Question

Weather question.

4). Consider the mountain below. An air parcel at the western base of the mountain has a temperature of 22 C and a dewpoint of 17 C. As the air ascends and descends, it will either cool (or warm in the case of descent) at the dry adiabatic lapse rate of -10 C/km, or at the moist adiabatic lapse rate of -6 C/km. Remember, the equation for the lapse rate is SudT/dz. (T -Tita)/(z.-Z.). Answer the following questions. Show all math: Dry - Moist 10°C per 1000m 6°c per 1000m - 10.-220 G 17

Answer 1

Solution Things we should know before solving: a) MAIR (moist adabatic lapse rate) applies to au pared that is rising, 6 DAUR ( pay adiabatic lapse rote) applies to air parcel that is descending.. c) IL air parce mise its tempera- ture decreases, as it expands and cool, while air parce's temperature increases if it descends. رميه N ra Height at which parcel becomes saturated a 7 .. we know Dew point temperature is the temperature at which the air parcel becomes sotmoted hue Dop=17°C " T » - dT a Toa Ti Z

= -6 °C /km = 170-230 - ?f - 0 .. (ZA-O) = -5°C - - 6°C / kom -> zg = 5 km =10.833 km G so, ot 0.833 km of Height air parcel becomes saturated.. 6 " Discussed above an in rising upwards so its temperature will decrease MAURIT = 60c/km = d I dz dT = 6°c/km x 3 km F 18°C air parcel's temperature of the of the mountain Car 3room/ken) 22°C 18°c T = 4°C