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contributor authorRamamurthy, Mohan K.
contributor authorNavon, I. M.
date accessioned2017-06-09T16:08:59Z
date available2017-06-09T16:08:59Z
date copyright1992/10/01
date issued1992
identifier issn0027-0644
identifier otherams-62033.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4202881
description abstractA conjugate-gradient variational blending technique, based on the method of direct minimization, has been developed and applied to the problem of initialization in a limited-area model in the summer monsoon region. The aim is to blend gridded winds from a high-resolution limited-area analysis with a lower-resolution global analysis for use in a limited-area model that uses the, global analyst for boundary conditions. The ability of the variational matching approach in successfully blending meteorological analyses of varying resolutions is demonstrated. Reasonable agreement is found between the blended analyses and the imposed weak constraints, together with an adequate rate of convergence in the unconstrained minimization procedure. The technique is tested on the 1979 onset vortex vortex case using data from the FGGE Summer MONEX campaign. The results indicate that the forecasts made from the variationally matched analyses show positive impact and perform better than those from the unblended analyses.
publisherAmerican Meteorological Society
titleThe Conjugate-Gradient Variational Analysis and Initialization Method: An Application to MONEX SOP 2 Data
typeJournal Paper
journal volume120
journal issue10
journal titleMonthly Weather Review
identifier doi10.1175/1520-0493(1992)120<2360:TCGVAA>2.0.CO;2
journal fristpage2360
journal lastpage2377
treeMonthly Weather Review:;1992:;volume( 120 ):;issue: 010
contenttypeFulltext


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