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The following section should be completed after the BARC has been field validated by the BAER team and this entire metadata file should be returned to GTAC with the Soil Burn Severity data.

Fire name: BUSH

 
    BAER Assessment Completion Date:
    BAER Team GIS Analyst:NA
    BAER Team Leader:Andy Casillas
    Soil Burn Severity Analyst(s): Rob Ballard/David Watson
    
    Original BARC256 thresholds:
        Unburned / Undetectable: <=66
        Low: >66 and <=104
        Moderate: >104 and <=171
        High: >171
        
    Soil Burn Severity thresholds:
        Unburned / Undetectable:
        Low:
        Moderate:
        High:
        
    Sequence of steps used to create Soil Burn Severity data:On June 23, 2020, a burned area reflectance classification (BARC) data package was received from the Forest Service Geospatial Technology and Applications Center (GTAC). BARC is an estimation of burn severity based on the change in reflectance of the short-wave infrared and near infrared bands of a satellite image. It is created by comparing the Normalized Burn Ratio (NBR) of a pre-fire image to the NBR of a post-fire image (Miller, Billmire, Elliot, Endsley, & Robichaud, 2015). The images for the Bush Fire from the Sentinel 2B satellite were taken on 6/3/20 and 6/23/20. GTAC classifies the values of the differenced NBR into 4 burn severity classes: Unburned, Low, Moderate, and High. 

Using the BARC as an initial burn severity map and methodology from the Field Guide for Mapping Post-fire Soil Burn Severity, field work was conducted to verify Soil burn severity (SBS) (Parsons, Robichaud, Lewis, Napper, & Clark, 2010). Due to concerns over the spread of Novel COVID-19 only one field day was allocated. Two teams explored the areas of the fire on 6/27/20 consisting of Kelly Mott Lacroix and Mike Martinez driving along forest road 143 and David Watson and Rob Ballard exploring forest roads stemming from US 87 along the western boundary of the Fire. Rapid assessment focused on looking at the spectrum of burn severities within each life zone (e.g. Sonoran Desert, Chaparral, etc.). Despite limited timelines each team was able to get sample points and observations in every life zone represented within the burn perimeter. Table one shows acreage by burn severity for the unadjusted BARC as well as the field verified SBS.

Soil Burn Severity Class	BARC image from 6/23/20, Sentinel 2B	Field Verified Soil Burn Severity
Unburned (ac.)	12,807 – 7%	18,399 – 9%
Low (ac.)	78,030 – 40%	80,417– 41%
Moderate (ac.)	94,385 – 48%	87,300 – 45%
High (ac.)	9,803 – 5%	8,991 - 5%


    
    Additional Comments: