A Total Energy Error Analysis of Dynamical Cores and Physics‐Dynamics Coupling in the Community Atmosphere Model (CAM)

Journal of Advances in Modeling Earth Systems

Peter H. Lauritzen¹  David L. Williamson¹ 

[1] National Center for Atmospheric Research Boulder CO USA;

关键词: total energy errors;    physics‐dynamics coupling;    global modeling;    numerical methods;    dynamical cores;   

DOI  :  10.1029/2018MS001549

来源: DOAJ

【 摘 要 】

Abstract A closed total energy (TE) budget is of utmost importance in coupled climate system modeling; in particular, the dynamical core or physics‐dynamics coupling should ideally not lead to spurious TE sources/sinks. To assess this in a global climate model, a detailed analysis of the spurious sources/sinks of TE in National Center for Atmospheric Research's Community Atmosphere Model (CAM) is given. This includes spurious sources/sinks associated with the parameterization suite, the dynamical core, TE definition discrepancies, and physics‐dynamics coupling. The latter leads to a detailed discussion of the pros and cons of various physics‐dynamics coupling methods commonly used in climate/weather modeling.

【 授权许可】

Unknown