The Worldwide C3S CORDEX Grand Ensemble: A Major Contribution to Assess Regional Climate Change in the IPCC AR6 Atlas

Author:

Diez-Sierra Javier11,Iturbide Maialen22,Gutiérrez José M.2,Fernández Jesús2,Milovac Josipa2,Cofiño Antonio S.2,Cimadevilla Ezequiel33,Nikulin Grigory44,Levavasseur Guillaume55,Kjellström Erik4,Bülow Katharina66,Horányi András77,Brookshaw Anca7,García-Díez Markel88,Pérez Antonio8,Baño-Medina Jorge2,Ahrens Bodo99,Alias Antoinette1010,Ashfaq Moetasim1111,Bukovsky Melissa1212,Buonomo Erasmo1313,Caluwaerts Steven1414,Chou Sin Chan1515,Christensen Ole B.1616,Ciarlò James M.1717,Coppola Erika17,Corre Lola10,Demory Marie-Estelle1818,Djurdjevic Vladimir1919,Evans Jason P.2020,Fealy Rowan2121,Feldmann Hendrik2222,Jacob Daniela6,Jayanarayanan Sanjay2323,Katzfey Jack2424,Keuler Klaus2525,Kittel Christoph2626,Kurnaz Mehmet Levent2727,Laprise René2828,Lionello Piero2929,McGinnis Seth12,Mercogliano Paola3030,Nabat Pierre10,Önol Barış3131,Ozturk Tugba3232,Panitz Hans-Jürgen22,Paquin Dominique3333,Pieczka Ildikó3434,Raffaele Francesca17,Remedio Armelle Reca6,Scinocca John3535,Sevault Florence10,Somot Samuel10,Steger Christian3636,Tangang Fredolin3737,Teichmann Claas6,Termonia Piet3838,Thatcher Marcus24,Torma Csaba34,van Meijgaard Erik3939,Vautard Robert5,Warrach-Sagi Kirsten4040,Winger Katja28,Zittis George4141

Affiliation:

1. Instituto de Física de Cantabria, CSIC–Universidad de Cantabria, and Department of Applied Mathematics and Computer Science, Universidad de Cantabria, Santander, Spain;

2. Instituto de Física de Cantabria, CSIC–Universidad de Cantabria, Santander, Spain;

3. Department of Applied Mathematics and Computer Science, Universidad de Cantabria, Santander, Spain;

4. Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden;

5. Institut Pierre-Simon Laplace, Sorbonne Université/CNRS, Paris, France;

6. Climate Service Center Germany (GERICS), Helmholtz-Zentrum Hereon, Hamburg, Germany;

7. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom;

8. Predictia Intelligent Data Solutions SL, Santander, Spain;

9. Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt, Germany;

10. CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France;

11. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee;

12. National Center for Atmospheric Research, Boulder, Colorado;

13. Met Office, Exeter, United Kingdom;

14. Department of Physics and Astronomy, Ghent University, Ghent, Belgium;

15. National Institute for Space Research (INPE), São Paulo, Brazil;

16. National Centre for Climate Research, Danish Meteorological Institute, Copenhagen, Denmark;

17. Abdus Salam International Centre for Theoretical Physics, Trieste, Italy;

18. Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland;

19. Faculty of Physics, University of Belgrade, Belgrade, Serbia;

20. Climate Change Research Centre, University of New South Wales, Sydney, New South Wales, Australia;

21. ICARUS, Maynooth University, Maynooth, Kildare, Ireland;

22. Institute for Meteorology and Climate Research (IMK-TRO), Karlsruhe Institute of Technology, Karlsruhe, Germany;

23. Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, India;

24. Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation, Aspendale, Victoria, Australia;

25. Brandenburg University of Technology, Cottbus–Senftenberg, Cottbus, Germany;

26. Department of Geography, UR SPHERES, University of Liège, Liège, Belgium;

27. Center for Climate Change and Policy Studies, Bogazici University, Istanbul, Turkey;

28. Centre ESCER, Earth and Atmospheric Sciences Department, Université du Québec à Montréal, Montreal, Quebec, Canada;

29. Fondazione Centro Euromediterraneo sui Cambiamenti Climatici, Lecce, Italy;

30. Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Caserta, Italy;

31. Aeronautics and Astronautics Faculty, Meteorological Engineering, Istanbul Technical University, Istanbul, Turkey;

32. Department of Physics, Faculty of Engineering and Natural Sciences, Isik University, Istanbul, Turkey;

33. Ouranos, Montreal, Quebec, Canada;

34. Institute of Geography and Earth Sciences, Department of Meteorology, Eötvös Loránd University (ELTE), Budapest, Hungary;

35. Canadian Centre for Climate Modelling and Analysis, Victoria, British Columbia, Canada;

36. Deutscher Wetterdienst, Offenbach, Germany;

37. Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;

38. Royal Meteorological Institute, Brussels, Belgium;

39. Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands;

40. Institute of Physics and Meteorology, University of Hohenheim, Stuttgart, Germany;

41. Climate and Atmosphere Research Center, Cyprus Institute, Nicosia, Cyprus

Abstract

Abstract The collaboration between the Coordinated Regional Climate Downscaling Experiment (CORDEX) and the Earth System Grid Federation (ESGF) provides open access to an unprecedented ensemble of regional climate model (RCM) simulations, across the 14 CORDEX continental-scale domains, with global coverage. These simulations have been used as a new line of evidence to assess regional climate projections in the latest contribution of the Working Group I (WGI) to the IPCC Sixth Assessment Report (AR6), particularly in the regional chapters and the Atlas. Here, we present the work done in the framework of the Copernicus Climate Change Service (C3S) to ­assemble a consistent worldwide CORDEX grand ensemble, aligned with the deadlines and ­activities of IPCC AR6. This work addressed the uneven and heterogeneous availability of CORDEX ESGF data by supporting publication in CORDEX domains with few archived simulations and performing quality control. It also addressed the lack of comprehensive documentation by compiling information from all contributing regional models, allowing for an informed use of data. In addition to presenting the worldwide CORDEX dataset, we assess here its consistency for precipitation and temperature by comparing climate change signals in regions with overlapping CORDEX domains, obtaining overall coincident regional climate change signals. The C3S CORDEX dataset has been used for the assessment of regional climate change in the IPCC AR6 (and for the interactive Atlas) and is available through the Copernicus Climate Data Store (CDS).

Publisher

American Meteorological Society

Subject

Atmospheric Science

Reference58 articles.

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5. Christensen, O. B., W. J. Gutowski, G. Nikulin, and S. Legutke, 2020: CORDEX archive design. CORDEX Doc., 23 pp., https://is-enes-data.github.io/cordex_archive_specifications.pdf.

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