PMID: 11924865Apr 2, 2002Paper

Modeling assessment of air emission flux of mercury from soils in terrestrial landscape components: model tests and sensitivities

Journal of the Air & Waste Management Association
loannis X Tsiros

Abstract

The abilities of a screening-level model to predict variations in elemental mercury (Hg0) air emissions from soils in terrestrial landscapes are examined by comparing simulation results to published observational data and by performing sensitivity analyses. Despite uncertainties and simplifications, the model results obtained offer some degree of confidence in the model's joint ability to relate readily available environmental parameters to airborne emissions of Hg predicted by coupling simple atmospheric and soil parameters with Hg cycling and transport algorithms. The model reasonably predicted the observational data in the considered data sets except for one site for which significant uncertainty was associated with model input data. Predictions are consistent with many trends observed in the field studies; better predictions were obtained for nonvegetated systems (relative errors between 0.4 and 9.7%) than for shaded-soil landscapes (relative errors between 2.3 and 27%). The model reflected field data showing that daily average emission rates of Hg0, formed by the reduction of Hg(II), are primarily controlled by changes in solar radiation, soil moisture, temperature, and, to a lesser extent, wind conditions. The model may h...Continue Reading

References

Jun 1, 1999·Journal of the Air & Waste Management Association·T D BrownW J O'Dowd

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Citations

Jan 28, 2012·The Science of the Total Environment·Christopher W Moore, Mark S Castro
Oct 10, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Ioannis X Tsiros, Ioannis F Dimopoulos

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