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High-resolution climate simulations are presented for January and July over the Australian region using a limited-area model nested within a GCM. One new aspect of these simulations is that the model domain extends to tropical regions both north and south of the equator. Objective measures of skill are used to assess the quality of the model simulations, and the performance of the model is verified over various subregions of the model domain. Poleward of tropical regions, the nested model climatologies produced are generally superior to those produced by the GCM, and compare reasonably well to observations over the Australian continent at the regional scale; in particular the simulations of precipitation and screen temperature are improved.
Walsh et al. (Sun,) studied this question.