Meteorology for Air Pollution Control Engineers14

Meteorology for Air Pollution Control Engineers14 - n So...

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1 3.3 Atmospheric Stability n The temperature elevation relationship sketched in Fig.  5.5 is the principal determinant of atmospheric stability. n The reason is sketched in Fig. 5.6 (next slide). On each of the temperature sketches the adiabatic lapse  rate, dT/dz = 9.8 oC/km, is shown as the dashed line,  whereas the actual lapse rate is shown as solid line.
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3 n In part (a), if some parcel of air is moved up or down  quickly, there will not be enough time for much heat to  transfer to or from the surrounding air.
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Unformatted text preview: n So the air parcel will follow the adiabatic curve in Fig. 5.6, not only in part (a) but also in parts (b, c, and d). 4 n In part (a) this means that if the air parcel starts at some point where its temperature is the same as that of the surrounding parcels and it moves upward along the adiabatic curve, it will be at a higher temperature than the surrounding parcels in its new location. n So buoyancy will force it to continue to move upward....
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This note was uploaded on 10/14/2011 for the course CIVL CIVL345 taught by Professor Hsinchu during the Spring '11 term at SUNY College of Environmental Science and Forestry.

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Meteorology for Air Pollution Control Engineers14 - n So...

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