The Role of Planetary Boundary-Layer Parameterizations in the Air Quality of an Urban Area with Complex Topography Export

@article{citeulike:3939867, abstract = {Abstract\ \ The effect of different planetary boundary-layer (PBL) parameterization schemes on the spatial distribution of atmospheric pollution over the complex topography of the greater Athens area is investigated. Four PBL schemes originally implemented in a numerical meteorological model and a fifth one simulating the urban effect are examined. Two different atmospheric conditions are analyzed; a typical summer and a typical winter pollution episode. The relative importance of chemical and physical processes of the pollution predictions is discussed using process analysis. It is revealed that, for primary pollutants, a local scheme seems more adequate to represent the maximum observed concentrations while, completely different in structure, a non-local scheme reproduces the mean observed values in the basin. Concerning secondary pollutants, peak concentration differences, due to the different PBL schemes, are smoothed out. Nevertheless, the PBL scheme selection shapes the horizontal and the vertical extension of maximum values. The non-local and semi non-local schemes are superior to the others, favouring strong vertical mixing and transport towards the surface. The stronger turbulence accommodated effectively by the semi non-local urban scheme enhances ozone production along the sea-breeze axis and preserves the high ozone concentrations during the nighttime hours in the urban core.}, author = {Bossioli, Elizabeth and Tombrou, Maria and Dandou, Aggeliki and Athanasopoulou, Eleni and Varotsos, Kostas}, citeulike-article-id = {3939867}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s10546-009-9349-7}, citeulike-linkout-1 = {http://www.springerlink.com/content/p814k34672547040}, doi = {10.1007/s10546-009-9349-7}, journal = {Boundary-Layer Meteorology}, posted-at = {2009-02-09 15:12:55}, priority = {2}, title = {The Role of Planetary Boundary-Layer Parameterizations in the Air Quality of an Urban Area with Complex Topography}, url = {http://dx.doi.org/10.1007/s10546-009-9349-7} }

TY - JOUR ID - citeulike:3939867 L3 - citeulike-article-id:3939867 N2 - Abstract  The effect of different planetary boundary-layer (PBL) parameterization schemes on the spatial distribution of atmospheric pollution over the complex topography of the greater Athens area is investigated. Four PBL schemes originally implemented in a numerical meteorological model and a fifth one simulating the urban effect are examined. Two different atmospheric conditions are analyzed; a typical summer and a typical winter pollution episode. The relative importance of chemical and physical processes of the pollution predictions is discussed using process analysis. It is revealed that, for primary pollutants, a local scheme seems more adequate to represent the maximum observed concentrations while, completely different in structure, a non-local scheme reproduces the mean observed values in the basin. Concerning secondary pollutants, peak concentration differences, due to the different PBL schemes, are smoothed out. Nevertheless, the PBL scheme selection shapes the horizontal and the vertical extension of maximum values. The non-local and semi non-local schemes are superior to the others, favouring strong vertical mixing and transport towards the surface. The stronger turbulence accommodated effectively by the semi non-local urban scheme enhances ozone production along the sea-breeze axis and preserves the high ozone concentrations during the nighttime hours in the urban core. JF - Boundary-Layer Meteorology TI - The Role of Planetary Boundary-Layer Parameterizations in the Air Quality of an Urban Area with Complex Topography AU - Bossioli, Elizabeth AU - Tombrou, Maria AU - Dandou, Aggeliki AU - Athanasopoulou, Eleni AU - Varotsos, Kostas UR - http://dx.doi.org/10.1007/s10546-009-9349-7 ER -