Abstract
High-resolution global non-hydrostatic gridded dynamic models have drawn significant attention in recent years in conjunction with the rising demand for improving weather forecasting and climate predictions. By far it is still challenging to build a high-resolution gridded global model, which is required to meet numerical accuracy, dispersion relation, conservation, and computation requirements. Among these requirements, this review focuses on one significant topic—the numerical accuracy over the entire non-uniform spherical grids. The paper discusses all the topic-related challenges by comparing the schemes adopted in well-known finite-volume-based operational or research dynamical cores. It provides an overview of how these challenges are met in a summary table. The analysis and validation in this review are based on the shallow-water equation system. The conclusions can be applied to more complicated models. These challenges should be critical research topics in the future development of finite-volume global models.
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Supported by the National Key Research and Development Program of China (2017YFC1502201) and Basic Scientific Research and Operation Fund of Chinese Academy of Meteorological Sciences (2017Z017).
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Xie, Y., Qin, Z. Challenges in Developing Finite-Volume Global Weather and Climate Models with Focus on Numerical Accuracy. J Meteorol Res 35, 775–788 (2021). https://doi.org/10.1007/s13351-021-0202-3
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DOI: https://doi.org/10.1007/s13351-021-0202-3