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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 6
Geosci. Model Dev., 8, 1645–1658, 2015
https://doi.org/10.5194/gmd-8-1645-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Australian Community Climate and Earth System Simulator:...

Geosci. Model Dev., 8, 1645–1658, 2015
https://doi.org/10.5194/gmd-8-1645-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Development and technical paper 03 Jun 2015

Development and technical paper | 03 Jun 2015

A spectral nudging method for the ACCESS1.3 atmospheric model

P. Uhe and M. Thatcher
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Denis, B., Coté, J., and Laprise, R.: Spectral decomposition of two-dimensional atmospheric fields on limited-area domains using the discrete cosine transform (DCT), Mon. Weather Rev., 130, 1812–1829, 2002.
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We describe a spectral nudging technique to constrain the large spatial structures of an atmospheric general circulation model (ACCESS1.3) towards an observational product (ERA-Interim). This has a number of applications for model development and scientific studies. This paper shows potential benefits of using the spectral nudging over the traditional Newtonian relaxation method.
We describe a spectral nudging technique to constrain the large spatial structures of an...
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