This 3D shading helps to see depth in the terrain. The major enhancement that Outlook Maps makes to the NASA satellite images is combining three dimensional terrain shading. Oceans in the map are shown in a Bathymetry style, which shows the contours of the ocean floor and gives an indication of the relative ocean depths by adjusting the darkness of the blue color. The different environmental regions of the map are also very distinct: deserts, grasslands, farm lands, forests, glaciers, and more. In the image, you'll clearly see details like mountain ranges, lakes, rivers, as well as very large urban areas. The colors of the satellite image are true color, which means they are the actual colors seen from outer space. This scale is excellent for maps of global and continental coverage. The satellite imagery is very high-detailed, with a base resolution of each pixel representing 500 meters. The images were taken at monthly intervals, and this particular map uses October set, which yields fascinating contrast between the snowy northern areas and the lush greens near the tropics. This map is composed from NASA Satellite images acquired as part of the Blue Marble satellite program.
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