Parent Layer: Functional

Name: FRID mean Condition Class 1908 normalized

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Description: 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.----------------This raster has been modified from the base 30m version in the following ways:-------- - It has been aggregated from a 30m to a 300m scale by averaging across the 30m values-------- - The normalized values are rescaled as a one tailed evaluation based on condition classes. When too infrequent fire is a greater near-term concern, -1 = CC(3) (greater than a 67% delinquency), and 1 = CC(1) or lower (less than a 33% delinquency in fire frequency). When too frequent fire is a greater near-term concern, -1 = CC(-3) (greater than a 67% overage), and 1 = greater than CC(-1) (less than a or lower (less than a 33% overage). This interpretation reflects concerns for fire being too infrequent, with delinquency greater than 1/3 of the average fire return interval considered to be more favorable than longer periods of delinquency. We did not create a commensurate reference condition for too frequent fire, but it could be done using the same general premise.----------------- Unit Of Measure: Integer, -3 to 3

Copyright Text: CALFIRE: The State of California and the Department of Forestry and Fire Protection make no representations or warranties regarding the accuracy of data or maps. The user will not seek to hold the State or the Department liable under any circumstances for any damages with respect to any claim by the user or any third party on account of or arising from the use of data or maps. The user will cite the Department of Forestry and Fire Protection as the original source of the data, but will clearly denote cases where the original data have been updated, modified, or in any way altered from the original condition.--------------------------------USDA Forest Service - Region 5 and Pacific Southwest Research Station (PSW): The USDA Forest Service makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the accuracy, reliability, completeness, or utility of these geospatial data, or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps may not be used to determine title, ownership, legal descriptions or boundaries, legal jurisdiction, or restrictions that may be in place on either public or private land. Natural hazards may or may not be depicted on the data and maps, and land users should exercise due caution. The data are dynamic and may change over time. The user is responsible to verify the limitations of the geospatial data and to use the data accordingly.

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