Article (Scientific journals)
State-of-the-art stochastic data assimilation methods for high-dimensional non-Gaussian problems
Vetra-Carvalho, Sanita; van Leeuwen, Peter Jan; Nerger, Lars et al.
2018In Tellus. Series A, 70
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Keywords :
ensemble Kalman filter; particle filter; data assimilation
Abstract :
[en] This paper compares several commonly used state-of-the-art ensemble-based data assimilation methods in a coherent mathematical notation. The study encompasses different methods that are applicable to high-dimensional geophysical systems, like ocean and atmosphere and provide an uncertainty estimate. Most variants of Ensemble Kalman Filters, Particle Filters and second-order exact methods are discussed, including Gaussian Mixture Filters, while methods that require an adjoint model or a tangent linear formulation of the model are excluded. The detailed description of all the methods in a mathematically coherent way provides both novices and experienced researchers with a unique overview and new insight in the workings and relative advantages of each method, theoretically and algorithmically, even leading to new filters. Furthermore, the practical implementation details of all ensemble and particle filter methods are discussed to show similarities and differences in the filters aiding the users in what to use when. Finally, pseudo-codes are provided for all of the methods presented in this paper.
Research center :
GHER
Disciplines :
Earth sciences & physical geography
Author, co-author :
Vetra-Carvalho, Sanita
van Leeuwen, Peter Jan
Nerger, Lars
Barth, Alexander  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Altaf, M. Umer
Brasseur, Pierre
Kirchgessner, Paul
Beckers, Jean-Marie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Language :
English
Title :
State-of-the-art stochastic data assimilation methods for high-dimensional non-Gaussian problems
Publication date :
21 March 2018
Journal title :
Tellus. Series A
ISSN :
0280-6495
eISSN :
1600-0870
Publisher :
Taylor & Francis, United Kingdom
Volume :
70
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 283580 - SANGOMA - Stochastic Assimilation for the Next Generation Ocean Model Applications
Name of the research project :
Sangoma
Funders :
UE - Union Européenne [BE]
CE - Commission Européenne [BE]
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