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arXiv · 1405.7447

Horizontal resolution in a nested-domain WRF simulation: a Bayesian analysis approach

Michel d. S. Mesquita·Bjørn Ådlandsvik·Cindy Bruyère·Anne D. Sandvik
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Abstract

The fast-paced development of state-of-the-art limited area models and faster computational resources have made it possible to create simulations at increasing horizontal resolution. This has led to a ubiquitous demand for even higher resolutions from users of various disciplines. This study revisits one of the simulations used in marine ecosystem projects at the Bjerknes Centre. We present a fresh perspective on the assessment of these data, related more specifically to: a) the value added by increased horizontal resolution; and b) a new method for comparing sensitivity studies. The assessment is made using a Bayesian framework for the distribution of mean surface temperature in the Hardanger fjord region in Norway. Population estimates are calculated based on samples from the joint posterior distribution generated using a Monte Carlo procedure. The Bayesian statistical model is applied to output data from the Weather Research and Forecasting (WRF) model at three horizontal resolutions (9, 3 and 1 km) and the ERA Interim Reanalysis. The period considered in this study is from 2007 to 2009, for the months of April, May and June.

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Michel d. S. Mesquita, Bjørn Ådlandsvik, Cindy Bruyère, Anne D. Sandvik. 2014-05-29. Horizontal resolution in a nested-domain WRF simulation: a Bayesian analysis approach. https://arxiv.org/abs/1405.7447

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