Nils Wedi

Head of Earth System Modelling
Research Department, Earth System Modelling Section

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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 has been a Principal Scientist since 2010 and is the Head of Earth System Modelling at ECMWF 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. He is 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. Since 2021 he is the co-chair of the WMO Working Group on Numerical Experimentation (WGNE).






Professional interests: 

Nils' interest is in numerical weather prediction and a widening perspective on relevant Earth system components such as atmosphere-land interactions and hydrology, oceans, waves, and sea-ice, with a broad expertise in numerical methods, atmospheric dynamics and physics, across scales from global to laboratory. He also has a special interest in aviation & weather forecasting.

Career background: 
2016- Head of Earth System Modelling
2013-2016 Head of the Numerical Aspects Section
2004-2013  Senior/Principal Scientist, ECMWF

PhD, Ludwig-Maximilians-Universität München, Germany
supervisor: Prof. Dr. U. Schumann, Prof. J. Egger

external advisor: P. K. Smolarkiewicz

1995-2001 Analyst, ECMWF
1990-1995 Diplom, Johannes Gutenberg-Universität Mainz, Germany
supervisor: Prof. Dr. W. Zdunkowski


External recognitions: 
2021- co-Chair of the WMO WWRP/WCRP Working Group on Numerical Experimentation (WGNE)
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

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)

thumbnail photo of Nils Wedi
Contact Details:
nils . wediecmwf . int