![]() ![]() “I’m always amazed at what city light images show us about human activity.” High Resolution Satellite Images “Nighttime light is the most interesting data that I’ve had a chance to work with,” says Chris Elvidge, who leads the Earth Observation Group at NOAA’s National Geophysical Data Center. And this satellite view provides a nice visual where you may happen to live with comparison to the region around you (at least as it appears at night). With regard to prepping and preparedness, population density is one input of many. The United States interstate highway system appears as a lattice connecting the brighter dots of city centers. It’s interesting to see that cities tend to grow along coastlines and transportation networks. For the most part, that’s also related to population and population density. The satellite view of the USA at night reveals urbanized areas. ![]() The data was then mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet. It took 312 orbits to get a clear shot of every parcel of Earth’s land surface and islands. The data was acquired over nine days in April 2012 and 13 days in October 2012. A composite assembled from data acquired by the Suomi NPP satellite. It’s a global view of Earth’s city lights. The Blue Marble – Earth At Night (USA View) I’ve also read the project simply described as Earth At Night. I believe they named the project “The Black Marble”. I first saw this during 2012 when NASA-NOAA released incredible satellite images of earth at night. A fascinating high resolution satellite view of city lights / urban regions of the USA at night. ![]()
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