Journal article

Transitional dispersive scenarios driven by mesoscale flows on complex terrain under strong dry convective conditions

Palau J, Pérez-Landa G, Millán M ...see all

Atmospheric Chemistry and Physics, vol. 9, issue 1 (2009) pp. 119-130

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By experimentation and modelling, this paper analyses the atmospheric
dispersion of the SO(2) emissions from a power plant on complex terrain
under strong convective conditions, describing the main dispersion
features as an ensemble of ``stationary dispersive scenarios{''} and
reformulating some ``classical{''} dispersive concepts to deal with the
systematically monitored summer dispersive scenarios in inland Spain.
The results and discussions presented arise from a statistically
representative study of the physical processes associated with the
multimodal distribution of pollutants aloft and around a 343-m-tall
chimney under strong dry convective conditions in the Iberian Peninsula.
This paper analyses the importance of the identification and physical
implications of transitional periods for air quality applications. The
indetermination of a transversal plume to the preferred transport
direction during these transitional periods implies a small (or null)
physical significance of the classical definition of horizontal standard
deviation of the concentration distribution.

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  • J. L. Palau

  • G. Pérez-Landa

  • M. M. Millán

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