منابع مشابه
VP/GFS: an Architecture for Virtual Private Grid File Systems
collaborative grant ANI-0301108. The authors also acknowledge a gift from VMware corporation and a SUR grant from IBM. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of NSF, IBM, or VMware.
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This paper outlines the basic concept and mathematical formulation of the Local Ensemble Kalman Filter (LEKF, Ott et al. 2002 and 2003) data assimilation scheme. Some important properties of the scheme are illustrated by numerical experiments with the Lorenz-96 model. Initial implementations of the LEKF on the National Centers for Environmental Prediction Global Forecast System (NCEP GFS) are d...
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The study uses the RM3, the regional climate model at the Center for Climate Systems Research of Columbia University and the NASA/Goddard Institute for Space Studies (CCSR/GISS). The paper evaluates 30 48-hour RM3 weather forecasts over West Africa during September 2006 made on a 0.5° grid nested within 1° Global Forecast System (GFS) global forecasts. September 2006 was the Special Observing P...
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The impacts of the assimilated observations on the 24 hour forecasts are estimated with the ensemble-based method proposed by Kalnay et al. using the ensemble Kalman filter (EnKF). This method estimates the relative impact of observations in data assimilation similarly to the adjoint-based method proposed by Langland and Baker but without using the adjoint model. It is implemented with the Nati...
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ژورنال
عنوان ژورنال: Communications of the ACM
سال: 2010
ISSN: 0001-0782,1557-7317
DOI: 10.1145/1666420.1666439