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Data assimilation for high-resolution limited-area models
SMHI, Forskningsavdelningen, Meteorologi.ORCID-id: 0000-0001-8376-2729
1997 (engelsk)Inngår i: Journal of the Meteorological Society of Japan, ISSN 0026-1165, Vol. 75, nr 1B, s. 367-382Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The present status of development of data assimilation techniques for high resolution limited area models is reviewed and various candidates for a new generation of a data assimilation system are compared. It is concluded that data assimilation based on 3-dimensional or 4-dimensional variational techniques is the most promising approach. Further investigations are needed, however, to find out whether variational data assimilation is feasible over "limited" model integration areas or whether global/hemispheric model integration areas have to be introduced for high resolution limited area data assimilation purposes. The main problem in this connection is the rapid propagation of forecast errors on a global or at least hemispheric atmospheric scale within a time-scale of a few days.

sted, utgiver, år, opplag, sider
1997. Vol. 75, nr 1B, s. 367-382
HSV kategori
Forskningsprogram
Meteorologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-1564ISI: A1997XG47600019OAI: oai:DiVA.org:smhi-1564DiVA, id: diva2:850698
Konferanse
2nd WMO International Symposium on Assimilation of Observations in Meteorology and Oceanography, MAR 13-17, 1995, TOKYO, JAPAN
Tilgjengelig fra: 2015-09-02 Laget: 2015-08-31 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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