Attachment 6 - Odour Impact Assessment - Katestone · 132005.638.06

                                          N

                                           (P − O )
                                                   i      i
                                                              2


         IOA = 1 − N                      i =1


                        (| P − O
                         i =1
                                  i        m ean   | + | Oi − Om ean |) 2

         where N is the number of observations, Pi are the hourly model predictions, Oi are the hourly observations
         and Omean is the observed observation mean.

The probability density functions illustrate good agreement between predicted and observed meteorological data,
which is to be expected given the assimilation of data at the Tewantin monitoring station. The wind speeds and
temperatures generated by TAPM are within the benchmark ranges for Bias, RMSE and index of agreement for
the BoM Tewantin monitoring station.

The results of the validation showed that the model generally performed well at simulating the meteorology across
the region, with assimilation of the BoM Tewantin observational data significantly improving the model’s predictions.




Figure A4     Probability density functions comparing 2020 observational data (blue) with TAPM data
              (red) at the location of the BoM Tewantin monitoring station

Table A1      A comparison of the observational meteorological data with the TAPM output for 2020
              at the location of the BoM Tewantin monitoring station

                                                 Wind speed                                    Temperature
              “Good”
 Statistic                                             Observational                             Observational
               value            Benchmark                                   TAPM   Benchmark                        TAPM
                                                           data                                      data
 Mean             -                   -                       2.6            2.6       -             21.1           21.0
 SD               -                   -                       1.6            1.4       -              4.6            3.9
 Min              -                   -                       0.0            0.0       -              5.7            8.7
 Max              -                   -                       8.6            7.6       -             34.1           33.7
 Bias             0             <±0.5 m/s                           -0.02          <±0.5 m/s                -0.11
              Close to
 RMSE                            < 2 m/s                            0.73               -                    1.87
                 0


 Katestone Environmental Australia Pty Ltd                                                            17 September 2026
 D25072-8 Noosa Council - Noosa Composting Odour Assessment - Final                                            Page 29