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A tracer study of pollutant transport in a deep, Fjord valley
Abstract Tracer experiments with SF6 were conducted to study the transport and dispersion of gases released from an aluminium smelter in a complex fjord valley area of western Norway. Continuous records of meteorological parameters were used to estimate the vertical and horizontal dispersion within the maximum impact area downwind from the smelter hall. With along valley winds, turbulence seemed to depend upon surface roughness, vertical wind and temperature profiles in much the same way as in open terrain. Simple continuity calculations using a modified Gaussian type dispersion model adequately estimated the downwind 1 −h average gas concentrations within the maximum impact area. When this model was used to estimate 24-h average concentrations, measured levels were underestimated. The model does not take sufficient account of flows due to mountain/valley and land-/sea-breeze effects. For the cases investigated, the tracer data were used directly in a simple proportionality model to estimate pollution concentrations released from the smelter. During complex situations with thermal upslope winds or return flows, even crude modelling of these flow patterns would improve available dispersion model estimates considerably.
A tracer study of pollutant transport in a deep, Fjord valley
Abstract Tracer experiments with SF6 were conducted to study the transport and dispersion of gases released from an aluminium smelter in a complex fjord valley area of western Norway. Continuous records of meteorological parameters were used to estimate the vertical and horizontal dispersion within the maximum impact area downwind from the smelter hall. With along valley winds, turbulence seemed to depend upon surface roughness, vertical wind and temperature profiles in much the same way as in open terrain. Simple continuity calculations using a modified Gaussian type dispersion model adequately estimated the downwind 1 −h average gas concentrations within the maximum impact area. When this model was used to estimate 24-h average concentrations, measured levels were underestimated. The model does not take sufficient account of flows due to mountain/valley and land-/sea-breeze effects. For the cases investigated, the tracer data were used directly in a simple proportionality model to estimate pollution concentrations released from the smelter. During complex situations with thermal upslope winds or return flows, even crude modelling of these flow patterns would improve available dispersion model estimates considerably.
A tracer study of pollutant transport in a deep, Fjord valley
Sivertsen, B. (author) / Lamb, B. (author) / Grønskei, K.E. (author)
Atmospheric Environment ; 17 ; 1915-1922
1982-10-21
8 pages
Article (Journal)
Electronic Resource
English
Online Contents | 2012
Online Contents | 2001
Trinkwassernetz im Fjord saniert
| British Library Online Contents | 2002