Regional Climate Model Biases, Their Dependence on Synoptic Circulation Biases and the Potential for Bias Adjustment: A Process‐Oriented Evaluation of the Austrian Regional Climate Projections
نویسندگان
چکیده
The Austrian regional climate projections are based on an ensemble of bias adjusted model simulations. Bias adjustment (BA) improves the usability for impact studies, but cannot mitigate fundamental errors. This argument holds in particular biases temporal dependence, which is strongly influenced by large-scale circulation. Global models (GCMs), underlying projections, suffer from substantial circulation We therefore, conduct a process-based evaluation focusing errors, their imprints and potential BA. First, we define nine synoptic weather types assess how well considered represent occurrence persistence. Second, overall dry hot day probabilities, as conditional type occurrence; duration spells. Third, investigate these depend persistence relevant types. And fourth, study much BA biases. Many GCMs misrepresent These have clear imprint spell durations. many cases helps to greatly reduce even presence biases, may some amplify Persistence especially representation meteorological drought. Biases spells fully be mitigated
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Atmospheres
سال: 2021
ISSN: ['2169-8996', '2169-897X']
DOI: https://doi.org/10.1029/2020jd032824