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Hawaiian Islands
This Multiangle Imaging Spectro-Radiometer (MISR) image of fiveHawaiian Islands was acquired by the instrument’s vertical-viewing (nadir) camera on June 3, 2000. The image shows the islands of Oahu, Molokai, Lanai, Maui, andKahoolawe. The prevailing Pacific trade winds bring higher levelsof…
Escondida Mine, Chile
The Escondida copper, gold, and silver open-pit mine began operations in 1990.
Frozen Soils and the Climate System
While scientists have learned to interpret receding glaciers as well as changing trends in snow cover, sea ice extent, and sea level as “indicators” of climate change, they are still working to better understand the role that frozen soils play…
Ultraviolet Radiation Exposure
NASA’s Total Ozone Mapping Spectrometer(TOMS) provides measurements that enable scientists to accuratelyestimate how much of the sun’s UV-B (290 to 320 nm) radiation reaches the Earth’ssurface. Too much exposure to these wavelengths causes sunburn inhuman skin. The false-color image above…
Smog Layer Over Upstate New York
The STS-92 Space Shuttle astronauts photographed upstate New York at sunset on October 21, 2000. Water bodies (Lake Ontario, Lake Erie, the Finger Lakes, the St. Lawrence and Niagara Rivers) are highlighted by sunglint (sun reflecting off the water surface),…
Mt. Pinos and the San Joaquin Valley
Ask any astronomer where the beststargazing site in Southern California is, and chances are they’ll sayMt. Pinos. In this perspective view generated from Shuttle Radar Topography Mission (SRTM) elevation data,the snow-capped peak is seen rising to an elevation of 2,692…
Lake Effect Clouds
The lake effect is particularly clear in this Sea-viewing Widefield-of-view Sensor (SeaWiFS) true-color image of the North AmericanGreat Lakes region, acquired December 5, 2000. Lakes Nipigon, Superior,and Michigan show striking contrasts between clear and cloudy air as thewind blows from…
Significant Event Report for Week Ending 12/8/2000
Cassini Significant Event Report For Week Ending 12/08/00 The most recent spacecraft telemetry was acquired from the Madrid tracking station on Wednesday, December 6th. The Cassini spacecraft is in an excellent state of health and is operating normally. The speed…
Atmospheric Vortices near Guadalupe Island
These Multi-angle Imaging Spectroradiometer (MISR) images from June 11, 2000 demonstrate a turbulent atmospheric flow pattern known as the von Karman vortex street.
Death Valley
Since different materials reflect and emit energy in differentways, the Advanced Spaceborne Thermal Emission and ReflectionRadiometer (ASTER), with its multi-spectral infrared channels, canprovide detailed information about the composition of Earth’ssurface. In this 3-D perspective view looking north over DeathValley, California,…
Ghostly Reflections in the Pleiades
This ghostly apparition is actually an interstellar cloud caught in the process of destruction by strong radiation from a nearby hot star. This haunting picture, snapped by the Hubble telescope, shows a cloud illuminated by light from the bright star…
City Lights of Europe
Growth in “mega-cities” is altering the landscape and the atmosphere insuch a way as to curtail normal photosynthesis. By using data from TheDefense Meteorological Satellite Program’s Operational Linescan System,researchers have been able to look at urban sprawl by monitoring theemission…
Fires and Smoke in Central Africa
This year’s fire season in central Africa may have been the most severe ever.This true-color image also shows the location of fires (red dots) in the DemocraticRepublic of the Congo, Angola, and Zambia. The image was taken by the Moderate-ResolutionImaging…
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