What are the most red states of the United States? This video identifies and explores the reddest states of the United States. NOTE: Referring to the actual color red - not political!
Keywords: Geography Viz, United States, Redness, Remote Sensing, Landsat 8, Arizona, New Mexico, Utah
Addendum: I was sloppy with the visible color wavelengths. Better approximated ranges are blue 0.45 - 0.5 μm, green 0.5 - 0.6 μm, and red 0.6 - 0.75 μm. Interpretation not affected.
Methodology:
-Used Google Earth Engine to create an image collection
-Landsat 8 Surface Reflectance data (LANDSAT/LC08/C02/T1_L2)
-Five year date filter (get enough data for month and cloud filtering)
-June to August filter (avoid snow cover, leaf-on period)
-Applied cloud mask using the QA_PIXEL band
-Created median image RGB composite from the image collection
-Calculated 'redness' index = Red / (0.5 Green + 0.5 Blue)
-Reduced mean redness for State polygons (scale = 3000 m)
-Polygons included District of Columbia, so ranks ranged 1 to 51
Негізгі бет Ғылым және технология Reddest states of the USA
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