M
Michael Fisher
Researcher at European Centre for Medium-Range Weather Forecasts
Publications - 27
Citations - 10688
Michael Fisher is an academic researcher from European Centre for Medium-Range Weather Forecasts. The author has contributed to research in topics: Data assimilation & Numerical weather prediction. The author has an hindex of 20, co-authored 27 publications receiving 9966 citations. Previous affiliations of Michael Fisher include Met Office.
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Journal ArticleDOI
The ERA‐40 re‐analysis
S. Uppala,Per Kållberg,Adrian Simmons,U. Andrae,V. da Costa Bechtold,M. Fiorino,J. K. Gibson,J. Haseler,A. Hernandez,Graeme Kelly,Xiaoming Li,Kazutoshi Onogi,Sami Saarinen,N. Sokka,Richard P. Allan,Richard P. Allan,Erik Andersson,Klaus Arpe,Magdalena Balmaseda,Anton Beljaars,L. van de Berg,Jean Bidlot,Niels Bormann,S. Caires,Frédéric Chevallier,A. Dethof,M. Dragosavac,Michael Fisher,Manuel Fuentes,Stefan Hagemann,Elías Hólm,Brian J. Hoskins,Lars Isaksen,Peter A. E. M. Janssen,Roy L. Jenne,A. P. McNally,Jean-François Mahfouf,Jean-Jacques Morcrette,Nick Rayner,Roger Saunders,P. Simon,Andreas Sterl,Kevin E. Trenberth,A. Untch,Drasko Vasiljevic,Pedro Viterbo,John S. Woollen +46 more
TL;DR: ERA-40 is a re-analysis of meteorological observations from September 1957 to August 2002 produced by the European Centre for Medium-Range Weather Forecasts (ECMWF) in collaboration with many institutions as mentioned in this paper.
Journal ArticleDOI
ERA-20C: An Atmospheric Reanalysis of the Twentieth Century
Paul Poli,Hans Hersbach,Dick Dee,Paul Berrisford,Adrian Simmons,Frederic Vitart,Patrick Laloyaux,David G. H. Tan,Carole Peubey,Jean-Noël Thépaut,Yannick Trémolet,Elías Hólm,Massimo Bonavita,Lars Isaksen,Michael Fisher +14 more
TL;DR: The ERA-20C water cycle features stable precipitation minus evaporation global averages and no spurious jumps or trends as mentioned in this paper, and the assimilation of observations adds realism on synoptic time scales.
Journal ArticleDOI
The ECMWF implementation of three-dimensional variational assimilation (3D-Var). I: Formulation
Philippe Courtier,Erik Andersson,William A. Heckley,Drasko Vasiljevic,Mats Hamrud,Anthony Hollingsworth,Florence Rabier,Michael Fisher,Jean Pailleux +8 more
TL;DR: The 3D-Var model as discussed by the authors uses a spherical-harmonic expansion, much as the ECMWF optimal interpolation (OI) scheme used an expansion of Bessel functions.
Journal ArticleDOI
Aerosol analysis and forecast in the European Centre for Medium‐Range Weather Forecasts Integrated Forecast System: 2. Data assimilation
Angela Benedetti,Jean-Jacques Morcrette,Olivier Boucher,A. Dethof,Richard Engelen,Michael Fisher,Harald Flentje,Nicolás Huneeus,L. Jones,Johannes W. Kaiser,Stefan Kinne,Alexander Mangold,M. Razinger,Adrian Simmons,Martin Suttie +14 more
TL;DR: In this paper, the authors present the new aerosol assimilation system, developed at the European Centre for Medium-Range Weather Forecasts, for the Global and regional Earth-system Monitoring using Satellite and in-situ data (GEMS) project.
Journal ArticleDOI
Inferring CO2 sources and sinks from satellite observations: Method and application to TOVS data
Frédéric Chevallier,Michael Fisher,Philippe Peylin,Soumia Serrar,Philippe Bousquet,François-Marie Bréon,Alain Chédin,P. Ciais +7 more
TL;DR: In this paper, a Bayesian inference scheme was proposed to constrain the inversion of CO2 sources and sinks at the Earth surface by using a variational formulation rather than a pure matrix-based one in order to cope with the large amount of satellite data.