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Teacher Background: How Satellites Work
(600 miles), the sensors scan the Earth's entire surface over a 24-hour period. The sensors are sensitive to visible light and infrared (IR) radiation. As each NOAA polar-orbiting satellite orbits the Earth, it sends back a constant stream of data. Instruments on board the satell...
Space, Inc.
document all kinds of important phenomena--for example: urban sprawl, water pollution, and coastal erosion. The data they gather have revolutionized the way earth-science research is done, and they offer new perspectives to decision makers facing global problems like deforestation and...
The Digital Earth: Understanding Our Planet in the 21st Century
need it the most. This is known as precision farming, or "farming by the inch." The Way Forward We have an unparalleled opportunity to turn a flood of raw data into understandable information about our society and out planet. This data will include not only high-resolution...
U.S. Satellite Imagery, 1960-1999
resolution. Such imagery and the reduced cost of attaining it when purchased commercially will permit the U.S. intelligence community to fill part of its needs via such commercial systems. Among the commercial satellites that are expected to produce high resolu...
New Light on Ice Motion (DAAC Study)
Rachel Hauser November 5, 2001 Detailed antarctic temperature and climate records date only from the late 1950s, with limited information dating from the turn of the 20th century. Now, using visible and near-infrared satellite imagery, scientists have pieced toge...
Eyes on the Bomb
obtained exclusively for this briefing book. All the photos were located and extracted from the extensive collections of U-2 and satellite imagery in the National Archives by Tim Brown of Talent-Keyhole.com. Many had never been extracted from the Archives' h...
A Burning Question (DAAC Study)
examined only spectral information, the differences between instrument channels," Christopher said. The researchers compared data from two sensors, the Advanced Very High Resolution Radiometer (AVHRR) and Earth Radiation Budget Experiment (ERBE) scanner, both flown on the N...
Domes of Destruction (DAAC Study)
schedule ASTER data to get detailed, high-resolution scenes.” Ramsey and his colleagues work with the Alaska Volcano Observatory (AVO) to regularly monitor volcanoes in the Aleutian region, as well as all of the Kamchatka Peninsula volcanoes in Russia. “These are a...
New Tools for Diplomacy (DAAC Study)
technologies are on the horizon, according to Sandalow. At least three companies now market Earth imagery products with an eye towards capturing some of the national security, scientific, and environmental monitoring markets. Space Imaging, a Colorado-based company, launched t...
A Disintegrating Glacier
Berg A had drifted 20 kilometers (about 12.5 miles) to the west, Berg B had drifted to the northeast, and a smaller section (C) remained grounded in front of the Ninnis Glacier. Massom, who has been studying the distribution of polar sea ice for 20 years, came across the Ninnis disint...
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