Appendix 6. Odour Buffer Assessment [As Published] · 132007.2399

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              Odour Buffer Assessment
              StarCo Developments


TAPM solves the fundamental fluid dynamics and scalar transport equations to predict meteorology
and (optionally) pollutant concentrations. It consists of coupled prognostic meteorological and air
pollution concentration components. The model predicts airflow important to local scale air
pollution dispersion, such as sea breezes and terrain induced flows, against a background of larger
scale meteorology provided by synoptic analyses.

Upper air data were generated over the study region using TAPM. The TAPM-generated data and
observed meteorological data were entered into the CALMET diagnostic meteorological model,
which is discussed below.

TAPM is also capable of extracting a two dimensional meteorological data set for use in AUSPLUME
modelling.



4.4 CALMET

CALMET is a meteorological pre-processor that includes a wind field generator containing objective
analysis and parameterised treatments of slope flows, terrain effects and terrain blocking effects.
The pre-processor produces fields of wind components, air temperature, relative humidity, mixing
height and other micro-meteorological variables to produce the three-dimensional meteorological
fields that are utilised in the CALPUFF dispersion model.

The hourly TAPM-generated data for the period of analysis, from January 2003 to December 2003,
were used as input to the CALMET pre-processor together with observation data from the Bureau of
Meteorology site at Tewantin to create a fine resolution, three-dimensional meteorological field for
input into the dispersion model.

CALMET uses the meteorological inputs in combination with land use and geophysical information
(input at a 50 m resolution) for the modelling domain to predict gridded meteorological fields for
the region. Figure 4.2 shows an example of the non-steady-state wind fields predicted by CALMET.




1898a report final.doc                                                   PAE Job Number 1898a