The GEWEX Scientific Steering Group (SSG) guides the formation of GEWEX’s scientific program, and is comprised of scientists from across the world who study issues related to the global water and energy cycles. In addition to monitoring and shaping the course for GEWEX, the SSG briefs the Joint Steering Committee of our parent organization, WCRP, on progress made within GEWEX and general advances in understanding in our areas of scientific expertise.
Information on current and past SSG meetings can be found at GEWEXevents.org.
| SSC Members | Organization | Year of Appointment |
|---|---|---|
 | Jan Polcher (Co-Chair) Director of Research, Centre National de la Recherche Scientifique (CNRS) Laboratoire de Météorologie Dynamique, Institut Pierre Simon Laplace (IPSL) Palaiseau Cedex, France | jan.polcher@lmd.jussieu.fr | 2018 |
 | Xubin Zeng (Co-Chair) Climate Dynamics and Hydrometeorology Center University of Arizona Tucson, AZ, USA | xubin@atmo.arizona.edu | 2021 |
 | Myoung-Hwan Ahn Department of Climate and Energy Systems Engineering EWHA Womans University Seoul, Republic of Korea | terryahn65@ewha.ac.kr | 2022 |
 | Camila Alvarez-Garreton Center for Climate and Resilience Research, University of Chile Santiago, Chile | calvarezgarreton@gmail.com | 2025 |
 | Martin Best Met Office Exeter, Devon, United Kingdom | martin.best@metoffice.gov.uk | 2025 |
 | Susanne Crewell Institute for Geophysics and Meteorology, University of Cologne Center for Earth System Observation and Computational Analysis (CESOC) Cologne, Germany | susanne.crewell@uni-koeln.de | 2023 |
 | Jason Evans University of New South Wales Sydney, NSW, Australia | jason.evans@unsw.edu.au | 2025 |
 | Richard Forbes European Centre for Medium-Range Weather Forecasts (ECMWF) Reading, United Kingdom | richard.forbes@ecmwf.int | 2024 |
 | Li Jia Aerospace Information Research Institute (AIR), Chinese Academy of Sciences (CAS) Beijing, China | jiali@aircas.ac.cn | 2024 |
 | Benjamin Lamptey Suez Consulting Company Ghana | bllamptey@gmail.com | 2022 |
 | L. Ruby Leung Pacific Northwest National Laboratory (PNNL) Richland, WA, U.S.A. | ruby.leung@pnl.gov | 2022 |
 | Maria Piles Guillem Universitat de València València, Spain | Maria.piles@uv.es | 2022 |
 | Manon Sabot Max Planck Institute for Biogeochemistry Jena, Germany | msabot@bgc-jena.mpg.de | 2025 |
 | Gavin Schmidt NASA Goddard Institute for Space Studies New York, NY, USA | gavin.a.schmidt@nasa.gov | 2024 |
| SSC Members | Organization | Period of Appointment |
|---|---|---|
 | Lisa Alexander Climate Change Research Centre University of New South Wales Sydney NSW, Australia | l.alexander@unsw.edu.au | 2015 - 2018 |
 | Gianpaolo Balsamo Coupled Processes, Earth System Model (CP/ESM) European Centre for Medium-range Weather Forecasts (ECMWF) Reading, UK | gianpaolo.balsamo@ecmwf.int | 2017 |
 | Michael G. Bosilovich Global Modeling and Assimilation Office NASA's Goddard Space Flight Center Greenbelt, Maryland USA | michael.g.bosilovich@nasa.gov | 2017–2023 |
 | Nathalie de Noblet-Ducoudré Le Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette, France | nathalie.de-noblet@lsce.ipsl.fr | 2015 - 2018 |
 | Paul Dirmeyer Department of Atmospheric, Oceanic and Earth Sciences George Mason University Fairfax, VA, USA | pdirmeye@gmu.edu | 2017-2021 |
 | Qingyun Duan College of Hydrology and Water Resources Hohai University Beijing, China | qyduan@hhu.edu.cn | 2018–2024 |
 | Gabi Hegerl School of GeoSciences University of Edinburgh Edinburgh, Schotland | gabi.hegerl@ed.ac.uk | 2019–2022 |
 | Branka Ivankan-Picek Meteorological and Hydrological Service Zagreb, Croatia | picek@cirus.dhz.hr | 2017-2020 |
 | Christian Jakob School of Earth, Atmosphere, and Environment Monash University Clayton (VIC), Australia | christian.jakob@monash.edu | 2019–2022 |
 | Linda Mearns National Center for Atmospheric Research (NCAR) Boulder, CO, USA | lindam@ucar.edu | 2023–2024 |
 | Germán Poveda Department of Geosciences and Environment Universidad Nacional de Colombia Medellín, Colombia | gpoveda@unal.edu.co | 2015–2022 |
 | Sonia I. Seneviratne Institute for Atmospheric and Climate Science ETH Zurich, Land-Climate Dynamics sonia.seneviratne@ethz.ch | 2014 - 2018 |
 | B.J. Sohn School of Earth and Environmental Science Seoul National University Seoul, South Korea | sohn@snu.ac.kr | 2018-2021 |
 | Graeme Stephens Director, Center for Climate Sciences NASA Jet Propulsion Laboratory Pasadena, CA, USA | Graeme.Stephens@jpl.nasa.gov | Co-chair 2014–2021 member 2021–2022 |
 | Anna Stewart Ibarra Inter-American Institute for Global Change Research (IAI) Montevideo, Uruguay | astewart@dir.iai.int | 2023–2024 |
 | Bob Su Faculty of Geo-Information Science and Earth Observation (ITC) University of Twente Enschede, The Netherlands | z.su@utwente.nl | 2019–2024 |
 | Remko Uijlenhoet Hydrology and Quantitative Water Management Group Department of Environmental Sciences Wageningen University The Netherlands | Remko.Uijlenhoet@wur.nl | 2014 - 2018 |
