Journal article
Influence of bias-correcting global climate models for regional climate simulations over the CORDEX-Australasia domain using WRF
Theoretical and Applied Climatology, Vol.142, pp.1493-1513
2020
Abstract
Regional climate models (RCMs) are used to dynamically downscale global climate models (GCMs) to provide high-resolution projections of future climate change to better inform policy and decision making at the regional scale. However, biases from GCMs are transferred to RCMs and this can limit the usefulness of the regional climate projections. This paper investigates the influence of bias correcting 4 GCMs from the Coupled Model Intercomparison Project 3, for regional climate simulations over the CORDEX-Australasia domain using Weather Research and Forecasting. The GCM outputs are bias corrected against ERA-Interim reanalysis as a surrogate truth. Results show that over decadal time scales bias correction removes large systematic precipitation and temperature biases. However, bias correction also introduced biases where there were none, introduced biases of the opposite sign, or enhanced existing biases in other regions in some instances. The dynamical mechanisms driving the changes in the biases are explored.
Details
- Title
- Influence of bias-correcting global climate models for regional climate simulations over the CORDEX-Australasia domain using WRF
- Authors/Creators
- K. Wamahiu (Author/Creator) - Murdoch UniversityJ. Kala (Author/Creator) - Murdoch UniversityJ. Andrys (Author/Creator) - Murdoch University
- Publication Details
- Theoretical and Applied Climatology, Vol.142, pp.1493-1513
- Publisher
- Springer Verlag
- Identifiers
- 991005544808407891
- Copyright
- © 2020 Springer Nature Switzerland AG.
- Murdoch Affiliation
- School of Environmental and Conservation Sciences; Harry Butler Institute
- Language
- English
- Resource Type
- Journal article
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- 8 Earth Sciences
- 8.19 Oceanography, Meteorology & Atmospheric Sciences
- 8.19.7 Hydroclimatic Modeling
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