STUDY OF PBL DYNAMICS OVER NORTHERN PLAINS IN FIXING STACK HEIGHT OF A SUPER THERMAL POWER-STATION

The Planetary Boundary Layer plays an important role in air pollution meteorology and in fixing the stack height of major air-polluting indu stries, including the super thermal power plants. In India a super the rmal power plant is being set up at Yamunanagar (30.1-degrees-N, 77.33 -degrees-E) and it has been studied using an acoustic sounder with a s tack height of 220m which would be the optimum height to keep the phys ical stack above surface based inversions for 80 per cent of the time and the elevated inversions for 50 per cent of time above. However, th e hot plume rise would inject any pollutants above the surface based i nversions for 95 per cent of the time.