Clouds in the Atmosphere Puffy cumulus clouds, which are made of water droplets,

Question

Clouds in the Atmosphere Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere. Wispy cirrus clouds, which are made of ice crystals, occur only at higher altitudes. On a typical day and at altitudes less than 11 km the temperature at an altitude y is given by T = T_0 - alpha y. where T_0 = 10.5 degree C and alpha = (6.00 degree C)/(1000 m) Find the altitude y (measured from sea level) above which wispy cirrus clouds can start to occur. (Ignore supercooling of water droplets.) Express your answer numerically in kilometers, using three significant figures.

Explanation / Answer

T=0
0= 10.5 - 6y

y= 1.75 km

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