Start Date: End Date: Published Date Data Date
Aral Sea
560 x 369 JPEG
Published November 24, 2009
The Aral Sea on June 4, 1977, Sept. 17, 1989, and May 27, 2006. Image courtesy of USGS.
Related images:
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Aral Sea Continues to Shrink
720 x 720 JPEG
Published August 27, 2009
In the first half of the twentieth century, it was the world’s fourth-largest lake. By August 2009, virtually nothing remained of the largest lobe.
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Global Biosphere
720 x 360 PNG
Published June 6, 2009
The sum of Earth's plants, on land and in the ocean, changes slightly from year to year as weather patterns shift. This pair of images contrasts average plant growth in 2002 to growth in 2008, revealing small interannual changes.
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Chlorophyll and Currents in the Red Sea
720 x 480 PNG
Published September 13, 2007
his image shows chlorophyll concentrations in the waters of the Red Sea observed by the Sea-viewing Wide Field-of-View Sensor (SeaWiFS) on March 16, 2000. The chlorophyll is present inside single-celled marine plants called phytoplankton, which use the pigment to harvest light for photosynthesis. Places where concentrations of phytoplankton were high are colored yellow. Like the arid terrain surrounding it, the Red Sea is not especially productive. A few patches of blooming plants (yellow swirls) are surrounding by large areas of relatively unproductive waters (blue).
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Dust Crosses the Atlantic
540 x 540 JPEG
Published July 23, 2005
Floridians looking for a break from hurricane season in late July 2005 were in for a change, though it wasn’t necessarily what they wanted: Saharan dust. By July 19, a massive dust storm had crossed the Atlantic towards southern Florida.
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Fernandina Volcano, Galapagos Islands
540 x 334 JPEG
Published May 16, 2005
The most active volcano in the Galapagos Islands began a fresh eruption on May 13, 2005. The eruption sent ash 7 kilometers into the atmosphere.
3000 x 1200 1 MB Bytes - JPEG
Smoke Over Great Australian Bight
540 x 405 JPEG
Published December 22, 2004
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Arctic Blast Chills Eastern United States
Published December 21, 2004
2711 x 4246 5 MB - JPEG
Particle Pollution in Eastern China
Published December 16, 2004
2711 x 3433 2 MB - JPEG