Atmospheric Monitoring Articles

  • Environmental measurements at Monte Cimone GAW station

    Continuous atmospheric CO 2 measurements performed by IAFMC at Mt. Cimone Observatory in the period 1980–2009 were analysed in order to select data representing background concentrations. A filtering technique was used to smooth background data and to separate the annual cycle from the long-term increase. The average growth rate of CO 2 was found to be 1.708 ± 0.003 ppm/year, while annual ...

    By Inderscience Publishers

  • Evaluation of the influence of micrometeorological data on concentration estimates

    A dispersion model for continuous releases of pollutants in the atmospheric boundary layer is applied to study the influence on modelled concentrations of different estimates of the key micrometeorological variables that represent the dispersion processes. The modelling approach is based on the advection-diffusion equation and includes profiles of wind and eddy diffusivity for the entire ...

    By Inderscience Publishers

  • Sensitivity analysis of the modelled deposition of 137 Cs on the Japanese land following the Fukushima accident

    Dispersion of radioactive material released to the atmosphere from the Fukushima Daiichi Nuclear Power Plant accident in Japan was modelled to assist the French Government in effectively providing public health advice to its citizens in Japan. It required estimation of radiation doses based on realistic scenarios and atmospheric dispersion modelling. In this paper, sensitivity studies are ...

    By Inderscience Publishers

  • Atmospheric dispersion and individual exposure of hazardous materials. Validation and intercomparison studies

    In a previous study, new approaches have been introduced in the CFD-RANS modelling, according to which the concentration time scales are estimated as a function not only of the flow turbulence time scales but also of the pollutant travel times. The new approaches have been implemented for the calculation of the concentration fluctuation dissipation time scale and the maximum individual exposure ...

    By Inderscience Publishers

  • Inverting time dependent concentration signals to estimate pollutant emissions in case of accidental or deliberate release

    We test the reliability of an inverse model to estimate the amount of mass released instantaneously by a source of pollutant in a turbulent boundary layer. To that purpose we use wind tunnel experiments simulating the dispersion of puffs due to the impulsive release of pollutant. For each of these emissions we recorded time dependent signals at fixed receptors. These single signals have been ...

    By Inderscience Publishers

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