Detecting Smoke Plumes and Analyzing Smoke Impacts Using Remote Sensing and GIS for the McNally Fire Incident
نویسندگان
چکیده
Remote sensing and GIS techniques were developed and evaluated to retrospectively analyze the impacts of the McNally Fire on air quality. The McNally Fire was a large wildfire over 54,700 ha (150,000 acres) in size that occurred in the Sequoia National Forest, California, 21 July through 26 August 2002. MODIS satellite images and NOAA pictures were used to digitize smoke plumes. Smoke plumes were analyzed using ESRI ArcGIS Spatial Analyst. Air monitoring data was acquired from 23 locations for PM 10 . Ozone data was acquired from 40 locations. ArcGIS Geostatistical Analyst was used to analyze and produce prediction maps using Kriging as an interpolation method. A strong positive correlation between PM 10 maximums and number of smoke plumes was observed. The correlation between PM 10 averages and number of smoke plumes observed was not as strong. Very high ozone concentrations generated by the the McNally fire were observed northeast of the fire, and affected mainly mountain sites. Ozone impacts due to the fire were not observed at valley sites. Remote sensing and GIS techniques were useful in assisting with the evaluation of fire smoke impacts on air quality.
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