MEASUREMENT RANGE REQUIRED OF METEOROLOGICAL EQUIPMENT
AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA HANSCOM AFB
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Meteorological instruments must operate properly to accurately measure conditions too extreme for the design and operation of other equipment. This report develops the improbable extreme conditions which surface instruments must be designed to measure temperatures from -140 F to 160 F, dewpoint at any temperature, T in deg F, given by T2-80, rainfall during t minutes square root of t divided by 2 inches, wind speeds up to 250 mph, and pressure from 506 to 1062 mb. Atmospheric sounding systems must be able to measure temperatures and corresponding dewpoints over the same range, winds up to 300 mph below 100,000 ft, and pressures whose ratio to the Standard Atmosphere pressure, p, at the maximum height they are expected to attain, is 0.1 6 log p up to 133 km, and 0.1 at still higher levels.