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The representative concentration pathways: an overview |
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| Authors: | Detlef P van Vuuren Jae Edmonds Mikiko Kainuma Keywan Riahi Allison Thomson Kathy Hibbard George C Hurtt Tom Kram Volker Krey Jean-Francois Lamarque Toshihiko Masui Malte Meinshausen Nebojsa Nakicenovic Steven J Smith Steven K Rose |
| Institution: | 1. PBL Netherlands Environmental Assessment Agency, PO Box 303, 3720, AH Bilthoven, The Netherlands 11. Utrecht University, Utrecht, The Netherlands 2. Joint Global Change Research Institute, Pacific Northwest National Laboratory and the University of Maryland, 5825 University Research Court, College Park, MD, 20740, USA 3. National Institute for Environmental Studies (NIES), Tsukuba, Japan 4. International Institute for Applied System Analysis, Schlossplatz 1, A2361, Laxenburg, Austria 5. Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory and the University of Maryland, 3200 Q Avenue K9-34, Richland, WA, 99354, USA 10. Department of Geography, University of Maryland, 2181 LeFrak Hall, College Park, MD, 20742, USA 6. Atmospheric Chemistry Division, National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO, 80301, USA 7. Potsdam Institute for Climate Impact Research (PIK), PO Box 601203, Telegrafenberg A31, 14412, Potsdam, Germany 8. Vienna University of Technology, Gusshausstrasse 25-29/37320, A1040, Vienna, Austria 9. Electric Power Research Institute, 3420 Hillview Avenue, Palo Alto, CA, USA |
| Abstract: | This paper summarizes the development process and main characteristics of the Representative Concentration Pathways (RCPs), a set of four new pathways developed for the climate modeling community as a basis for long-term and near-term modeling experiments. The four RCPs together span the range of year 2100 radiative forcing values found in the open literature, i.e. from 2.6 to 8.5 W/m2. The RCPs are the product of an innovative collaboration between integrated assessment modelers, climate modelers, terrestrial ecosystem modelers and emission inventory experts. The resulting product forms a comprehensive data set with high spatial and sectoral resolutions for the period extending to 2100. Land use and emissions of air pollutants and greenhouse gases are reported mostly at a 0.5?×?0.5 degree spatial resolution, with air pollutants also provided per sector (for well-mixed gases, a coarser resolution is used). The underlying integrated assessment model outputs for land use, atmospheric emissions and concentration data were harmonized across models and scenarios to ensure consistency with historical observations while preserving individual scenario trends. For most variables, the RCPs cover a wide range of the existing literature. The RCPs are supplemented with extensions (Extended Concentration Pathways, ECPs), which allow climate modeling experiments through the year 2300. The RCPs are an important development in climate research and provide a potential foundation for further research and assessment, including emissions mitigation and impact analysis. |
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