Energy considerations in the Community Atmosphere Model (CAM)
Energy considerations in the Community Atmosphere Model (CAM)
复制标题
社区氛围模型 (CAM) 中的能源考虑因素
DOI：
10.1002/2015ms000448
复制
发表时间：
2015
影响因子：
6.8
通讯作者：
V. Yudin
中科院分区：
文献类型：
--
作者：
D. Williamson;J. Olson;C. Hannay;T. Toniazzo;M. Taylor;V. Yudin
社区大气模式（CAM）中的能量公式中的错误被识别和纠正。十年AMIP模拟使用正确和不正确的能量配方进行比较。选定的主要变量的统计数据都表明模拟之间的物理差异不显著，与用舍入大小的扰动初始化的模拟的差异相当。这两个模拟是如此相似，主要是因为不正确的能量公式在原始CAM中的应用不一致。CAM使用错误的能量形式来确定参数化之间传递的状态，但使用与从参数化传递到动态核心的状态的正确公式相关的形式。如果也使用不正确的形式来确定传递到动态核心的状态，则模拟会显着不同。此外，CAM使用了不正确的形式作为全局能量修正器，但这似乎不太重要。使用正确和不正确的能量定义的固定器的大小的差异是非常小的。
An error in the energy formulation in the Community Atmosphere Model (CAM) is identified and corrected. Ten year AMIP simulations are compared using the correct and incorrect energy formulations. Statistics of selected primary variables all indicate physically insignificant differences between the simulations, comparable to differences with simulations initialized with rounding sized perturbations. The two simulations are so similar mainly because of an inconsistency in the application of the incorrect energy formulation in the original CAM. CAM used the erroneous energy form to determine the states passed between the parameterizations, but used a form related to the correct formulation for the state passed from the parameterizations to the dynamical core. If the incorrect form is also used to determine the state passed to the dynamical core the simulations are significantly different. In addition, CAM uses the incorrect form for the global energy fixer, but that seems to be less important. The difference of the magnitude of the fixers using the correct and incorrect energy definitions is very small.