Assuming the normal lapse rate, given a temperature of 27.4°C at sea level...?

Question

Assuming the normal lapse rate, given a temperature of 27.4°C at sea level, what will the temperature be at 3000 meters?

Answer 1

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As an average, the International Civil Aviation Organization (ICAO) defines an international standard atmosphere (ISA) with a temperature lapse rate of 6.49 K(°C)/1,000 m (3.56 °F or 1.98 K(°C)/1,000 Ft) from sea level to 11 km (36,090 ft).

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3,000 meters * (6.49 °C/1,000 meters) = 19.47°C

Therefore:

Temperature at 3,000 meters = 27.4°C - 19.47°C

Temperature at 3,000 meters = 7.93°C <====== Answer!

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I hope this is helpful.

Source(s): http://en.wikipedia.org/wiki/Lapse_rate