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2. Consider a strong wind aloft that forces air to flow over the mountains from A to E, as in the diagram below. Assume the surface temperature at A is 21C and the dew point temperature is 5C; and that any moisture that condenses out of the air falls as precipitation and is left behind. The elevations are: A – 0 m; B – 3000 m; C – 1000 m; D – 5000 m; E – 500 m.
(i) What are the temperatures and dew point temperatures at B, C, D and E?
(ii) Identify where clouds are formed (hint: this is important to part (i).
(iii) How would your answer for E be different if there was no valley at C; that is, if the air flowed upward all the way from A to D?