Dr Nils P. Wedi joined ECMWF in 1995. He received his PhD degree from the Ludwig-Maximilians-Universität, München. His career at ECMWF encapsulates a diverse range of work both technical and scientific. He is the Digital Technology Lead for Destination Earth at ECMWF, a recent initiative which is part of the European Commission’s Green Deal and the Digital Strategy. Destination Earth will create a high precision digital model of the Earth to model, monitor and simulate natural phenomena and related human activities. Prior to this appointment, Nils led ECMWF’s Earth System Modelling section that addresses all aspects of scientific and computational performance relating to ECMWF's forecast model and the ensemble forecasting system. He develops strategies to secure the scalability of the model on future high-performance computing systems and he has been involved in a number of H2020 projects to address the challenge of rising energy costs for computing towards affordable, exascale high performance data assimilation and simulations of weather and climate at km-scale resolutions. He actively collaborates with researchers worldwide, in particular through his role as a co-chair of the WMO working group on numerical experimentation (WGNE), a key link between weather and climate research.
Nils's interest is in numerical weather prediction, high performance computing, and a widening perspective of relevant Earth system components such as oceans, waves, sea-ice and interconnecting impacts associated with the carbon and hydrological cycle, relevant for climate monitoring and projection. He has a broad expertise in numerical methods, atmospheric dynamics and physics, across scales from global to laboratory. He also has a special interest in aviation and weather forecasting.
2021- |
Digital Technology Lead for Destination Earth, ECMWF |
2016-2021 |
Head of the Earth System Modelling Section |
2013-2016 |
Head of the Numerical Aspects Section |
2004-2013 |
Senior/Principal Scientist, ECMWF |
2001-2004 |
PhD, Ludwig-Maximilians-Universität München, Germany external advisor: P. K. Smolarkiewicz |
1995-2001 |
Analyst, ECMWF |
1990-1995 |
Diplom, Johannes Gutenberg-Universität Mainz, Germany |
2021- |
co-Chair of the WMO WWRP/WCRP Working Group on Numerical Experimentation (WGNE) |
2021- |
Chair of the NEMO Scientific Advisory Committee |
2018- |
Member of the H2020 IMMERSE external expert Advisory Board |
2015-2020 |
Member of the WMO JSC/CAS Working Group on Numerical Experimentation (WGNE) |
2015-2020 |
Member in the working group ETP4HPC SRA Mathematics and Algorithms for extreme scale HPC systems |
2015-2016 |
Member in the working group ETP4HPC SRA Energy and Resiliency |
2010-2015 |
Executive Board Member of the Unified Model (UM) dynamical core project, which is part of the Next-Generation-Weather-and-Climate-Prediction (NGWCP) programme |
2007- |
Expert member of the Short Range Numerical Weather Prediction (SRNWP) network “Dynamics and lateral boundary coupling” |
2003-2008 |
Member of the Partnership for Research Infrastructures in Earth System Modelling (PRISM) |
- 2022
- Takafumi Kanehama, irina sandu, Anton Beljaars, Annelize van Niekerk, Nils Wedi, Souhail Boussetta, Simon Lang, Stephanie Johnson, Linus Magnusson (March 2022) Evaluation and optimizaton of orographic drag in the IFS, ECMWF Technical Memoranda n. 893. DOI: 10.21957/fps6gngqe
- Nils Wedi, Peter Bauer, Tiago Quintino (April 2022) From the Scalability Programme to Destination Earth, ECMWF Newsletter, issue 171, pp. 15-22. DOI: 10.21957/pb2vnp59ks
- 2021
- Peter Dueben, Umberto Modigliani, Alan Geer, Stephan Siemen, Florian Pappenberger, Peter Bauer, Andy Brown, Martin Palkovic, Baudouin Raoult, Nils Wedi, Vasileios Baousis (January 2021) Machine learning at ECMWF: A roadmap for the next 10 years, ECMWF Technical Memoranda n. 878. DOI: 10.21957/ge7ckgm
- Inna Polichtchouk, Peter Bechtold, Massimo Bonavita, Richard Forbes, Sean Healy, Robin Hogan, Patrick Laloyaux, Michael Rennie, Timothy Stockdale, Nils Wedi, Michail Diamantakis, Johannes Flemming, Stephen English, Lars Isaksen, Filip Vána, Sonja Gisinger, Nicholas Byrne (January 2021) Stratospheric modelling and assimilation, ECMWF Technical Memoranda n. 877. DOI: 10.21957/25hegfoq
- 2020
- Peter Bauer, Tiago Quintino, Nils Wedi, Antonino Bonanni, Marcin Chrust, Willem Deconinck, Michail Diamantakis, Peter Dueben, Stephen English, Johannes Flemming, Paddy Gillies, Ioan Hadade, James Hawkes, Mike Hawkins, Olivier Iffrig, Christian Kühnlein, Michael Lange, Peter Lean, Olivier Marsden, Andreas Müller, Sami Saarinen, Domokos Sarmany, Michael Sleigh, Simon Smart, PIOTR SMOLARKIEWICZ, Daniel Thiemert, Giovanni Tumolo, Christian Weihrauch, Cristiano Zanna, Pedro Maciel (February 2020) The ECMWF Scalability Programme: Progress and Plans, ECMWF Technical Memoranda n. 857. DOI: 10.21957/gdit22ulm
- 2019
- Inna Polichtchouk, Timothy Stockdale, Peter Bechtold, Michail Diamantakis, Sylvie Malardel, irina sandu, Filip Vána, Nils Wedi (June 2019) Control on stratospheric temperature in IFS: resolution and vertical advection, ECMWF Technical Memoranda n. 847. DOI: 10.21957/cz3t12t7e
- 2018
- Peter Dueben, Michail Diamantakis, Simon Lang, Sami Saarinen, irina sandu, Nils Wedi, Tomas Wilhelmsson (October 2018) Progress in using single precision in the IFS, ECMWF Newsletter, issue 157, pp. 26-31. DOI: 10.21957/ps2y9gfa2d
- 2017
- irina sandu, Ayrton Zadra, Nils Wedi (December 2017) Impact of orographic drag on forecast skill, ECMWF newsletter, issue 150, pp. 18-24. DOI: 10.21957/icghjblyn7
- Robin Hogan, Maike Ahlgrimm, Gianpaolo Balsamo, Anton Beljaars, P. Berrisford, Alessio Bozzo, Francesca Di Giuseppe, R.M. Forbes, Thomas Haiden, Simon Lang, Michael Mayer, I. Polichtchouk, irina sandu, Frederic Vitart, Nils Wedi (December 2017) Radiation in numerical weather prediction, ECMWF Technical Memoranda n. 816. DOI: 10.21957/2bd5dkj8x
- 2016
- Malardel S., Nils Wedi, Willem Deconinck, Michail Diamantakis, Christian Kühnlein, Mozdzynski G., Hamrud M., PIOTR SMOLARKIEWICZ (December 2016) A new grid for the IFS, ECMWF Newsletter, issue 146, pp. 23-28. DOI: 10.21957/zwdu9u5i
- Jean Bidlot, Luigi Cavaleri, Luciana Bertotti, Francesco Barbariol, Alvise Benetazzo, Peter A. E. M. Janssen, Nils Wedi (December 2016) What conditions led to the Draupner freak wave?, ECMWF Newsletter, issue 148, pp. 37-40. DOI: 10.21957/mgirfga3
- 2015
- Nils Wedi, Peter Bauer, Willem Deconinck, Michail Diamantakis, M. Hamrud, Christian Kühnlein, S. Malardel, Kristian S. Mogensen, G. Mozdzynski, PIOTR SMOLARKIEWICZ (December 2015) The modelling infrastructure of the Integrated Forecasting System: Recent advances and future challenges, ECMWF Technical Memoranda n. 760. DOI: 10.21957/thtpwp67e
- PIOTR SMOLARKIEWICZ, Willem Deconinck, Hamrud M., Christian Kühnlein, Mozdzynski G., Szmelter J., Nils Wedi (December 2015) An all-scale, finite-volume module for the IFS, ECMWF Newsletter, issue 145, pp. 24-29. DOI: 10.21957/f4gm176p
- 2014
- Gianpaolo Balsamo, Anna Agusti-Panareda, C. Albergel, Anton Beljaars, Souhail Boussetta, Emanuel Dutra, T. Komori, S.T.K. Lang, Joaquin Muñoz-Sabater, Florian Pappenberger, Patricia de Rosnay, irina sandu, Nils Wedi, Antje Weisheimer, Fredrik Wetterhall, Ervin Zsoter (October 2014) Representing the Earth surfaces in the Integrated Forecasting System: Recent advances and future challenges, ECMWF Technical Memoranda n. 729. DOI: 10.21957/tp28b09ds
- C. Albergel, Joaquin Muñoz-Sabater, Thomas Haiden, Gianpaolo Balsamo, Anton Beljaars, L. Isaksen, Patricia de Rosnay, irina sandu, Nils Wedi (November 2014) Soil temperature at ECMWF: an assessment using ground-based observations, ECMWF Technical Memoranda n. 735. DOI: 10.21957/xg3aylkvt
- 2013
- Saleh Abdalla, L. Isaksen, Peter A. E. M. Janssen, Nils Wedi (December 2013) Effective spectral resolution of ECMWF atmospheric forecast models, ECMWF Newsletter, issue 137, pp. 19-22. DOI: 10.21957/rue4o7ac
- Linus Magnusson, A.J. Thorpe, Massimo Bonavita, S.T.K. Lang, A. McNally, Nils Wedi (April 2013) Evaluation of forecasts for hurricane Sandy, ECMWF Technical Memoranda n. 699, pp. 28. DOI: 10.21957/b5nhw6qe1
- 2012
- Mark John Rodwell, Magnusson L., Peter Bauer, Peter Bechtold, Massimo Bonavita, Carla Cardinali, Michail Diamantakis, P. Earnshaw, Anotonio Garcia-Mendez, L. Isaksen, Källén E., Klocke D., Philippe Lopez, Tony McNally, Persson A., Fernando Prates, Nils Wedi (December 2012) A case study of occasional poor medium-range forecasts for Europe, ECMWF Newsletter, issue 131, pp. 16-24. DOI: 10.21957/ocaqy91i
- Mark John Rodwell, Magnusson L., Peter Bauer, Peter Bechtold, Carla Cardinali, Michail Diamantakis, Källén E., Klocke D., Philippe Lopez, Tony McNally, Persson A., Fernando Prates, Nils Wedi (December 2012) Characteristics of occasional poor medium-range forecasts for Europe, ECMWF Newsletter, issue 131, pp. 11-15. DOI: 10.21957/lnhbsxr4
- Nils Wedi, Hamrud M., Mozdzynski G., Austad G., Curic S., Jean Bidlot (December 2012) Global, non-hydrostatic, convection-permitting, medium-range forecasts: progress and challenges, ECMWF Newsletter, issue 133, pp. 17-22. DOI: 10.21957/cequld5s
- 2011
- K. Yessad, Nils Wedi (December 2011) The hydrostatic and non-hydrostatic global model IFS/ARPEGE: deep-layer model formulation and testing, ECMWF Technical Memorandum n. 657, pp. 26. DOI: 10.21957/8is8dmk08
- 2010
- Mark John Rodwell, T. Jung, Peter Bechtold, P. Berrisford, Niels Bormann, Carla Cardinali, Laura Ferranti, Timothy Hewson, Franco Molteni, Nils Wedi, Magdalena A. Balmaseda, Gianpaolo Balsamo, Massimo Bonavita, Roberto Buizza, Mohamed Dahoui, Anotonio Garcia-Mendez, Martin Leutbecher, Philippe Lopez, Y. Trémolet, Frederic Vitart (October 2010) Developments in diagnostics research, ECMWF Technical Memoranda n. 637, pp. 49. DOI: 10.21957/tnuoos42a
- Nils Wedi, Malardel S. (December 2010) Non-hydrostatic modelling at ECMWF, ECMWF Newsletter, issue 125, pp. 17-21. DOI: 10.21957/rzojr98e
- 2009
- Nils Wedi, PIOTR SMOLARKIEWICZ (October 2009) A nonlinear perspective on the dynamics of the MJO: idealized large-eddy simulations, ECMWF Technical Memorandum n. 602, pp. 26. DOI: 10.21957/0si4ddm8i
- Nils Wedi, K. Yessad, A. Untch (October 2009) The non-hydrostatic global IFS/ARPEGE model: model formulation and testing, ECMWF Technical Memorandum n. 594, pp. 34. DOI: 10.21957/tl4f0ao4t
- A. Orr, Nils Wedi (May 2009) The representation of non-orographic gravity waves in the IFS Part I: Assessment of the middle atmosphere climate with Rayleigh friction, ECMWF Technical Memorandum n. 592, pp. 15. DOI: 10.21957/45nr8vsb
- 2006
- Roberto Buizza, Jean Bidlot, Nils Wedi, Manuel Fuentes, Mats Hamrud, Graham Holt, Tim Palmer, Frederic Vitart (December 2006) The ECMWF Variable Resolution Ensemble Prediction System (VAREPS), ECMWF Newsletter, issue 108, pp. 14-20. DOI: 10.21957/st10ye392d
- Roberto Buizza, Jean Bidlot, Nils Wedi, Manuel Fuentes, M. Hamrud, G. Holt, T.N. Palmer, Frederic Vitart (July 2006) The new ECMWF Variable Resolution Ensemble Prediction System (VAREPS): methodology and validation., ECMWF Technical Memoranda n. 499, pp. 32. DOI: 10.21957/u29g10kaa
- 2003
- Nils Wedi, PIOTR SMOLARKIEWICZ (April 2003) Extending Gal-Chen and Somerville terrain-following coordinate transformation on time-dependent curvilinear boundaries, ECMWF Technical Memorandum n. 405, pp. 23. DOI: 10.21957/2xk2tyvy9
- 2002
- C. Brankovic, M.J. Miller, A. Untch, Nils Wedi (January 2002) Climate diagnostics of the ECMWF AMIP-2 simulations, ECMWF Technical Memorandum n. 360, pp. 38. DOI: 10.21957/atqy6q5a8
- 1999
- Nils Wedi (March 1999) The numerical coupling of the physical parametrizations to the dynamical equations in a forecast model, ECMWF Technical Memorandum n. 274, pp. 37. DOI: 10.21957/6gp4sgiys
- 1998
- Roberto Buizza, T. Petroliagis, T.N. Palmer, J. Barkmeijer, M. Hamrud, A. Hollingsworth, Adrian Simmons, Nils Wedi (January 1998) Impact of model resolution and ensemble size of the performance of an EnsemblePrediction System, ECMWF Technical Memorandum n. 245, pp. 31. DOI: 10.21957/z14fp38jq