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Sensitivity experiments with the spectral HIRLAM and its adjoint
SMHI, Research Department, Meteorology.ORCID iD: 0000-0001-8376-2729
1996 (English)In: Tellus. Series A, Dynamic meteorology and oceanography, ISSN 0280-6495, E-ISSN 1600-0870, Vol. 48, no 4, 501-517 p.Article in journal (Refereed) PublishedText
Abstract [en]

The tangent-linear and the adjoint of the spectral High Resolution Limited Area Model (HIRLAM) have been derived as a first step in the development of a 4-dimensional variational data assimilation system for HIRLAM. The adjoint of the spectral HIRLAM was applied successfully to test the sensitivity of short-range forecast errors to initial conditions. These sensitivity experiments were carried out for a particular case study in addition to a full 5-day period. The results of the sensitivity experiments indicate an ability of the adjoint model to improve the assimilation of baroclinically developing systems and this may open possibilities for application of the adjoint model in a ''Poor mans 4-dimensional variational data assimilation'' in advance of the implementation of the full 4-dimensional variational data assimilation.

Place, publisher, year, edition, pages
DANISH METEOROL INST,DK-2100 COPENHAGEN O,DENMARK., 1996. Vol. 48, no 4, 501-517 p.
National Category
Meteorology and Atmospheric Sciences
Research subject
URN: urn:nbn:se:smhi:diva-1636DOI: 10.1034/j.1600-0870.1996.t01-3-00002.xISI: A1996VD10700002OAI: diva2:897626
Available from: 2016-01-26 Created: 2015-12-22 Last updated: 2016-05-30

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