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Phytoplankton Surge in Arctic Waters
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Published July 30, 2020
The floating plant-like organisms are showing up in higher concentrations across the Arctic Ocean.
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Seeing the Sea Through the Years
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Published April 30, 2019
In several decades of observing the ocean with satellites, our vision has changed as much as the sea.
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Mosaic of the Arctic
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Published October 28, 2016
The fragility of our home planet is apparent in this view of the whole Arctic region in September 2012, when sea ice reached its lowest minimum extent ever observed in the satellite record.
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Finding Hidden Shoals on the North Slope
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Published September 17, 2015
By analyzing satellite images of sediments, coastal researchers and cartographers can identify potential shallows, shoals, and shipping hazards.
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Changing Views of Fine Particulate Pollution
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Published June 24, 2015
Improved data from several satellites illustrates how concentrations of fine particulate pollution have changed over time.
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Methane Emissions from the Arctic Ocean
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Published May 9, 2012
Airborne measurements detect the greenhouse gas rising out of cracks in the ice cap.
Thirteen Years of Greening from SeaWiFS
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Published April 5, 2011
The image of SeaWiFS data as a global average over the entire 13-year record shows the greenness of Earth's oceans and land masses.
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Aral Sea
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Published November 24, 2009
The Aral Sea on June 4, 1977, Sept. 17, 1989, and May 27, 2006. Image courtesy of USGS.
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Aral Sea Continues to Shrink
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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
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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.
Chlorophyll and Currents in the Red Sea
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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
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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. This image, captured by the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) instrument, shows wide swaths of the planet. On the right is the Sahara Desert, Earth’s biggest dust-producing machine. In the far upper left is North America, this dust storm’s likely target. In the center of the picture, intermixed with clouds, is the swirling dust storm, nearly the size of the United States.
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Fernandina Volcano, Galapagos Islands
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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.
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Smoke Over Great Australian Bight
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Published December 22, 2004
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Arctic Blast Chills Eastern United States
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Published December 21, 2004
Particle Pollution in Eastern China
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Published December 16, 2004
Subtropical Blooms in New Zealand Waters
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Published December 3, 2004
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Typhoon Nanmadol
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Published December 2, 2004
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