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A^ CLIMATOLOGY 



Figure 4.20. Diurnal, seasonal, and vertical variation of No /or Miami, Fla. {Ml A). 



profile chart for this station indicates the mild influx of tropical air in the 

 summer at the surface and the convective mixing of this air to great heights 

 by the strong thunderstorm activity common to the area. The high No 

 values between 2 and 3 km are perhaps due to superior air subsiding on 

 the lee slopes of the Rocky Mountains. Relatively intense diurnal ranges 

 are apparent in both summer and winter, as the day to night variations of 

 this high plains climate are controlled to a large extent by radiational heat- 

 ing and cooling through the thin atmospheric blanket at high elevations. 



