Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
The impact of periodization methods on the kinetic energy spectra for limited-area numerical weather prediction models
SMHI, Forskningsavdelningen, Meteorologi.ORCID-id: 0000-0001-8376-2729
2015 (Engelska)Ingår i: Geoscientific Model Development, ISSN 1991-959X, E-ISSN 1991-9603, Vol. 8, nr 1, s. 87-97Artikel i tidskrift (Refereegranskat) Published
Resurstyp
Text
Abstract [en]

The paper deals with the comparison of the most common periodization methods used to obtain spectral fields of limited-area models for numerical weather prediction. The focus is on the impact that the methods have on the spectra of the fields, which are used for verification and tuning of the models. A simplified model is applied with random fields that obey a known kinetic energy spectrum. The periodization methods under consideration are detrending, the discrete cosine transform and the application of an extension zone. For the extension zone, three versions are applied: the Boyd method, the ALADIN method and the HIRLAM method. The results show that detrending and the discrete cosine transform 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 more artificial energy and the larger impact on the spectra. The width of the extension zone correlates to the modifications in the shape of the spectra as well as to the amplitudes of the additional energy in the spectra.

Ort, förlag, år, upplaga, sidor
2015. Vol. 8, nr 1, s. 87-97
Nationell ämneskategori
Meteorologi och atmosfärforskning
Forskningsämne
Meteorologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-2014DOI: 10.5194/gmd-8-87-2015ISI: 000348978400006OAI: oai:DiVA.org:smhi-2014DiVA, id: diva2:917285
Tillgänglig från: 2016-04-06 Skapad: 2016-03-03 Senast uppdaterad: 2017-11-30Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Gustafsson, Nils

Sök vidare i DiVA

Av författaren/redaktören
Gustafsson, Nils
Av organisationen
Meteorologi
I samma tidskrift
Geoscientific Model Development
Meteorologi och atmosfärforskning

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 186 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.7
|