CICERO - Center for International Climate Research
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Biophysical and economic limits to negative CO2 emissions

Patrick Smith, Steven J Davis, Felix Creutzig, Sabine Fuss, Jan Minx, Benoit Gabrielle, Etsushi Kato, Robert B Jackson, Annette Cowie, Elmar Kriegler, Detlef P. van Vuuren, Joeri Rogelj, Philippe Ciais, Jennifer Milne, Josep G. Canadell, David McCollum, Glen Peters, Robbie Andrew, Volker Krey, Gyami Shrestha, Pierre Friedlingstein, Thomas Gasser, Arnulf Grubler, Wolfrang K. Heidug, Matthias Jonas, Chris D. Jones, Florian Kraxner, Emma Littleton, Jason Lowe, Josè Roberto Moreira, Nebojsa Nakicenovic, Michael Obersteiner, Anand Patwardhan, Mathis L. Rogner, E Rubin, Ayyoob Sharifi, Asbjørn Torvanger, Yyoshiki Yamagata, Jae Edmonds, Cho Yongsung

To have a >50% chance of limiting warming below 2 °C, most recent scenarios from integrated assessment models (IAMs) require large-scale deployment of negative emissions technologies (NETs). These are technologies that result in the net removal of greenhouse gases from the atmosphere. We quantify potential global impacts of the different NETs on various factors (such as land, greenhouse gas emissions, water, albedo, nutrients and energy) to determine the biophysical limits to, and economic costs of, their widespread application. Resource implications vary between technologies and need to be satisfactorily addressed if NETs are to have a significant role in achieving climate goals.

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