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Improving reduced complexity model assessment and usability

Reduced complexity climate models are useful tools with practical policy applications, yet evaluation of their performance and application is nascent. We call for stakeholder-driven development and assessment to address user needs, including provision of open-source code and guidance to inform model selection and application.

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  1. 1.

    IPCC Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) (Cambridge Univ. Press, 2013).

  2. 2.

    Thompson, T. M. WIREs Clim. Change 9, e532 (2018).

    Article  Google Scholar 

  3. 3.

    National Academies of Sciences, Engineering, and Medicine. Valuing Climate Damages: Updating Estimation of the Social Cost of Carbon Dioxide (The National Academies Press, 2017).

  4. 4.

    Shindell, D. T. Nat. Clim. Change 4, 274–277 (2014).

    CAS  Article  Google Scholar 

  5. 5.

    Smith, S. J., Wigley, T. M. L., Meinshausen, M. & Rogelj, J. Nat. Clim. Change 4, 741–742 (2014).

    Article  Google Scholar 

  6. 6.

    Sand, M. et al. Nat. Clim. Change 6, 286–289 (2016).

    CAS  Article  Google Scholar 

  7. 7.

    Stjern, C. W. et al. J. Geophys. Res. Atmos. 122, 11462–11481 (2017).

    Article  Google Scholar 

  8. 8.

    Nauels, A., Meinshausen, M., Mengel, M., Lorbacher, K. & Wigley, T. M. L. Geosci. Model Dev. 10, 2495–2524 (2017).

    Article  Google Scholar 

  9. 9.

    Millar, R. J., Nicholls, Z. R., Friedlingstein, P. & Allen, M. R. Atmos. Chem. Phys. 17, 7213–7228 (2017).

    CAS  Article  Google Scholar 

  10. 10.

    Nicholls, Z. R. J. et al. Geosci. Model Dev. 13, 5175–5190 (2020).

    Article  Google Scholar 

  11. 11.

    Joos, F. et al. Atmos. Chem. Phys. 13, 2793–2825 (2013).

    Article  Google Scholar 

  12. 12.

    van Vuuren, D. P. et al. Climatic Change 104, 255–285 (2011).

    Article  Google Scholar 

  13. 13.

    Schwarber, A. K., Smith, S. J., Hartin, C. A., Vega-Westhoff, B. A. & Sriver, R. Earth Syst. Dyn. 10, 729–739 (2019).

    Article  Google Scholar 

  14. 14.

    IPCC Special Report on Global Warming of 1.5 °C (eds Masson-Delmotte, V. et al.) (WMO, 2018).

  15. 15.

    Hartin, C. A., Patel, P., Schwarber, A., Link, R. P. & Bond-Lamberty, B. P. Geosci. Model Dev. 8, 939–955 (2015).

    Article  Google Scholar 

  16. 16.

    Meinshausen, M. et al. Nature 458, 1158–1162 (2009).

    CAS  Article  Google Scholar 

  17. 17.

    Goodwin, P. Clim. Dyn. 47, 2219–2233 (2016).

    Article  Google Scholar 

  18. 18.

    Libardoni, A. G., Forest, C. E., Sokolov, A. P. & Monier, E. Adv. Stat. Climatol. Meteorol. Oceanogr. 4, 19–36 (2018).

    Article  Google Scholar 

  19. 19.

    Huppmann, D. et al. IAMC 1.5°C Scenario Explorer and Data hosted by IIASA (IIASA and IAMC, 2019).

  20. 20.

    Gidden, M. J. & Huppmann, D. J. Open Source Softw. 4, 1095 (2019).

    Article  Google Scholar 

  21. 21.

    Collins, M. et al. in IPCC Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 1029–1136 (Cambridge Univ. Press, 2013).

  22. 22.

    Smith, C. J. et al. Geosci. Model Dev. 11, 2273–2297 (2018).

    CAS  Article  Google Scholar 

  23. 23.

    Deser, C., Phillips, A., Bourdette, V. & Teng, H. Clim. Dyn. 38, 527–546 (2012).

    Article  Google Scholar 

  24. 24.

    Meinshausen, M., Raper, S. C. B. & Wigley, T. M. L. Atmos. Chem. Phys. 11, 1417–1456 (2011).

    CAS  Article  Google Scholar 

  25. 25.

    Hulme, M., Raper, S. C. & Wigley, T. M. Energ. Policy 23, 347–355 (1995).

    Article  Google Scholar 

  26. 26.

    Final Rule for Model Year 2012 - 2016 Light-Duty Vehicle Greenhouse Gas Emission Standards and Corporate Average Fuel Economy Standards (US EPA, 2016);

  27. 27.

    Palmer, M. D., Harris, G. R. & Gregory, J. M. Environ. Res. Lett. 13, 084003 (2018).

    Article  Google Scholar 

  28. 28.

    Rogelj, J. et al. Nat. Clim. Change 6, 245–252 (2016).

    Article  Google Scholar 

  29. 29.

    Meinshausen, M. et al. Climatic Change 109, 213 (2011).

    CAS  Article  Google Scholar 

  30. 30.

    Soldatenko, S. & Colman, R. Tellus A 71, 1554421 (2019).

    Article  Google Scholar 

  31. 31.

    Lewis, N. & Curry, J. A. Clim. Dyn. 45, 1009–1023 (2015).

    Article  Google Scholar 

  32. 32.

    Rogelj, J., Meinshausen, M. & Knutti, R. Nat. Clim. Change 2, 248–253 (2012).

    Article  Google Scholar 

  33. 33.

    Fawcett, A. A. et al. Science 350, 1168–1169 (2015).

    CAS  Article  Google Scholar 

  34. 34.

    Riahi, K. et al. Glob. Environ. Change 42, 153–168 (2017).

    Article  Google Scholar 

  35. 35.

    Nordhaus, W. Am. Econ. J. Econ. Policy 10, 333–360 (2018).

    Article  Google Scholar 

  36. 36.

    Michaelis, P. & Wirths, H. Environ. Econ. Policy Stud. 22, 555–584 (2020).

    Article  Google Scholar 

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The views expressed in this Comment are those of the authors and do not necessarily represent the views or policies of the US Environmental Protection Agency. The US Environmental Protection Agency Climate Change Division provided support through contract EP-BPA-18-H-0011 and order number 68HE0H18F0184 with Abt Associates.

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Correspondence to Marcus C. Sarofim.

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Sarofim, M.C., Smith, J.B., St. Juliana, A. et al. Improving reduced complexity model assessment and usability. Nat. Clim. Chang. 11, 1–3 (2021).

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