Effect Dynamic Stability of Atmospheric Boundary Layer on Plume Downward Flux Emitted from Daura Refinery Stacks

The vertical motion of air that enhances or restricts the atmospheric turbulence through boundary layer is known as "atmospheric stability", in which any movement components such water vapor, aerosols, etc. are affected by stability. aim this research to test effect stability on amount downward aersols flux at 10um (PM10) emission from stacks Daura refinery, and estimated deposition dust aerosols PM10 area around refinery. In study, hourly based similar theory Monin-Obukhov length calculated archived data European Center for Medium Range Weather Forecast, velocity (Vd) emitted Refinery using parameter (L). concentration according Gaussian model, used along with partical size order produce sedimentation (Fp) distances 1000, 5000 10000 m stack point sources emission. Results show areas located south southeast refinery receive large amounts deposited values stable weather conditions, where accumulated during one month have recorded 1.5 million μg /m2.s January a distance 1000 center stacks, while reaches 532 μg/m2.s July due high rates resulting burning fuel oil July. percentages decreased 1712 322839 10 km July, respectively. According method, square meters can be time, if conditions domain wind direction known.