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RAMPing Up
International teamwork yields a high-resolution map of Antarctica.
MODIS Measures Fraction of Sunlight Absorbed by Plants
This composite image over the continental United States wasproduced with data acquired by the Moderate-resolution ImagingSpectroradiometer (MODIS) during the period March 24—April 8, 2000.The image is a map of the fraction of the photosyntheticallyavailable radiation that was absorbed by land…
Significant Event Report for Week Ending 6/2/2000
Cassini Significant Event Report For Week Ending 06/02/00 The most recent spacecraft telemetry data was acquired from the Madridtracking station on Wednesday, 5/31. The Cassini spacecraft is in anexcellent state of health and is operating normally. The speed of the…
MODIS Measures Total U.S. Leaf Area
This composite image over the continental United States wasproduced with data acquired by the Moderate-resolution ImagingSpectroradiometer (MODIS) during the period March 24 – April 8, 2000.The image is a map of the density of the plant canopycovering the ground. It…
Peering into the Heart of the Crab Nebula
In the year 1054 A.D., Chinese astronomers were startled by the appearance of a new star, so bright that it was visible in broad daylight for several weeks. Today, the Crab Nebula is visible at the site of that bright…
Landsat 7 land cover maps to benefit Chesapeake Bay watershed
“Smarter” land use planning and better estimates of polluted water runoff acrossthe 64,000 square-mile (110,000-square-kilometer) Chesapeake Bay watershed are onthe horizon thanks to new land cover maps being produced by the Mid-AtlanticRegional Earth Science Applications Center (RESAC) at the University…
Landsat 7 Reveals Large-scale Fractal Motion of Clouds
Clouds off the Chilean coast show a unique pattern called a “von Karman vortex street.”
Polar Stratospheric Clouds
Scientists recently discovered that polar stratospheric clouds,long known to play an important role in Antarctic ozonedestruction, are occurring with increasing frequency in the Arctic.These high altitude clouds that form only at very low temperatureshelp destroy ozone in two ways—they provide…
Significant Event Report for Week Ending 5/26/2000
Cassini Significant Event Report For Week Ending 05/26/00 The most recent spacecraft telemetry data was acquired from the Goldstonetracking station on Wednesday, 5/24. The Cassini spacecraft is in anexcellent state of health and is operating normally. Activities this weekinclude the…
SeaWiFS views hurricane Aletta
The year’s first Northeast Pacific hurricane, Aletta, appears in this imagefrom the Sea-viewing Wide Field-of-view Sensor (SeaWiFS). On May 24, 2000 thehurricane was spinning 300 miles off the coast of Mexico with sustained winds of80 miles per hour and gusts…
Learning to Fly
Mission managers had to work through some exciting episodes during the launch and initial deployment of NASA’s Terra satellite
MISR Shows South Atlantic Anomaly
Even before the cover opened, the MISR instrument began making scientific measurements. The MISR cameras, designed to detect visible light, are also sensitive to radiation in Earth’s upper atmosphere. With the cover closed, the effects of this radiation stand out.…
SRTM Image of Hokkaido, Japan
The southeast part of the island of Hokkaido, Japan, is an area dominated byvolcanoes and volcanic caldera. The active Usu Volcano is at the lower right edgeof the circular Lake Toya-Ko and near the center of the image. The prominent…
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