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265
2008: Accelerating the spin-up of Ensemble Kalman Filtering
"... Ensemble Kalman Filter (EnKF) has that disadvantage that the spin-up time needed to reach its asymptotic level of accuracy is longer than the corresponding spin-up time in variational methods (3D-Var or 4D-Var). This is because the ensemble has to fulfill two independent requirements, namely that th ..."
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Cited by 17 (3 self)
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Ensemble Kalman Filter (EnKF) has that disadvantage that the spin-up time needed to reach its asymptotic level of accuracy is longer than the corresponding spin-up time in variational methods (3D-Var or 4D-Var). This is because the ensemble has to fulfill two independent requirements, namely
2008, Asymptotic independence in the spectrum of the Gaussian Unitary Ensemble
"... Consider a n × n matrix from the Gaussian Unitary Ensemble (GUE). Given a finite collection of bounded disjoint real Borel sets (∆i,n, 1 ≤ i ≤ p), properly rescaled, and eventually included in any neighbourhood of the support of Wigner’s semi-circle law, we prove that the related counting measures ( ..."
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Cited by 15 (5 self)
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Consider a n × n matrix from the Gaussian Unitary Ensemble (GUE). Given a finite collection of bounded disjoint real Borel sets (∆i,n, 1 ≤ i ≤ p), properly rescaled, and eventually included in any neighbourhood of the support of Wigner’s semi-circle law, we prove that the related counting measures
improve performance of the Ensembl website
"... Background: The Ensembl web site has provided access to genomic information for almost 10 years. During this time the amount of data available through Ensembl has grown dramatically. At the same time, the World Wide Web itself has become a dramatically more important component of the scientific work ..."
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it was realised that a radical new approach would be required in order to serve the project's future requirements, and development therefore focused on identifying suitable web technologies for implementation in the 2008 site redesign. Results: By comparing the Ensembl website to well-known "Web 2
2008b: An Ensemble-based Four-dimensional Variational Data Assimilation Scheme
- Part II: Observing System Simulation Experiments with the Advanced Research WRF
"... The incremental approach of four-dimensional variational (4D-Var) data assimilation (Courtier et al. 1994) and Ensemble Kalman filters (EnKF, Evensen 1994) are well known as two advanced data ..."
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Cited by 22 (2 self)
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The incremental approach of four-dimensional variational (4D-Var) data assimilation (Courtier et al. 1994) and Ensemble Kalman filters (EnKF, Evensen 1994) are well known as two advanced data
Potential Use of an Ensemble of Analyses in the ECMWF Ensemble Prediction System
"... One of the crucial aspects of the design of an ensemble prediction system is the definition of the ensemble of initial states. This work investigates the use of singular vectors, an ensemble of analyses, and a combination of the two types of perturbations in the ECMWF operational ensemble prediction ..."
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Cited by 3 (1 self)
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forecasts than in the current operational system based on initial-time and evolved SVs. Page 2 of 40Buizza et al 2008: Potential use of an ensemble of analyses in the ECMWF EPS (06/03/08 10:13)
BAND FORECASTS IN THE NORTHEAST REGIONAL ENSEMBLE
"... AbstractIn this study, simulations from the northeast regional Weather Research and Forecasting (WRF) model ensemble of two lake-effect snow events from the 2007-2008 cool season are examined. In these simulations of lake-parallel, lake-effect snow bands downwind of Lake Ontario, a systematic southw ..."
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AbstractIn this study, simulations from the northeast regional Weather Research and Forecasting (WRF) model ensemble of two lake-effect snow events from the 2007-2008 cool season are examined. In these simulations of lake-parallel, lake-effect snow bands downwind of Lake Ontario, a systematic
Consistent operational ensemble variational assimilation
"... a. Ensemble of perturbed assimilations versus deterministic square-root filters The principles of ensemble data assimilation (EnDA) are relatively simple and general. In this study, we will focus on the use of perturbed assimilations, based, on one hand, on explicit observation perturbations (repres ..."
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to an ensemble Kalman filter (EnKF). Similarly, its application to a variational algorithm leads to an ensemble vari-ational assimilation (EnVar), such as the one which is operational at Météo-France since 2008. Such an EnVar system is very easy to implement and run from an existing variational system, as each
FROM CAMP TO COMMUNITY: MUSICAL AND CULTURAL EXCHANGE IN THE 2008 INTERNATIONAL CHORAL ENSEMBLE BY
, 2010
"... During the summer of 2008, the Blue Lake Fine Arts Camp International Choral Ensemble, as a community and individuals, represented American youth, Blue Lake, and the United States as cultural ambassadors, touring in Europe and the Midwest. Throughout the rehearsal and performance process, these adol ..."
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During the summer of 2008, the Blue Lake Fine Arts Camp International Choral Ensemble, as a community and individuals, represented American youth, Blue Lake, and the United States as cultural ambassadors, touring in Europe and the Midwest. Throughout the rehearsal and performance process
Results 1 - 10
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265
