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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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GMD | Articles | Volume 13, issue 2
Geosci. Model Dev., 13, 685–705, 2020
https://doi.org/10.5194/gmd-13-685-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: The Norwegian Earth System Model: NorESM; basic development,...

Geosci. Model Dev., 13, 685–705, 2020
https://doi.org/10.5194/gmd-13-685-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Development and technical paper 21 Feb 2020

Development and technical paper | 21 Feb 2020

Enforcing conservation of axial angular momentum in the atmospheric general circulation model CAM6

Thomas Toniazzo et al.

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Latest update: 24 Sep 2020
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Short summary
We show that ensuring global conservation of the angular (rotational) momentum (AM) of the atmosphere along the Earth's axis of rotation, which is a property of the governing equations, has important and beneficial consequences for the quality of the numerical simulation of the general circulation of the atmosphere. We discuss the causes of non-conservation in the FV dynamical core of the Community Atmosphere Model (CAM), propose remedies, and show their impact in correcting systematic biases.
We show that ensuring global conservation of the angular (rotational) momentum (AM) of the...
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