Sensitivity analysis of a livestock odour dispersion model (LODM) to input parameters, Part 2: Meteorological parameters.

Abstract

The sensitivity of a livestock odour dispersion model (LODM) to its input meteorological parameters with respect to its output odour concentration and odour frequency was analyzed. Results showed that the effects of meteorological parameters on downwind odour concentrations and odour frequencies were different. The sensitivity of wind speed was from medium to high to odour concentration and low to high to odour frequency under different stability conditions. The wind direction and stability class had high sensitivity on both odour concentration and odour frequency. The sensitivity of ambient temperature was medium to model predicted odour concentration and low to medium to odour frequency. The sensitivity of mixing height is low while it is indifferent of solar radiation and cloud cover. The meteorological parameters in an order of decreasing importance would appear to be stability class, wind direction, wind speed, ambient temperature, cloud cover, mixing height, and radiation.