![]() ![]() This new insight was made possible by a nearly 20-year-long data record from a NASA instrument orbiting the Earth on two satellites. The greening phenomenon was first detected using satellite data in the mid-1990s by Ranga Myneni of Boston University and colleagues, but they did not know whether human activity was one of its chief, direct causes. The effect stems mainly from ambitious tree planting programs in China and intensive agriculture in both countries. A new study shows that the two emerging countries with the world’s biggest populations are leading the increase in greening on land. The world is literally a greener place than it was 20 years ago, and data from NASA satellites has revealed a counterintuitive source for much of this new foliage: China and India. The collection are located under the Aerial Imagery category Digital Object Identifier (DOI)Īircraft Scanner Digital Object Identifier (DOI) number: /10.5066/F7057D56Īircraft Scanner Digital Object Identifier (DOI) number: /10.U003cstrongu003eCredits: NASA/NASA Earth Observatory/Joshua Stevensu003c/strongu003e Advanced Solid-state Array SpectroradiometerĮarthExplorer can be used to search, preview, and download Aircraft Scanner collection data.Other airborne imagery collections can be found at: Coverage MapsĬoverage Maps indicating the availability of Aircraft Scanners imagery are available for download. SSC operates the medium-altitude Learjet 23 that carries TIMS. ARC operates the high-altitude ER-2, which carries TIMS and TMS and formerly operated the medium-altitude C-130B, which carried TIMS and NS-001. TIMS data have been used extensively in geology and volconology research in the western United States, Hawaiian Islands, Europe and Russia.Īircraft platforms for TIMS, NS-001 and TMS are operated by the NASA Ames Research Center (ARC) and the NASA Stennis Space Center (SSC). Used as an airborne geologic remote sensing tool, the TIMS acquires emitted and reflected thermal data that are useful in the discrimination of silicate, carbonate and hydrothermally altered rocks. TIMS is a multispectral scanning system using a dispersive grating and a six element Mercury-cadmium-telluride (HgCdTe) detector array to produce six discrete channels in the 8.2 to 12.2 micron region. NASA Stennis Space Center (SSC), the Jet Propulsion Laboratory (JPL) and Daedalus Corporation have developed the Thermal Infrared Multispectral Scanner (TIMS) for exploiting mineral signature information. The spectral bandwidths of each channel are fixed by design: The eight-channel detector subsystem consists of a six-element array and separate detectors for measuring reflected infrared energy and thermal infrared energy. The scanner collects multispectral data in the seven LANDSAT-4 and -5 Thematic Mapper bands plus a band from 1.13 to 1.35 micrometers. The NS-001 multispectral scanner was flown aboard a NASA C-130B aircraft and is a line-scanning device designed to simulate Landsat TM sensor performance. Louis, Mississippi.Limited international acquisitions also are available. Data are collected from selected areas over the conterminous United States, Alaska, and Hawaii by NASA ER-2 and NASA C-130B aircraft operating from the NASA Ames Research Center (ARC) in Moffett Field, California, and by NASA Learjet aircraft operating from Stennis Space Center in Bay St. The Aircraft Scanners data set contains digital imagery acquired from several multispectral scanners including NS-001 Mutispectral scanner, Daedalus thematic mapper simulator (TMS), scanners and the thermal infrared multispectral scanner (TIMS). NS-001 multispectral scanner data over Death Valley, California(Public domain) ![]()
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