Thursday, June 26, 2008

Remote Sensing-Google Earth Project


I visited the MODIS Active Fire Mapping Program (http://activefiremaps.fs.fed.us/wms.php). MODIS stands for Moderate Resolution Imaging Spectroradiometer. This is the sensor used on the satellite. MODIS is a multi-spectral sensor. The spatial resolution of MODIS is 250 m (band 1-2); 500m (band 3-7) and 1000m (bands 8-36)
( http://modis.gsfc.nasa.gov/about/media/modis_brochure.pdf). These measurements indicate longer wavelengths because they are in meters. MODIS detects over a wide range of the spectrum (multispectral). The referenced brochure details each band .. land/cloud properties bands 3-7; ocean band 8, sky band 17, etc.

This kml displays the United States with symbology representing the fire detections; I zoomed in to the Arizona area to see the geography of the area. The google image displays 1 km MODIS fire detections for the past 12 hours, 12-24 hours and previous 6 days; this was downloaded from Google Earth on Tuesday, June 24th. (NOTE: MODIS completes an image of the earth every 2 days). The Incident Management Team is located north of the Yuba River and all fire incidents occur south of the river.

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