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Weather Dew Point/ Lapse Rate Questions?

By AntiVirus Posted in: RISING

Air temp at sea level is 25 degrees C, by adiabatic cooling, along the DALR (10 Degrees C/Km) the air reaches its dew point of 16 Degrees C, but continues to rise along the SALR (6 degrees/km) until it reaches the mountain summit at which time the temperature has dropped to -6 degrees C. The air then descends along the lee side of the range reaching the floor of the interior basin at 450 m
1)At what altitude was the dew point temperature reached? and what is the altitude of the mountain summit??
im just confused on where to start. Please help :) :)

  1. Anonymous Says

    The temperature must fall 25 – 16 = 9 degrees to reach the dew point. At the dry adiabatic lapse rate it falls 10 degrees per kilometer, so it must have risen 9/10 kilometers to fall 9 degrees. It then drops 16 – (–6) = 22 degrees more at the moist rate of 6 C/km, so it rose 22 C/6C/km more.
    You can fill in the rest of the details.

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