Details

Autor(en) / Beteiligte

• Pilinis, Christodoulos

Titel

Numerical simulation of visibility degradation due to particulate matter: Model development and evaluation

Ist Teil von

• Journal of Geophysical Research, Wash., D.C, 1989-07, Vol.94 (D7), p.9937-9946

Ort / Verlag

Blackwell Publishing Ltd

Erscheinungsjahr

1989

Link zum Volltext

Beschreibungen/Notizen

• The model presented predicts visibility degradation due to aerosol, using thermodynamic equilibrium calculations and Mie theory. Observed scattering coefficients bsca at Mead View, Nevada, are successfully predicted. The model is used to examine the dependence of bsca on certain changes in the ambient sulfate concentrations, as well as the sensitivity of bsca to the ambient relative humidity. The model predicts that aerosol water plays an important role in the visibility degradation at relative humidities higher than the deliquescent point of the aerosol particles. We have also shown that reduction in the ambient sulfate levels does not necessarily result in improvements in the ambient visibility, unless it is accompanied by reductions in the ambient nitrate concentrations.