File:City Lights 2012 - Flat map.jpg

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DescriptionCity Lights 2012 - Flat map.jpg	English: Composite view of Earth at night from the Suomi NPP satellite in polar orbit 512 miles above the surface, from April 18, over nine days and for 13 days ending October 23, 2012.
Date	6 December 2012
Source	http://www.nasa.gov/mission_pages/NPP/news/earth-at-night.html
Author	NASA Earth Observatory
Other versions	File:City Lights of the United States 2012.jpg

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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current	00:23, 7 December 2012		12,150 × 6,075 (2.64 MB)	Apteva (talk \| contribs)	User created page with UploadWizard

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File:City Lights 2012 - Flat map (20386046478).jpg (file redirect)
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Image title	NASA image acquired April 18 - October 23, 2012This 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. It took 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface and islands.The nighttime view of Earth in visible light was made possible by the“day-night band” of the Visible Infrared Imaging Radiometer Suite. VIIRS detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as gas flares, auroras, wildfires, city lights, and reflected moonlight. In this case, auroras, fires, and other stray light have been removed to emphasize the city lights.Named for satellite meteorology pioneer Verner Suomi, NPP flies over any given point on Earth’s surface twice each day at roughly 1:30 a.m. and 1:30 p.m. The spacecraft flies 824 kilometers (512 miles) above the surface in a polar orbit, circling the planet about 14 times a day. Suomi NPP sends its data once per orbit to a ground station in Svalbard, Norway, and continuously to local direct broadcast users distributed around the world. The mission is managed by NASA with operational support from NOAA and its Joint Polar Satellite System, which manages the satellite's ground system.NASA Earth Observatory image by Robert Simmon, using Suomi NPP VIIRS data provided courtesy of Chris Elvidge (NOAA National Geophysical Data Center). Suomi NPP is the result of a partnership between NASA, NOAA, and the Department of Defense. Caption by Mike Carlowicz.Instrument: Suomi NPP - VIIRSCredit:<b><a href="http://www.earthobservatory.nasa.gov/" rel="nofollow">NASA Earth Observatory</a></b><b>Click here to view all of the <a href="http://earthobservatory.nasa.gov/Features/NightLights/" rel="nofollow"> Earth at Night 2012 images </a></b><b>Click here to <a href="http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=79765 " rel="nofollow"> read more </a> about this image </b> <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html"rel="nofollow">NASA image use policy.</a></b><b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b>enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.<b>Follow us on<a href="http://twitter.com/NASA_GoddardPix" rel="nofollow">Twitter</a></b><b>Like us on<a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b><b>Find us on<a href="http://instagram.com/nasagoddard?vm=grid" rel="nofollow">Instagram</a></b>
Short title	City Lights 2012 - Flat map
Width	54,000 px
Height	27,000 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS5 Macintosh
File change date and time	13:02, 5 December 2012
Exif version	2.21
Color space	sRGB
Date and time of digitizing	14:58, 29 July 2005
Date metadata was last modified	08:02, 5 December 2012
Urgency	1
Unique ID of original document	xmp.did:048011740720681188C6CC0A07FF2C97
IIM version	4

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