Limitations and utilisation of Monitoring Trends in Burn Severity products for assessing wildfire severity in the USA
Crystal A. Kolden A B , Alistair M. S. Smith A and John T. Abatzoglou A
+ Author Affiliations
- Author Affiliations
A University of Idaho, 875 Perimeter Drive, MS3021, Moscow, ID 83844-3021, USA.
B Corresponding author. Email: ckolden@uidaho.edu
International Journal of Wildland Fire 24(7) 1023-1028 https://doi.org/10.1071/WF15082
Submitted: 9 April 2015 Accepted: 28 July 2015 Published: 14 September 2015
Abstract
The Monitoring Trends in Burn Severity project is a comprehensive fire atlas for the United States that includes perimeters and severity data for all fires greater than a particular size (~400 ha in the western US, and ~200 ha in the eastern US). Although the database was derived for management purposes, the scientific community has expressed interest in its research capacity. As with any derived data, it is critical to understand inherent limitations to maximise the utility of the dataset without compromising the inferences. The classified severity product in particular is of limited use to research due to a lack of both consistency in developing class thresholds and empirical relationships with ecological metrics. Here we review the products available and their development process, and characterise and quantify the limitations of the classified burn severity data product based on the use of highly variable and subjective classification thresholds. We suggest a framework for overcoming these limitations by developing a more robust classified product that will support ecological management and applications. This framework utilises field data to develop consistent, ecologically based thresholds that incorporate existing ecoregion classifications from LANDFIRE or other fire management frameworks already widely integrated into planning efforts.
Additional keywords: dNBR, Landsat, MTBS, RdNBR.
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