NDLI: Theoretical aspect of suitable spatial boundary condition specified for adjoint model on limited area

Content Provider	Springer Nature Link
Author	Yuan, Wang Rongsheng, Wu
Copyright Year	2001
Abstract	Theoretical argumentation for so-called suitable spatial condition is conducted by the aid of homotopy framework to demonstrate that the proposed boundary condition does guarantee that the over-specification boundary condition resulting from an adjoint model on a limited-area is no longer an issue, and yet preserve its well-poseness and optimal character in the boundary setting. The ill-poseness of over-specified spatial boundary condition is in a sense, inevitable from an adjoint model since data assimilation processes have to adapt prescribed observations that used to be over-specified at the spatial boundaries of the modeling domain.In the view of pragmatic implement, the theoretical framework of our proposed condition for spatial boundaries indeed can be reduced to the hybrid formulation of nudging filter, radiation condition taking account of ambient forcing, together with Dirichlet kind of compatible boundary condition to the observations prescribed in data assimilation procedure. All of these treatments, no doubt, are very familiar to mesoscale modelers.
Starting Page	1081
Ending Page	1089
Page Count	9
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	18
Issue Number	6
e-ISSN	18619533
Language	English
Publisher	Science Press
Publisher Date	2001-01-01
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Variational data assimilation Adjoint model Over-specified partial boundary condition Meteorology/Climatology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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