H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates
A model for dispersion of pollutants released from a continuous source in the atmospheric boundary layer is applied in order to assess the effect of different estimates of the key micrometeorological variables that represent the stability regimes or turbulent mechanisms. The model includes continuou...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS13007_v_n_p124_Ulke http://hdl.handle.net/20.500.12110/paper_NIS13007_v_n_p124_Ulke |
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paper:paper_NIS13007_v_n_p124_Ulke2023-06-08T16:39:37Z H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates Ulke, Ana Graciela Air pollution modelling Dispersion model Model evaluation Prairie grass Air pollution Atmospheric boundary layer Boundary layers Parameter estimation Pollution Wind Air pollution modelling Atmospheric conditions Atmospheric dispersion Crosswind integrated concentrations Dispersion modeling Interesting information Model evaluation Prairie Grass Atmospheric movements A model for dispersion of pollutants released from a continuous source in the atmospheric boundary layer is applied in order to assess the effect of different estimates of the key micrometeorological variables that represent the stability regimes or turbulent mechanisms. The model includes continuous profiles of the wind speed and eddy diffusivity for the atmospheric boundary layer. The evaluation considers the values and/or methodologies to obtain the input parameters that are available in the literature. The Prairie Grass diffusion experiment data were selected because the runs covered both stable and unstable atmospheric conditions for near-surface releases. A number of model evaluations were also reported in the literature using this dataset and the present results can be compared with other studies as well. The dispersion model performed satisfactorily in the estimation of the crosswind integrated concentration for surface releases from a continuous point source in a variety of stability conditions. The distinct micrometeorological input parameters caused, in general, minor differences in the magnitudes of diffusion and hence, in the concentrations. Some particular runs that were conducted under very stable or unstable conditions showed a greater impact and, in consequence, they gave interesting information on particular situations in which the methodologies to obtain the micrometeorological relevant parameters must be carefully analyzed. Fil:Ulke, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS13007_v_n_p124_Ulke http://hdl.handle.net/20.500.12110/paper_NIS13007_v_n_p124_Ulke |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Air pollution modelling Dispersion model Model evaluation Prairie grass Air pollution Atmospheric boundary layer Boundary layers Parameter estimation Pollution Wind Air pollution modelling Atmospheric conditions Atmospheric dispersion Crosswind integrated concentrations Dispersion modeling Interesting information Model evaluation Prairie Grass Atmospheric movements |
| spellingShingle |
Air pollution modelling Dispersion model Model evaluation Prairie grass Air pollution Atmospheric boundary layer Boundary layers Parameter estimation Pollution Wind Air pollution modelling Atmospheric conditions Atmospheric dispersion Crosswind integrated concentrations Dispersion modeling Interesting information Model evaluation Prairie Grass Atmospheric movements Ulke, Ana Graciela H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| topic_facet |
Air pollution modelling Dispersion model Model evaluation Prairie grass Air pollution Atmospheric boundary layer Boundary layers Parameter estimation Pollution Wind Air pollution modelling Atmospheric conditions Atmospheric dispersion Crosswind integrated concentrations Dispersion modeling Interesting information Model evaluation Prairie Grass Atmospheric movements |
| description |
A model for dispersion of pollutants released from a continuous source in the atmospheric boundary layer is applied in order to assess the effect of different estimates of the key micrometeorological variables that represent the stability regimes or turbulent mechanisms. The model includes continuous profiles of the wind speed and eddy diffusivity for the atmospheric boundary layer. The evaluation considers the values and/or methodologies to obtain the input parameters that are available in the literature. The Prairie Grass diffusion experiment data were selected because the runs covered both stable and unstable atmospheric conditions for near-surface releases. A number of model evaluations were also reported in the literature using this dataset and the present results can be compared with other studies as well. The dispersion model performed satisfactorily in the estimation of the crosswind integrated concentration for surface releases from a continuous point source in a variety of stability conditions. The distinct micrometeorological input parameters caused, in general, minor differences in the magnitudes of diffusion and hence, in the concentrations. Some particular runs that were conducted under very stable or unstable conditions showed a greater impact and, in consequence, they gave interesting information on particular situations in which the methodologies to obtain the micrometeorological relevant parameters must be carefully analyzed. |
| author |
Ulke, Ana Graciela |
| author_facet |
Ulke, Ana Graciela |
| author_sort |
Ulke, Ana Graciela |
| title |
H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| title_short |
H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| title_full |
H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| title_fullStr |
H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| title_full_unstemmed |
H15-200: Sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| title_sort |
h15-200: sensitivity study of the impact of meteorological input parameters on atmospheric dispersion estimates |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_NIS13007_v_n_p124_Ulke http://hdl.handle.net/20.500.12110/paper_NIS13007_v_n_p124_Ulke |
| work_keys_str_mv |
AT ulkeanagraciela h15200sensitivitystudyoftheimpactofmeteorologicalinputparametersonatmosphericdispersionestimates |
| _version_ |
1769175848448950272 |