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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. [ABSTRACT FROM AUTHOR]

The business community has been frequently criticized for its lack of engagement with climate change, not just in terms of mitigation but increasingly also in terms of adaptation. One reason why executives may not take more decisive action on adaptation is the type of information they rely on for decision-making purposes. From this perspective, executives who engage more with scientific information sources for decision-making purposes would be likely to have a more comprehensive understanding of climate change, and would consequently be more concerned about their company's vulnerability and adaptation needs. So far, however, there is limited evidence showing that executives' lack of engagement with scientific information influences their perception that climate change is a serious issue. In this paper, we use survey data collected from 125 executives across the top 500 companies on the Australian Stock Exchange (ASX-500) to examine the links between how executives obtain information on climate change and their perceived need for adaptation action. Findings show that executives who report greater engagement with scientific information express greater concern about their company's vulnerability, which also translates into a greater perceived need for adaptation action. Making scientific information accessible to executives is therefore important for communicating climate science to a business audience. [ABSTRACT FROM AUTHOR]