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George Mozdzynski and Yannick Tremolet ECMWF PowerPoint PPT Presentation
George Mozdzynski and Yannick Tremolet ECMWF - IFS developments for future systems IFS Scaling. Slide 3 ... Performance, Programmability and Portability. Operational vs. Research workloads ...
IFS developments for future systems IFS Scaling. Slide 3 ... Performance, Programmability and Portability. Operational vs. Research workloads ...
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Tangent linear and adjoint models PowerPoint PPT Presentation
Tangent linear and adjoint models - Yannick Tremolet, Philippe Lopez, Marta Janiskov . Lars Isaksen, and Gabor Radnoti ... The cost function and its gradient are needed in the minimization. ...
Yannick Tremolet, Philippe Lopez, Marta Janiskov . Lars Isaksen, and Gabor Radnoti ... The cost function and its gradient are needed in the minimization. ...
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The Infrastructure, Design and Applications of PowerPoint PPT Presentation
The Infrastructure, Design and Applications of - The Infrastructure, Design and Applications of Observing System Simulation Experiments at NASA's Global Modeling and Assimilation Office By
The Infrastructure, Design and Applications of Observing System Simulation Experiments at NASA's Global Modeling and Assimilation Office By
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Introduction to data assimilation: Lecture 3 PowerPoint PPT Presentation
Introduction to data assimilation: Lecture 3 - N. American radiosonde network is only 4000 km in extent defining only up to ... 3D DA schemes make sense when all obs are taken at the same time (e.g. radiosondes) ...
N. American radiosonde network is only 4000 km in extent defining only up to ... 3D DA schemes make sense when all obs are taken at the same time (e.g. radiosondes) ...
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Diapositive 1 PowerPoint PPT Presentation
Diapositive 1 - Ami(e) Internaute, Ce cinquante-neuvi me diaporama est le sixi me de dix diaporamas consacr s la Seconde Guerre Mondiale en Alg rie. Il concerne la Campagne de ...
Ami(e) Internaute, Ce cinquante-neuvi me diaporama est le sixi me de dix diaporamas consacr s la Seconde Guerre Mondiale en Alg rie. Il concerne la Campagne de ...
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Developments of ECMWFs Data Assimilation System With Respect to Higherdensity Observations and Highe PowerPoint PPT Presentation
Developments of ECMWFs Data Assimilation System With Respect to Higherdensity Observations and Highe - Convergence is roughly twice as fast with Hessian preconditioning, ... Scores over a 34-day period were very slightly positive, nut not enough to ...
Convergence is roughly twice as fast with Hessian preconditioning, ... Scores over a 34-day period were very slightly positive, nut not enough to ...
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Diapositive 1 PowerPoint PPT Presentation
Diapositive 1 - Ami(e) Internaute, Ce cinquante-neuvi me diaporama est le sixi me de dix diaporamas consacr s la Seconde Guerre Mondiale en Alg rie. Il concerne la Campagne de ...
Ami(e) Internaute, Ce cinquante-neuvi me diaporama est le sixi me de dix diaporamas consacr s la Seconde Guerre Mondiale en Alg rie. Il concerne la Campagne de ...
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Recent Developments on the Assimilation of Satellite Radiances in WRFVar with a focus on AIRS PowerPoint PPT Presentation
Recent Developments on the Assimilation of Satellite Radiances in WRFVar with a focus on AIRS - Recent Developments on the Assimilation of Satellite Radiances in WRFVar with a focus on AIRS
Recent Developments on the Assimilation of Satellite Radiances in WRFVar with a focus on AIRS
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How does 4DVar handle Nonlinearity and nonGaussianity PowerPoint PPT Presentation
How does 4DVar handle Nonlinearity and nonGaussianity - Can we use 4D-Var analysis windows that are longer than the ... Observation errors are modelled as a combination of a Gaussian and a flat (boxcar) distribution: ...
Can we use 4D-Var analysis windows that are longer than the ... Observation errors are modelled as a combination of a Gaussian and a flat (boxcar) distribution: ...
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Developments of ECMWFs Data Assimilation System With Respect to Higherdensity Observations and Highe PowerPoint PPT Presentation
Developments of ECMWFs Data Assimilation System With Respect to Higherdensity Observations and Highe - New humidity analysis formulation (Holm et al. TM383) ... The new humidity analysis (E. Holm) Implied BG-error for Relative Humidity 540 hPa ...
New humidity analysis formulation (Holm et al. TM383) ... The new humidity analysis (E. Holm) Implied BG-error for Relative Humidity 540 hPa ...
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