Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박선기 | * |
dc.date.accessioned | 2016-08-27T02:08:55Z | - |
dc.date.available | 2016-08-27T02:08:55Z | - |
dc.date.issued | 2004 | * |
dc.identifier.issn | 0094-8276 | * |
dc.identifier.other | OAK-1852 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/215639 | - |
dc.description.abstract | [1] In this study, the performance of inverse three-dimensional variational assimilation (I3D-Var) is investigated in terms of dissipation process for an advection-diffusion problem. The performance of I3D-Var becomes poorer with larger diffusion coefficients. However, even for strong dissipation, the cost function during early iterations in the I3D-Var decreases still much faster than it does in the standard four-dimensional variational assimilation (4D-Var). Based on this observation a hybrid approach that combines the I3D-Var and the 4D-Var is suggested to accelerate the performance of 4D-Var. Application of this hybrid method demonstrates that the I3D-Var can serve as a preconditioner for carrying minimization in the full 4D-Var framework. Using the initial conditions obtained through the I3D-Var, the 4D-Var showed much faster convergence in minimizing the cost function. | * |
dc.language | English | * |
dc.publisher | AMER GEOPHYSICAL UNION | * |
dc.title | Inverse three-dimensional variational data assimilation for an advection-diffusion problem: Impact of diffusion and hybrid application | * |
dc.type | Article | * |
dc.relation.issue | 4 | * |
dc.relation.volume | 31 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | GEOPHYSICAL RESEARCH LETTERS | * |
dc.identifier.doi | 10.1029/2003GL018830 | * |
dc.identifier.wosid | WOS:000189372900002 | * |
dc.identifier.scopusid | 2-s2.0-2542440581 | * |
dc.author.google | Park, SK | * |
dc.author.google | Kalnay, E | * |
dc.contributor.scopusid | 박선기(7501828935) | * |
dc.date.modifydate | 20240322114032 | * |