标题：Held‐Suarez simulations with the Community Atmosphere Model Spectral Element (CAM‐SE) dynamical core: A global axial angular momentum analysis using Eulerian and floating Lagrangian vertical coordinates
期刊名称：Journal of Advances in Modeling Earth Systems
电子版ISSN：1942-2466
出版年度：2014
卷号：6
期号：1
页码：1-12
DOI：10.1002/2013MS000268
出版社：John Wiley & Sons, Ltd.
摘要：In this paper, an analysis of the global AAM conservation properties of NCAR's Community Atmosphere Model Spectral Element (CAM‐SE) dynamical core under Held‐Suarez forcing is presented. It is shown that the spurious sources/sinks of AAM in CAM‐SE are 3 orders of magnitude smaller than the parameterized (physical) sources/sinks. The effect on AAM conservation by changing various numerical aspects of the dynamical core (e.g., different vertical coordinates, reduced formal order of accuracy, increased dissipation, and decreased divergence damping) is investigated. In particular, it is noted that changing from Eulerian (hybrid‐sigma) to floating Lagrangian vertical coordinates does not alter the global AAM conservation properties of CAM‐SE.
