Articles | Volume 8, issue 6
Geosci. Model Dev., 8, 1645–1658, 2015

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

Geosci. Model Dev., 8, 1645–1658, 2015

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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Cited articles

Davies, T., Cullen, M. J. P., Malcolm, A. J., Mawson, M. H., Staniforth, A., White, A. A., and Wood, N.: A new dynamical core for the Met Office's global and regional modelling of the atmosphere, Q. J. Roy. Meteorol. Soc., 131, 1759–1782,, 2005.
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.
Short summary
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.