comparison. Mean PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference mean FRI in percent.

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الإصدار Version 5.0
آخر تحديث ٦ مايو ٢٠٢٥، ٢٣:١٦ (UTC+٠٠:٠٠)
أنشئت ٣ مارس ٢٠٢٥، ٠٠:٢٥ (UTC+٠٠:٠٠)
categorical_values {"2": 36757772, "3": 104220006, "1": 35245045, "-1": 13152714, "-2": 10583003, "-3": 2484161}
category /Fire Dynamics/Functional Fire/Fire Return Interval Departure (FRID)
collection_name California Landscape Metrics
creation_method This is a condition class categorization of the data in the Mean PFRID field. MeanCC_FRI categorizes the percent differences calculated in Mean PFRID using the following scale: * 1: 0 to 33.3% departure * 2: 33 to 66.7% departure * 3: >66.7% departure Negative condition classes (i.e., where fires are burning more often than under pre-Anglo-American settlement conditions) are categorized on the negative of the same scale: * -1: 0 to -33.3% * -2: -33 to -66.7% * -3: <-66.7% CC1 and CC-1 are mapped in the same class because they are both within 33% of the mean pre-settlement value.
data_units Integer, 3 to 3
data_vintage 2022. Includes disturbances through the end of 2022.
date_updated August 2024
element Functional Fire
file_name FRID_ConditionClass_2022_202401_T1_v5
format GeoTiff
maximum_value 3.0
metric_definition_and_relevance This metric, uses the mean percent FRID to a measure of the extent to which contemporary fires (i.e., since 1908) are burning at frequencies similar to the frequencies that occurred prior to Euro-American settlement, with the mean reference FRI binned into another basis for comparison. Mean PFRID is a metric of fire return interval departure (FRID), and measures the departure of current FRI from reference mean FRI in percent.
minimum_value -3.0
pillar Fire Dynamics
spatial {"type": "Polygon", "coordinates": [[[-124.5090833859125, 32.4242698701859], [-113.49380570277376, 32.4242698701859], [-113.49380570277376, 42.1119747450123], [-124.5090833859125, 42.1119747450123], [-124.5090833859125, 32.4242698701859]]]}
sub_element Fire Return Interval Departure (FRID)
tier 1