File:Earth's City Lights by DMSP, 1994-1995 (medium).png
Original file (2,560 × 1,280 pixels, file size: 2.56 MB, MIME type: image/png)
Captions
Summary
[edit]DescriptionEarth's City Lights by DMSP, 1994-1995 (medium).png |
English: This image of Earth’s city lights was created with data from the Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS). Originally designed to view clouds by moonlight, the OLS is also used to map the locations of permanent lights on the Earth’s surface.
The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. (Compare western Europe with China and India.) Cities tend to grow along coastlines and transportation networks. Even without the underlying map, the outlines of many continents would still be visible. The United States interstate highway system appears as a lattice connecting the brighter dots of city centers. In Russia, the Trans-Siberian railroad is a thin line stretching from Moscow through the center of Asia to Vladivostok. The Nile River, from the Aswan Dam to the Mediterranean Sea, is another bright thread through an otherwise dark region. Even more than 100 years after the invention of the electric light, some regions remain thinly populated and unlit. Antarctica is entirely dark. The interior jungles of Africa and South America are mostly dark, but lights are beginning to appear there. Deserts in Africa, Arabia, Australia, Mongolia, and the United States are poorly lit as well (except along the coast), along with the boreal forests of Canada and Russia, and the great mountains of the Himalaya. |
Date |
between 1 October 1994 and 31 March 1995 date QS:P,+1994-00-00T00:00:00Z/8,P1319,+1994-10-01T00:00:00Z/11,P1326,+1995-03-31T00:00:00Z/11 |
Source | https://visibleearth.nasa.gov/view.php?id=55167 (image link) |
Author | Data: Marc Imhoff/NASA GSFC, Christopher Elvidge/NOAA NGDC; Image: Craig Mayhew and Robert Simmon/NASA GSFC |
Other versions |
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Licensing
[edit]Public domainPublic domainfalsefalse |
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:
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Public domainPublic domainfalsefalse |
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
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File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:49, 15 April 2017 | 2,560 × 1,280 (2.56 MB) | Huntster (talk | contribs) | Standardise appearance in series. | |
20:45, 9 March 2009 | 2,560 × 1,364 (2.18 MB) | Tryphon (talk | contribs) | Higher resolution. | ||
15:05, 18 September 2007 | 1,499 × 797 (658 KB) | Jonathan Kovaciny~commonswiki (talk | contribs) | Re-cropped version of original NASA image. | ||
15:03, 18 September 2007 | 1,521 × 797 (667 KB) | Jonathan Kovaciny~commonswiki (talk | contribs) | Cropped version of the original NASA image. | ||
16:26, 30 March 2007 | 1,500 × 1,125 (1.61 MB) | Laur2ro (talk | contribs) | {{Information |Description=Earth lights, image is slightly edited (increased contrast and brightness; similar to Image:Whole world - at night.png, but the continents are visible also). |Source=http://visibleearth.nasa.gov/view_rec.php?id=11793 |Date=m |
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- Commons:WikiProject Aviation/recent uploads/2017 April 15
- File:Earth's City Lights by DMSP, 1994-1995 (full).jpg
- File:Earth's City Lights by DMSP, 1994-1995 (large).jpg
- File:Earth's City Lights by DMSP, 1994-1995 (medium).png
- File:Europa-bei-nacht 1-1024x768.jpg
- File:Flat earth night.png (file redirect)
- File:Land shallow topo 2048.jpg
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File change date and time | 18:47, 15 April 2017 |
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Horizontal resolution | 15.11 dpc |
Vertical resolution | 15.11 dpc |