Dual number-based variational data assimilation: Constructing exact tangent linear and adjoint code from nonlinear model evaluations

Dual numbers allow for automatic, exact evaluation of the numerical derivative of high-dimensional functions at an arbitrary point with minimal coding effort. We use dual numbers to construct tangent linear and adjoint model code for a biogeochemical ocean model and apply it to a variational (4D-Var...

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Detalles Bibliográficos
Autores principales: Mattern, Jann Paul, Edwards, Christopher A., Hill, Christopher N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6795413/
https://www.ncbi.nlm.nih.gov/pubmed/31618274
http://dx.doi.org/10.1371/journal.pone.0223131

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6795413/
https://www.ncbi.nlm.nih.gov/pubmed/31618274
http://dx.doi.org/10.1371/journal.pone.0223131

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