Articles | Volume 8, issue 1
Methods for assessment of models
23 Jan 2015
Methods for assessment of models |  | 23 Jan 2015

The impact of periodization methods on the kinetic energy spectra for limited-area numerical weather prediction models

V. Blažica, N. Gustafsson, and N. Žagar

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Cited articles

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Short summary
The paper deals with the comparison of the common periodization methods used to obtain spectral fields of limited-area models for numerical weather prediction. The focus is on the impact the methods have on the spectra of the fields. The results show that detrending and DCT have little impact on the spectra, as does the Boyd method for extension zone. For the ALADIN and HIRLAM methods, the impact depends on the width of the extension zone - the wider the zone, the larger impact on the spectra.