Image of the day

In the interest of science, and by request, I give you a false color IR image of part of the Alabama coastline, somewhere near 30.30N and 88.60W.

False color IR imagery is made by combining two images recorded in the visible spectrum with one in the infrared. In this typical case, Landsat 7 spectral bands 4, 3, and 2 were combined as red, green and blue respectively. Since vegetation has a high reflectance of the near-IR spectrum, it all appears red in false color IR imagery. More on remote sensing later.

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Landsat ETM+ P/R:021/039, 02-17-2001

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