NASA Studies Vegetation Canopy Water Content, Soil Moisture
by Beth Hagenauer for NASA Dryden Public Affairs Edwards AFB CA (SPX) Dec 23, 2011
Morning, left, and afternoon, right, MASTER imagery of the study site consisting of three pistachio and eight almond blocks. Lightness in color on the right image indicates the lower vegetation canopy water content. Labels on left image are orchard block numbers. (University of California, Davis)
Scientists seeking insight into the role vegetation plays in water fluctuation between soil and the atmosphere recently conducted research using specialized sensors during a series of NASA Airborne Science flights over California's San Joaquin Valley.
A high-altitude ER-2, a DC-8 flying laboratory and Gulfstream III research aircraft, all based at NASA's Dryden Aircraft Operations Facility in Palmdale, Calif., made a series of flights over the southern San Joaquin Valley, one of the most productive agricultural areas of the United States, between J…
Inevitably, year-end lists invite plenty of debate and criticism, and Scientific American's is no exception. Certainly, we could have included the discovery of new worlds beyond our solar system, including Kepler 22 b, an exoplanet in the "Goldilocks" zone of habitability, as well as the first known Earth-size exoplanets. Or noted the accumulating evidence suggesting that hydraulic fracturing, or fracking, to retrieve natural gas is likely to contaminate water supplies. (Final New York State regulations, expected in mid-2012, could determine the future of fracking in the U.S.)
Other candidates included the report of a new target against HIV, in which a doorway to infection (the so-called CCR5 receptor on i…
Evergreen International Airlines will gain a second converted freighter in 2012
Evergreen International Airlines, an international cargo carrier, will gain a second 747-400 converted freighter next year under a Boeing program to modify the widebody at a plant in Xiamen, China.
The conversion will mark the delivery of the 50th edition of the jet to be converted into a freighter. Boeing has shifted its line for production of new 747 freighters to the next-generation 747-8.
Evergreen, based in McMinnville, Oregon, said the converted aircraft “will bring improvements in economics, efficiency and environmental performance.” The carrier currently operates one 747-400 and nine 747-200s.
"Reaching the 50 conversion milestone shows that air cargo industry recognizes the value of the 747-400BCF,” said Dan da Silva, vi…