The Convair 990's high-altitude and performance capabilities 

 were used to advantage in carrying out a number of missions during 

 July 1972 to obtain quantitative data on the effects of atmospheric 

 effects on remote measurements of water color. These data were 

 obtained with a number of precision spectrometers and 

 multispectral scanning spectrometers on the aircraft as it flew 

 specific ground tracks at altitudes of about 45,000 feet and at 1,000 

 feet. Flights were coordinated with the work of scientists at sea who 

 obtained pertinent "sea-truth" data on water color, turbidity, and 

 chlorophyll concentrations. The data from these missions are being 

 used in defining design and performance characteristics for ocean 

 color remote sensors for planned satellite missions. 



The NASA Convair 990 aircraft participated in a joint US/USSR 

 experiment over the Bering Sea early in 1973. The aircraft served as a 

 platform for visible and passive microwave radiometer remote 

 sensors which obtained data on sea ice properties, sea state, sea 



Si - 



V T 







I 

 I 



This passive microwave image of Arctic sea-ice was made from the NASA CV 

 990 aircraft. The dark area represents ice formed several year earlier. 



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