A statistical evaluation and comparison of coastal point source Dispersion Models

Boundary-layer heights over the monsoon trough region during active and break phases

“…Spatial variation of the mean daytime boundary-layer heights during the active and break phases of the monsoon at various stations in the monsoon trough region are shown in Figure 6. Again, shallow boundary layers occur during the active phase and deeper ones during the break phase except near the coast where they tend to be lower, possibly due to the development of thermal internal boundary layers (Stunder and Raman, 1986). There is a tendency for the PBL heights to increase inland closer to the heat low generally situated over the western region of the Indian subcontinent (around 20-30"N, 65-75 "E).…”

Modelling of Emissions of Total Volatile Organic Compounds in an Australian House

“…The index of agreement (d) suggests that the percentage of the potential for error in predicting concentrations has been explained by the model [38]. For the five products noted in tables 2 and 3, the d values range from 0.922 to 0.999.…”

“…The value of RMSE should be minimised so that the model is predicting at peak accuracy. A large value of RMSEu may indicate that the model is as good as possible under the present conditions [38].…”

“…In addition to RMSEs, RMSEu and d, calculation of summary measures such as C m , C p , S m 2 and S p 2 along with simple linear regression will be of use [38]. Here, S m 2 and S p 2 are squared standard deviations for measured values and for predicted values, respectively.…”

“…The correlation between chamber measurements and emission modelling results, and the field measurements and the corresponding modelled results, was statistically evaluated by using techniques outlined by Stunder and Sethu Raman [38] and Hanna [39]. These techniques included both residual analysis which allows a quantitative estimate of (C p -C m ) and correlation which allows a measure of agreement between measured TVOC concentration (C m ) and predicted concentration (C p ).…”