Kala, Jatin

Andrys, Julia

Lyons, Tom J

Foster, Ian J

Evans, Brad J

2015-02

<p>Regional climate models are sensitive to the forcing data used, as well as different model physics options. Additionally, the behaviour of physics parameterisations may vary depending on the location of the domain due to different climatic regimes. In this study, we carry out a sensitivity analysis of the weather research and forecasting model to different driving data and model physics options over a 10-km resolution domain in the southwest of Western Australia, a region with Mediterranean climate. Simulations are carried out on a seasonal time-scale, in order to better inform future long-term regional climate simulations for this region. We show that the choice of radiation scheme had a strong influence on both temperature and precipitation; the choice of planetary boundary layer scheme has a particularly large influence on minimum temperatures; and, the choice of cumulus scheme or more complex micro-physics did not strongly influence precipitation simulations. More importantly, we show that the same radiation scheme, when used with different driving data, can lead to different results.</p>

Climate Dynamics, 44(3-4), p. 633-659

1432-0894

0930-7575

https://hdl.handle.net/1959.11/58878

Springer

Sensitivity of WRF to driving data and physics options on a seasonal time-scale for the southwest of Western Australia

Journal Article

Publication