| The ERA‐40 re‐analysis SM Uppala, PW Kållberg, AJ Simmons, U Andrae, V Bechtold, M Fiorino, ... Quarterly Journal of the Royal Meteorological Society 131 (612), 2961-3012, 2005 | 8380 | 2005 |
| ERA-20C: An atmospheric reanalysis of the twentieth century P Poli, H Hersbach, DP Dee, P Berrisford, AJ Simmons, F Vitart, ... Journal of Climate 29 (11), 4083-4097, 2016 | 1089 | 2016 |
| The ECMWF implementation of three‐dimensional variational assimilation (3D‐Var). I: Formulation P Courtier, E Andersson, W Heckley, D Vasiljevic, M Hamrud, ... Quarterly Journal of the Royal Meteorological Society 124 (550), 1783-1807, 1998 | 869 | 1998 |
| Coauthors, 2009: Aerosol analysis and forecast in the European Centre for Medium-Range Weather Forecasts integrated forecast system: 2. Data assimilation A Benedetti, JJ Morcrette, O Boucher, A Dethof, RJ Engelen J. Geophys. Res 114, D13205, 2012 | 576* | 2012 |
| Background error covariance modelling M Fisher Seminar on recent development in data assimilation for atmosphere and ocean …, 2003 | 419 | 2003 |
| Inferring CO2 sources and sinks from satellite observations: Method and application to TOVS data F Chevallier, M Fisher, P Peylin, S Serrar, P Bousquet, FM Bréon, ... Journal of geophysical research 110 (D24), D24309, 2005 | 331 | 2005 |
| Estimating the covariance matrices of analysis and forecast error in variational data assimilation M Fisher ECMWF Tech. Mem. 220, 1995 | 270 | 1995 |
| Stochastic representations of model uncertainties at ECMWF: State of the art and future vision M Leutbecher, SJ Lock, P Ollinaho, STK Lang, G Balsamo, P Bechtold, ... Quarterly Journal of the Royal Meteorological Society 143 (707), 2315-2339, 2017 | 247 | 2017 |
| Lagrangian four‐dimensional variational data assimilation of chemical species M Fisher, DJ Lary Quarterly Journal of the Royal Meteorological Society 121 (527), 1681-1704, 2006 | 229 | 2006 |
| The ERA-40 re-analysis, QJ Roy. Meteor. Soc., 131, 2961–3012 SM Uppala, PW Kållberg, AJ Simmons, U Andrae, VDC Bechtold, ... | 211 | 2005 |
| The data assimilation system and initial performance evaluation of the ECMWF pilot reanalysis of the 20th-century assimilating surface observations only (ERA-20C) P Poli, H Hersbach, D Tan, D Dee, JN Thépaut, A Simmons, C Peubey, ... ERA Report 14, 2013 | 206 | 2013 |
| Ensemble of data assimilations at ECMWF L Isaksen, M , Bonavita, R Buizza, M Fisher, J Haseler, M Leutbecher, ... ECMWF Technical Memoranda 636, 2010 | 193 | 2010 |
| Developments in 4D-Var and Kalman filtering M Fisher, E Andersson European Centre for Medium-Range Weather Forecasts, 2001 | 189 | 2001 |
| The evolution of the ECMWF hybrid data assimilation system M Bonavita, E Hólm, L Isaksen, M Fisher Quarterly Journal of the Royal Meteorological Society, 2015 | 184 | 2015 |
| On the equivalence between Kalman smoothing and weak‐constraint four‐dimensional variational data assimilation M Fisher, M Leutbecher, GA Kelly Quarterly Journal of the Royal Meteorological Society 131 (613), 3235-3246, 2006 | 152 | 2006 |
| The ERA-40 re-analysis. vol. 131 SM Uppala, PW Kållberg, AJ Simmons, U Andrae, VDC Bechtold, ... QJR Meteorol Soc, 2961-3012, 2005 | 142 | 2005 |
| Rapid descent of mesospheric air into the stratospheric polar vortex M Fisher, A O'Neill, R Sutton Geophysical research letters 20 (12), 1267-1270, 1993 | 133 | 1993 |
| Minimization algorithms for variational data assimilation M Fisher Proc. of ECMWF Seminar on Recent Development in Numerical Methods for …, 1998 | 126 | 1998 |
| Diagnosis of background errors for radiances and other observable quantities in a variational data assimilation scheme, and the explanation of a case of poor convergence E Anderson, M Fisher, R Munro, A McNally Quarterly Journal of the Royal Meteorological Society 126 (565), 1455-1472, 2000 | 113 | 2000 |
| Observing‐system impact assessment using a data assimilation ensemble technique: application to the ADM–Aeolus wind profiling mission DGH Tan, E Andersson, M Fisher, L Isaksen Quarterly Journal of the Royal Meteorological Society 133 (623), 381-390, 2007 | 106 | 2007 |
