The Black Marble- Earth at Night 2012 -

In daylight our big blue marble is all land, oceans and clouds. But the night – the Black Marble – is electric. Scientists are using new images of Earth’s dark side to better understand human activity and natural events.   Watch the stunning new video…

Above image: Black Marble, Asia and Australia at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. Image credit: NASA, NOAA, and the Department of Defense.

 

This view of Earth at night is a cloud-free view from space as acquired by the Suomi National Polar-orbiting Partnership Satellite (Suomi NPP). A joint program by NASA and NOAA, Suomi NPP captured this nighttime image by the satellite’s Visible Infrared Imaging Radiometer Suite (VIIRS). The day-night band on VIIRS detects light in a range of wavelengths from green to near infrared and uses filtering techniques to observe signals such as city lights, gas flares, and wildfires. This new image is a composite of data acquired over nine days in April and thirteen days in October 2012. It took 312 satellite orbits and 2.5 terabytes of data to get a clear shot of every parcel of land surface.

This video uses the Earth at night view created by NASA’s Earth Observatory with data processed by NOAA’s National Geophysical Data Center and combined with a version of the Earth Observatory’s Blue Marble: Next Generation.

http://earthobservatory.nasa.gov/NightLights

The Black Marble- Earth at Night 2012

This new image of the Earth at night is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite over nine days in April 2012 and thirteen days in October 2012.    Image credit: NASA, NOAA, and the Department of Defense.

The Black Marble- Earth at Night 2012

This image of North and South America at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012.    Image credit: NASA, NOAA, and the Department of Defense.

The Black Marble- Earth at Night 2012

City Lights of the United States 2012.    Image credit: NASA, NOAA, and the Department of Defense.

The Black Marble- Earth at Night 2012

Europe, Africa, and the Middle East at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012.    Image credit: NASA, NOAA, and the Department of Defense.

via universetoday

source earthobservatory

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