Analytical solution for a pollutant dispersion model with photochemical reaction in the atmospheric boundary layer

This paper presents an analytical solution for the three-dimensional advection-diffusion equation applied to the dispersion of pollutants that form in the Atmospheric Boundary Layer (ABL). Some substances, when emitted in ABL suffer photochemical reactions producing secondary pollutants, so that a source term is included in the advection-diffusion equation to represent this reaction. The model was applied to simulate the dispersion and transport of ozone (O3) produced by photochemical reactions from nitrogen dioxide (NO2), pollutant emitted by burning fossil fuels by automotive vehicles. The pollutant concentration fields obtained by the proposed solution are compared with mixing ratio data obtained by monitoring the air quality in the metropolitan area of Porto Alegre. From the analysis of the results one verifies that the inclusion of the term proposed to represent a photochemical reaction of a reactive pollutant allows to predict ozone concentrations in the ABL

Solução Analítica para um Modelo de Dispersão de Poluentes com Reação Fotoquímica na Camada Limite Atmosférica

This paper presents an analytical solution for three-dimensional advection-diffusion equation applied to the dispersion of reactive pollutants emitted into the Atmospheric Boundary Layer (PBL). Some substances when emitted in PBL suffer photochemical reactions, so a source term is included in the advection-diffusion equation to represent this reaction, turning the model more realistic. The pollutant concentration fields obtained by the proposed solution are compared with the mixing ratio data obtained by monitoring the air quality in the metropolitan region of Porto Alegre. With the analysis of the results can be seen that the inclusion of the term proposed to represent a photochemical reaction of a reactive pollutant, a is a new proposal for the prediction of pollutant concentration in PBL.Este trabalho apresenta uma solução analítica para a equação de advecção-difusão tridimensional aplicada à dispersão de poluen- tes reativos lançados na Camada Limite Atmosférica (CLA). Algumas substâncias quando emitidas na CLA sofrem reações fotoquímicas, sendo assim um termo fonte é incluído na equação de advecção-difusão para representar esta reação. Os campos de concentração do poluente obtidos pela solução proposta são comparados com dados de razão de mistura obtidos pelo monitoramento da qualidade do ar na Região Metropolitana de Porto Alegre. Com a análise dos resultados pode-se verificar que a inserção do termo proposto para representar uma reação fotoquímica de um poluente reativo consiste numa nova proposta para a previsão de concentração desse tipo de poluente na CLA

Analytical solution for a pollutant dispersion model with photochemical reaction in the atmospheric boundary layer

This paper presents an analytical solution for the three-dimensional advection-diffusion equation applied to the dispersion of pollutants that form in the Atmospheric Boundary Layer (ABL). Some substances, when emitted in ABL suffer photochemical reactions producing secondary pollutants, so that a source term is included in the advection-diffusion equation to represent this reaction. The model was applied to simulate the dispersion and transport of ozone (O3) produced by photochemical reactions from nitrogen dioxide (NO2), pollutant emitted by burning fossil fuels by automotive vehicles. The pollutant concentration fields obtained by the proposed solution are compared with mixing ratio data obtained by monitoring the air quality in the metropolitan area of Porto Alegre. From the analysis of the results one verifies that the inclusion of the term proposed to represent a photochemical reaction of a reactive pollutant allows to predict ozone concentrations in the ABL

The Human Affectome

Over the last decades, the interdisciplinary field of the affective sciences has seen proliferation rather than integration of theoretical perspectives. This is due to differences in metaphysical and mechanistic assumptions about human affective phenomena (what they are and how they work) which, shaped by academic motivations and values, have determined the affective constructs and operationalizations. An assumption on the purpose of affective phenomena can be used as a teleological principle to guide the construction of a common set of metaphysical and mechanistic assumptions—a framework for human affective research. In this capstone paper for the special issue “Towards an Integrated Understanding of the Human Affectome”, we gather the tiered purpose of human affective phenomena to synthesize assumptions that account for human affective phenomena collectively. This teleologically-grounded framework offers a principled agenda and launchpad for both organizing existing perspectives and generating new ones. Ultimately, we hope Human Affectome brings us a step closer to not only an integrated understanding of human affective phenomena, but an integrated field for affective research

The Human Affectome

Over the last decades, the interdisciplinary field of the affective sciences has seen proliferation rather than integration of theoretical perspectives. This is due to differences in metaphysical and mechanistic assumptions about human affective phenomena (what they are and how they work) which, shaped by academic motivations and values, have determined the affective constructs and operationalizations. An assumption on the purpose of affective phenomenacan be used as a teleological principle to guide the construction of a common set of metaphysical and mechanistic assumptions—a framework for human affective research. In this capstone paper for the special issue “Towards an Integrated Understanding of the Human Affectome”, we gather the tiered purpose of human affective phenomena to synthesize assumptions that account for human affective phenomenacollectively. This teleologically-grounded framework offers a principled agenda and launchpad for both organizing existing perspectives and generating new ones. Ultimately, we hope Human Affectome brings us a step closer to not only an integrated understanding of human affective phenomena, but an integrated field for affective research