New Questions Raised by Global Change Study Administration (NASA) Goddard Space Flight Center's A National Atmospheric and Space Administration Wallops Flight Facility will use the Global Positioning (NASA) study of the Sahara Desert indicates that the System (GPS) and a laser ranging instrument aboard world's largest desert has undergone a variety of a P-3 Orion aircraft to measure surface elevation of fluctuations in size during the past 11 years. polar glaciers to determine ice buildup or melting due Since 1980, scientists at NASA's Goddard Space to global climate changes. Flight Center have been studying data fro m a variety of The laser will scan a strip 656 ft wide immediately earth-observing satellites in an effort to provide insight below the aircraft, measuring the surface elevations on global climatic change. A wide range of comple- of the glacier to a target accuracy of 4 inches. mentary studies of satellite data have been conducted, "Knowledge of the ice budget in polar glaciers will one of which focused on the size of the Sahara Desert provide an indirect measure of sea level change s and in Africa using meteorological satellite data. may indicate trends in worl d climate," said Bill Drabill, The
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Oct 1, 1991
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