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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 3
Geosci. Model Dev., 10, 1157–1174, 2017
https://doi.org/10.5194/gmd-10-1157-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geosci. Model Dev., 10, 1157–1174, 2017
https://doi.org/10.5194/gmd-10-1157-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Development and technical paper 17 Mar 2017

Development and technical paper | 17 Mar 2017

A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) – Part 1: Offline forward and adjoint transport models

Yosuke Niwa et al.

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Cited articles

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We have developed forward and adjoint models based on NICAM-TM, as part of the 4D-Var system for atmospheric GHGs inversions. The models are computationally efficient enough to make the 4D-Var iterative calculation feasible. Trajectory analysis for high-CO2 concentration events are performed to test adjoint sensitivities; we also demonstrate the potential usefulness of our adjoint model for diagnosing tracer transport.
We have developed forward and adjoint models based on NICAM-TM, as part of the 4D-Var system for...
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