## 4 Experiments
### Results
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Site/Metrics**} & **Hourly RMSE, MSB** & **Daily Maximum** & **Daily Minimum** & **Percentage of Critical** \\  & **(Change from** & **RMSE,** & **RMSE,** & **Error,** \\  & **IMPROVER)/\({}^{\circ}\)C** & **MSB (Change from** & **MSB (Change from** & **MSB (Change from** & **IMPROVER)/\%** \\  & & **IMPROVER)/\({}^{\circ}\)C** & **IMPROVER)/\({}^{\circ}\)C** & **IMPROVER)/\%** \\ \hline Alice Springs Airport & 2.36 (\(-\)0.38) & 2.14 (\(-\)0.13) & 2.11 (\(-\)0.64) & 32.94\% (\(-\)8.98\%) \\ Archerfield Airport & 1.37 (\(-\)0.23) & 1.51 (\(-\)0.71) & 1.39 (\(-\)0.43) & 12.39\% (\(-\)6.59\%) \\ Avalon Airport & 1.92 (\(-\)0.07) & 2.11 (\(-\)0.14) & 1.77 (\(-\)0.34) & 23.50\% (\(-\)1.31\%) \\ Coffs Harbour Airport & 1.51 (\(-\)0.26) & 1.35 (\(-\)0.46) & 1.55 (\(-\)0.78) & 16.64\% (\(-\)5.46\%) \\ Curtin Aero & 1.79 (\(-\)0.13) & 1.67 (\(-\)0.33) & 1.33 (\(-\)0.24) & 20.60\% (\(-\)2.73\%) \\ Geraldton Airport & 2.09 (\(-\)0.60) & 2.22 (\(-\)0.68) & 2.09 (\(-\)0.87) & 29.67\% (\(-\)13.45\%) \\ Hobart (Ellerslie Road) & 1.64 (\(-\)0.12) & 1.95 (\(-\)0.37) & 1.34 (\(-\)0.06) & 19.53\% (\(-\)3.30\%) \\ Mount Isa & 2.19 (\(-\)0.21) & 1.96 (\(-\)0.25) & 2.00 (\(-\)0.56) & 31.95\% (\(-\)2.63\%) \\ Tindal RAAF & 1.82 (\(-\)0.16) & 1.57 (\(-\)0.14) & 1.38 (\(-\)0.15) & 22.70\% (\(-\)5.34\%) \\ Townsville & 1.13 (\(-\)0.20) & 0.99 (\(-\)0.60) & 1.15 (\(-\)0.04) & 7.44\% (\(-\)4.39\%) \\ Woomera Aerodrome & 1.93 (\(-\)0.11) & 1.83 (\(-\)0.04) & 1.75 (+0.07) & 21.44\% (\(-\)4.28\%) \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Metrics of each site, calculated on all lead days, temperature forecast. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Site/Metrics**} & **Hourly RMSE, MSB** & **Daily Maximum** & **Daily Minimum** & **Percentage of Critical** \\  & **(Change from** & **RMSE,** & **RMSE,** & **Error,** \\  & **(Change from** & **MSB (Change from** & **MSB (Change from** & **MSB (Change from** & **IMPROVER)/\%** \\  & **IMPROVER)/\({}^{\circ}\)C** & **IMPROVER)/\({}^{\circ}\)C** & **IMPROVER)/\%** \\ \hline Alice Springs Airport & 2.67 (\(-\)0.46) & 2.40 (\(-\)0.88) & 2.66 (\(-\)0.30) & 38.55\% (\(-\)7.40\%) \\ Archerfield Airport & 1.73 (\(-\)0.41) & 1.46 (\(+\)0.13) & 2.02 (\(-\)1.29) & 17.25\% (\(-\)7.96\%) \\ Avalon Airport & 1.64 (\(-\)0.01) & 1.51 (\(-\)0.35) & 1.75 (\(-\)0.18) & 19.00\% (\(-\)1.65\%) \\ Coffs Harbour Airport & 1.43 (\(-\)0.16) & 1.36 (\(-\)0.19) & 1.82 (\(-\)0.34) & 11.99\% (\(-\)2.11\%) \\ Curtin Aero & 1.99 (\(-\)0.02) & 1.69 (\(-\)0.10) & 2.14 (\(-\)0.12) & 23.63\% (\(-\)0.85\%) \\ Geraldton Airport & 2.39 (\(-\)1.05) & 1.63 (\(-\)2.26) & 2.47 (\(-\)0.27) & 31.16\% (\(-\)22.45\%) \\ Hobart (Ellerslie Road) & 1.80 (\(-\)0.09) & 1.79 (\(+\)0.05) & 2.01 (\(-\)0.49) & 21.38\% (\(-\)3.47\%) \\ Mount Isa & 2.68 (\(-\)0.53) & 2.38 (\(-\)0.12) & 2.75 (\(-\)1.16) & 38.16\% (\(-\)5.78\%) \\ Thadal RAAF & 1.55 (\(-\)0.12) & 1.27 (\(-\)0.06) & 1.83 (\(-\)0.49) & 14.73\% (\(-\)2.17\%) \\ Townsville & 1.34 (\(-\)0.29) & 1.10 (\(-\)0.80) & 2.01 (\(-\)0.11) & 9.24\% (\(-\)6.57\%) \\ Woomera Aerodrome & 2.49 (\(-\)0.35) & 2.17 (\(-\)0.11) & 2.30 (\(-\)1.07) & 34.54\% (\(-\)7.15\%) \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Metrics of each site, calculated on all lead days, dew point temperature forecast. And for Curtin Aero, the MSB predictions are worse than the input IMPROVER data, as the RMSE of MSB predictions is 6.46% higher than that of IMPROVER. Averaging on all sites and all lead days, MSB has an average reduction of hourly RMSE by 11.35% for temperature and 12.28% for dew point. Critical error is reduced by 5.60% for temperature and 6.19% for dew point. The improvement in RMSE and the percentage of reduction in temperature is comparable to post-processing studies using non-ML methods such as ([PERSON] et al., 2020; [PERSON] et al., 2020). The variation of ML skills on various site locations highlights the importance of localised model training and tuning.