Question

(3) Under clear skies on a windy day air is advected up and over mountain tops. (a) If the surface pressure in Boulder Colorado is 850 hPa and the temperature is 293K, what is the temperature at the top of Long's Peak? At the summit of the peak the pressure is 650 hPa. The water vapor pressure in Boulder Colorado is 10 hPa. (b) What is the specific volume of air at the top of the peak? (c) Please show that the specific work done by the parcel during its rise to the peak is given by w=- pdv=-( PV-pov.) , where the subscripts m and s indicate values at mountain top and the surface, respectively. Calculate the amount of work done during parcel expansion. Your number may surprise you if you compare it to typical values of CAPE (convective available potential energy). Y - 1

Answer 1

16 Week 08 47.318 2015 MONDAY 9 we we know for = 2 Surface Pressure = 850 hPa Temperature e 293k. Presane at peak 650 hPa Using Ideal Gas Equation ) 850 - 652. 293 - Tge 650x293 = 224k. So at peak Pemperaturer 224k. usinged 12 850 F 1fb) Specific Volume PV=RT V= Specific Volume R = 0.082 L atm krmol-1 "The body of evidence in scientific literature shows that pesticide exposure can adversel affect a child's neurological, respiratory, immune, and endocrine system, even at lov levels. Several pesticides, such as pyrethrins and pyrethroids, organophosphates and carbamates, are also known to cause or exacerbate asthma symptoms." - Beyond Pesticide

18 2015 Week 08 49 - 316 WEDNESDAY 65000 pa= 8 650 hoa è 0.64 ATM 9 0.648 V = 0.0828 22 4 2 => Vc0:082 x 224 = 28.6 L. 10.64 At Surface - Total pressure 850hpa + lohpa 2 860hpa 12 860 hp a = 86000 pa = 0.84 ATM B PV= R7 = 0.84x ve 0.0822 293 = v= 28.6L So since the change in volume to between Suface and peak so - pdv = 0. Pollution often disappears when we switch to renewable resources." - David Morris