Senior ScientistResearch Department, Integrated Forecast Systems Section, System Design Grouppage tabs Profile Summary: I am a senior scientist at ECMWF and joined in 2011 to create the 'OpenIFS' project. I manage the OpenIFS project which provides the OpenIFS model, a version of the ECMWF Integrated Forecast System (IFS) to universities and research institutes for research and education. I am part of the IFS section and work closely with other scientists in the research department and across ECMWF. I also work closely with scientists in other institutes who are working with OpenIFS. For more information about OpenIFS please see the link to the right. Career background: I studied physics, atmospheric dynamics and physics at Imperial College, London and then completed a PhD in numerical modelling in meteorology at the university of Edinburgh. I then went to the university of Cambridge to eventually become a NCAS senior scientist. I worked on topics such as ozone depletion, stratospheric dynamics and tropospheric chemistry, tracer transport, and oversaw the development of the Cambridge off-line chemistry model, chemical mechanism solvers, and created and managed the IUPAC chemical kinetics database and website on behalf of the IUPAC subcommittee on kinetics. Publications 2022Xavier Yepes-Arbós, Gijs van den Oord, Mario C. Acosta, Glenn D. Carver (January 2022) Evaluation and optimisation of the I/O scalability for the next generation of Earth system models: IFS CY43R3 and XIOS 2.0 integration as a case study, Geoscientific Model Development. DOI: 10.5194/gmd-15-379-2022 Ralf Döscher, Mario Acosta, Andrea Alessandri, Peter Anthoni, Thomas Arsouze, Tommi Bergman, Raffaele Bernardello, Souhail Boussetta, Louis-Philippe Caron, Glenn Carver, Miguel Castrillo, Franco Catalano, Ivana Cvijanovic, Paolo Davini, Evelien Dekker, Francisco J. Doblas-Reyes, David Docquier, Pablo Echevarria, Uwe Fladrich, Ramon Fuentes-Franco, Matthias Gröger, Jost v. Hardenberg, Jenny Hieronymus, M. Pasha Karami, Jukka-Pekka Keskinen, Torben Koenigk, Risto Makkonen, François Massonnet, Martin Ménégoz, Paul A. Miller, Eduardo Moreno-Chamarro, Lars Nieradzik, Twan van Noije, Paul Nolan, Declan O'Donnell, Pirkka Ollinaho, Gijs van den Oord, Pablo Ortega, Oriol Tintó Prims, Arthur Ramos, Thomas Reerink, Clement Rousset, Yohan Ruprich-Robert, Philippe Le Sager, Torben Schmith, Roland Schrödner, Federico Serva, Valentina Sicardi, Marianne Sloth Madsen, Benjamin Smith, Tian Tian, Etienne Tourigny, Petteri Uotila, Martin Vancoppenolle, Shiyu Wang, David Wårlind, Ulrika Willén, Klaus Wyser, Shuting Yang, Xavier Yepes-Arbós, Qiong Zhang (April 2022) The EC-Earth3 Earth system model for the Coupled Model Intercomparison Project 6, Geoscientific Model Development n. 7, pp. 2973–3020. DOI: 10.5194/gmd-15-2973-2022 Vincent Huijnen, Philippe Le Sager, Marcus O. Köhler, Glenn Carver, Samuel Rémy, Johannes Flemming, Simon Chabrillat, Quentin Errera, Twan van Noije (August 2022) OpenIFS/AC: atmospheric chemistry and aerosol in OpenIFS 43r3, Geoscientific Model Development. DOI: 10.5194/gmd-15-6221-2022 Vincent Huijnen, Philippe Le Sager, Marcus O. Köhler, Glenn Carver, Samuel Rémy, Johannes Flemming, Simon Chabrillat, Quentin Errera, Twan van Noije (April 2022) OpenIFS/AC: atmospheric chemistry and aerosol in OpenIFS 43r3. DOI: 10.5194/gmd-2022-80 2021Sarah Sparrow, Andrew Bowery, Glenn D. Carver, Marcus O. Köhler, Pirkka Ollinaho, Florian Pappenberger, David Wallom, Antje Weisheimer (June 2021) OpenIFS@home version 1: a citizen science project for ensemble weather and climate forecasting, Geoscientific Model Development. DOI: 10.5194/gmd-14-3473-2021 Souhail Boussetta, Gianpaolo Balsamo, Gabriele Arduini, Emanuel Dutra, Joe McNorton, Margarita Choulga, Anna Agustí-Panareda, Anton Beljaars, Nils Wedi, Joaquin Muñoz-Sabater, Patricia de Rosnay, Irina Sandu, Ioan Hadade, Glenn Carver, Cinzia Mazzetti, Christel Prudhomme, Dai Yamazaki, Ervin Zsoter (June 2021) ECLand: The ECMWF Land Surface Modelling System, Atmosphere. DOI: 10.3390/atmos12060723 Pirkka Ollinaho, Glenn D. Carver, Simon T. K. Lang, Lauri Tuppi, Madeleine Ekblom, Heikki Järvinen (April 2021) Ensemble prediction using a new dataset of ECMWF initial states – OpenEnsemble 1.0, Geoscientific Model Development. DOI: 10.5194/gmd-14-2143-2021 Xavier Yepes-Arbós, Gijs van den Oord, Mario C. Acosta, Glenn D. Carver (June 2021) Evaluation and optimisation of the I/O scalability for the next generation of Earth system models: IFS CY43R3 and XIOS 2.0 integration as a case study. DOI: 10.5194/gmd-2021-65 2020Joakim Kjellsson, Jan Streffing, Glenn Carver, Marcus O. Köhler (July 2020) From weather forecasting to climate modelling using OpenIFS, ECMWF Newsletter, issue 164, pp. 38-41. DOI: 10.21957/469hc10jk5 Sarah Sparrow, Andrew Bowery, Glenn D. Carver, Marcus O. Köhler, Pirkka Ollinaho, Florian Pappenberger, David Wallom, Antje Weisheimer (September 2020) OpenIFS@home version 1: a citizen science project for ensemble weather and climate forecasting. DOI: 10.5194/gmd-2020-217 Pirkka Ollinaho, Glenn D. Carver, Simon T. K. Lang, Lauri Tuppi, Madeleine Ekblom, Heikki Järvinen (November 2020) Ensemble prediction using a new dataset of ECMWF initial states – OpenEnsemble 1.0. DOI: 10.5194/gmd-2020-292 2019Glenn Carver, Kerstin Hartung, Pirkka Ollinaho, Sinclair V., Struthers H., G. Svensson (April 2019) The varied uses of OpenIFS, ECMWF Newsletter, issue 159, pp. 31-34. DOI: 10.21957/b5wf2gclr6 Gabriella Szépszó, Victoria Sinclair, Glenn Carver (April 2019) Using the ECMWF OpenIFS model and state-of-the-art training techniques in meteorological education, Advances in Science and Research, pp. 39–47. DOI: 10.5194/asr-16-39-2019 2018Yepes-Arbos X., M. Acosta, van den Oord G., Glenn Carver (September 2018) Computational aspects and performance evaluation of the IFS-XIOS integration, ECMWF Technical Memorandum n. 825. DOI: 10.21957/ggapxuny0 2017 (2017) Mixed Single/Double Precision in OpenIFS: A Detailed Study of Energy Savings, Scaling Effects, Architectural Effects, and Compilation Effects, EGU General Assembly Conference Abstracts, pp. 10729. (2017) The Abisko Polar Prediction School, Bulletin of the American Meteorological Society n. 3, pp. 445–447. (2017) OpenEPS-An ensemble prediction system emulator for OpenIFS, EGU General Assembly Conference Abstracts, pp. 17529. (2017) Single precision in weather forecasting models: An evaluation with the IFS, Monthly Weather Review n. 2, pp. 495–502. 2016Filip Vána, Glenn Carver, Simon Lang, Martin Leutbecher, Deborah Salmond, Peter Dueben, Tim Palmer (2016) Single-precision IFS, ECMWF Newsletter, issue 148, pp. 20-23. DOI: 10.21957/avq2i3tp 2014 (2014) Adjoint formulation of the TOMCAT atmospheric transport scheme in the Eulerian backtracking framework (RETRO-TOM), Atmospheric Chemistry and Physics n. 11, pp. 5477–5493. (2014) Metview and VAPOR: Exploring ECMWF forecasts easily in four dimensions, EGU General Assembly Conference Abstracts. (2014) Training the next generation of scientists in Weather Forecasting: new approaches with real models, EGU General Assembly Conference Abstracts. P. E. Haines, J. G. Esler, G. D. Carver (January 2014) Technical Note: Adjoint formulation of the TOMCAT atmospheric transport scheme in the Eulerian backtracking framework (RETRO-TOM) n. 2, pp. 1481–1524. DOI: 10.5194/acpd-14-1481-2014 P. E. Haines, J. G. Esler, G. D. Carver (June 2014) Technical Note: Adjoint formulation of the TOMCAT atmospheric transport scheme in the Eulerian backtracking framework (RETRO-TOM), Atmospheric Chemistry and Physics n. 11, pp. 5477–5493. DOI: 10.5194/acp-14-5477-2014 2013 (2013) The ECMWF OpenIFS model, EGU General Assembly Conference Abstracts. Hannachi A., Kjellsson J., Tjernström M., Glenn Carver (2013) Teaching with OpenIFS at Stockholm University: leading the learning experience, ECMWF Newsletter, issue 134, pp. 12-15. DOI: 10.21957/v4u9zv8r 2012 (2012) Nighttime chemistry: observations and modelling from RONOCO, EGU General Assembly Conference Abstracts, pp. 14333. (2012) The Ice-core Record of Atmospheric Methane: Chemistry-Climate Interactions on Tens to Thousands of Years, EGU General Assembly Conference Abstracts, pp. 9540. 2011 (2011) The effect of tropical islands on the chemical mixing of biogenics and their oxidation products from the surface layer to the upper troposphere, AGU Fall Meeting Abstracts. (2011) Reconciling the changes in atmospheric methane sources and sinks between the Last Glacial Maximum and the pre-industrial era, Geophysical Research Letters n. 23. (2011) Bromoform in the tropical boundary layer of the Maritime Continent during OP3, Atmospheric Chemistry and Physics n. 2, pp. 529–542. (2011) In search of an ice core signal to differentiate between source-driven and sink-driven changes in atmospheric methane, Journal of Geophysical Research: Atmospheres n. D5. (2011) Ozone Depletion and Climate Change, The Chemical Element: Chemistry's Contribution to Our Global Future. (2011) The impact of local surface changes in Borneo on atmospheric composition at wider spatial scales: coastal processes, land-use change and air quality, Philosophical Transactions of the Royal Society of London B: Biological Sciences n. 1582, pp. 3210–3224. 2010 (2010) Overview: oxidant and particle photochemical processes above a south-east Asian tropical rainforest (the OP3 project): introduction, rationale, location characteristics and tools, Atmospheric Chemistry & Physics, pp. 169–199. (2010) Corrigendum to" Overview: oxidant and particle photochemical processes above a south-east Asian tropical rainforest (the OP3 project): introduction, rationale, location characteristics and tools" published in Atmos. Chem. Phys., 10, 169--199, 2010, Atmospheric Chemistry and Physics n. 2, pp. 563–563. (2010) Impact of West African Monsoon convective transport and lightning NO x production upon the upper tropospheric composition: a multi-model study, Atmospheric Chemistry and Physics n. 12, pp. 5719–5738. (2010) Interannual variability of tropospheric composition: the influence of changes in emissions, meteorology and clouds, Atmospheric Chemistry and Physics n. 5, pp. 2491–2506. (2010) NOx and O3 above a tropical rainforest: an analysis with a global and box model, Atmos. Chem. Phys, pp. 10607–10620. 2009 (2009) Box and Global Modelling for the OP3 field campaign, EGU General Assembly Conference Abstracts, pp. 8924. (2009) Upgrading photolysis in the p-TOMCAT CTM: model evaluation and assessment of the role of clouds., Geoscientific Model Development n. 1, pp. 59–72. (2009) Clouds, photolysis and regional tropospheric ozone budgets., Atmospheric Chemistry and Physics n. 21, pp. 8235–8246. 2008 (2008) Integration and Co-Development of the MCM and IUPAC Databases: Providing Kinetic Data and Mechanisms to the Atmospheric Community, AGU Fall Meeting Abstracts. (2008) Observations of an atmospheric chemical equator and its implications for the tropical warm pool region, Journal of Geophysical Research: Atmospheres n. D20. 2007 (2007) An overview of snow photochemistry: evidence, mechanisms and impacts, Atmospheric Chemistry and Physics n. 16, pp. 4329–4373. (2007) Forest fire plumes over the North Atlantic: p-TOMCAT model simulations with aircraft and satellite measurements from the ITOP/ICARTT Campaign, Journal of Geophysical Research: Atmospheres n. D10. 2006 (2006) Global modeling of biogenic bromocarbons, Journal of Geophysical Research: Atmospheres n. D24. 2005 (2005) Generation of low particle numbers at the edge of the polar vortex, Environmental Modelling & Software n. 10, pp. 1273–1287. (2005) Comparison and visualisation of high-resolution transport modelling with aircraft measurements, Atmospheric Science Letters n. 3, pp. 164–170. (2005) The 2002 split ozone hole--the wave of the century?, Weather n. 1, pp. 15–18. (2005) Tropospheric bromine chemistry and its impacts on ozone: A model study, Journal of Geophysical Research: Atmospheres n. D23. 2004 (2004) Global Modelling of NOx emissions from snow, AGU Fall Meeting Abstracts, pp. 0048. 2002 (2002) First Results From A Comprehensive Stratopsheric Chemistry Using Asad In The Unified Model, EGS General Assembly Conference Abstracts. (2002) A new Chemical Lagrangian Model of the Stratosphere (CLaMS) 2. Formulation of chemistry scheme and initialization, Journal of Geophysical Research: Atmospheres n. D15. 2001 (2001) Comparison of cross-tropopause transport and ozone in the upper troposphere and lower stratosphere region, Journal of Geophysical Research: Atmospheres n. D10, pp. 10205–10221. 2000 (2000) IMPACT: an implicit time integration scheme for chemical species and families, Annales Geophysicae n. 3, pp. 337–346. 1999 (1999) Modelling NO x from lightning and its impact on global chemical fields, Atmospheric Environment n. 27, pp. 4477–4493. (1999) Quantification of filaments penetrating the subtropical barrier, Journal of Geophysical Research: Atmospheres n. D24, pp. 31275–31286. 1998 (1998) A Study of Ozone Laminae Using Diabatic Trajectories, Contour Advection and Photochemical Trajectory Model Simulations., Journal of Atmospheric Chemistry n. 1, pp. 187–207. 1997 (1997) The ASAD atmospheric chemistry integration package and chemical reaction database, Computer Physics Communications n. 2, pp. 197–215. (1997) Three-dimensional chemical forecasting: A methodology, Journal of Geophysical Research: Atmospheres n. D3, pp. 3905–3919. 1996 (1996) The UK Universities global atmospheric modelling project, WORLD METEOROLOGICAL ORGANIZATION-PUBLICATIONS-WMO TD, pp. 123–125. 1995 (1995) Modelling the global sources and sinks of radiatively active gases, Phil. Trans. R. Soc. Lond. A n. 1696, pp. 397–411. 1994 (1994) A case study in forecasting the stratospheric vortex during EASOE, Geophysical research letters n. 13, pp. 1451–1454. (1994) Accuracy of the isentropic trajectories calculated for the EASOE campaign, Geophysical research letters n. 13, pp. 1199–1202. (1994) A three-dimensional model study of nitrogen oxides in the stratosphere, Quarterly Journal of the Royal Meteorological Society n. 516, pp. 453–482. (1994) Some case studies of chlorine activation during the EASOE campaign, Geophysical research letters n. 13, pp. 1431–1434. (1994) Visualizing the evolution of the stratospheric polar vortex in January 1992, Geophysical research letters n. 13, pp. 1455–1458. (1994) Three dimensional modelling of chlorine activation in the Arctic stratosphere, Geophysical research letters n. 13, pp. 1471–1474. 1993 (1993) A three-dimensional model study of chemistry in the lower stratosphere, Advances in Space Research n. 1, pp. 331–337. 1992 (1992) ECMWF products in the European Arctic Stratospheric Ozone Experiment, Proceedings ECMWF Annual Seminar on Validation of models over Europe. (1992) Ozone loss in Antarctica: The implications for global change, Phil. Trans. R. Soc. Lond. B n. 1285, pp. 219–226. 1991 (1991) The application of the ICL DAP to finite element meteorological modelling, Computer modelling in the environmental sciences: based on the proceedings of a conference organized by the National Environment Research Council in association with the Environmental Mathematics Group of the Institute of Mathematics and Its Applications and held at the British Geological Survey headquarters at Keyworth in April 1990, pp. 225. 1990 (1990) Meteorological modelling on the ICL distributed array processor and other parallel computers. 1988 (1988) A spectral meteorological model on the ICL DAP, Parallel Computing n. 1, pp. 121–126.