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Clean air policies are key for successfully mitigating Arctic warming

Knut von Salzen 1, * Cynthia H. Whaley 1 Susan C. Anenberg 2 Rita van Dingenen 3 Zbigniew Klimont 4 Mark G. Flanner 5 Rashed Mahmood 6, 7 Stephen R. Arnold 8 Stephen Beagley 9 Rong-You Chien 10 Jesper H. Christensen 11, 12 Sabine Eckhardt 13 Annica M. L. Ekman 14, 15 Nikolaos Evangeliou 13 Greg Faluvegi 16, 17 Joshua S. Fu 10 Michael Gauss 18 Wanmin Gong 9 Jens L. Hjorth 11 Ulas Im 11, 12 Srinath Krishnan 15, 19 Kaarle Kupiainen 20 Thomas Kühn 21, 22 Joakim Langner 23 Kathy S. Law 24 Louis Marelle 24 Dirk Olivié 18 Tatsuo Onishi 24 Naga Oshima 25 Ville-Veikko Paunu 26 Yiran Peng 27 David Plummer 1 Luca Pozzoli 28, 3 Shilpa Rao 29 Jean-Christophe Raut 24 Maria Sand 19 Julia Schmale 30 Michael Sigmond 1 Manu A. Thomas 23 Kostas Tsigaridis 16, 17 Svetlana Tsyro 18 Steven T. Turnock 31, 8 Minqi Wang 27 Barbara Winter 1 
* Corresponding author
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : A tighter integration of modeling frameworks for climate and air quality is urgently needed to assess the impacts of clean air policies on future Arctic and global climate. We combined a new model emulator and comprehensive emissions scenarios for air pollutants and greenhouse gases to assess climate and human health co-benefits of emissions reductions. Fossil fuel use is projected to rapidly decline in an increasingly sustainable world, resulting in far-reaching air quality benefits. Despite human health benefits, reductions in sulfur emissions in a more sustainable world could enhance Arctic warming by 0.8 °C in 2050 relative to the 1995-2014, thereby offsetting climate benefits of greenhouse gas reductions. Targeted and technically feasible emissions reduction opportunities exist for achieving simultaneous climate and human health co-benefits. It would be particularly beneficial to unlock a newly identified mitigation potential for carbon particulate matter, yielding Arctic climate benefits equivalent to those from carbon dioxide reductions by 2050.
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Submitted on : Friday, October 21, 2022 - 8:06:38 PM
Last modification on : Thursday, October 27, 2022 - 3:22:56 AM


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Knut von Salzen, Cynthia H. Whaley, Susan C. Anenberg, Rita van Dingenen, Zbigniew Klimont, et al.. Clean air policies are key for successfully mitigating Arctic warming. Communications Earth & Environment, 2022, 3, pp.222. ⟨10.1038/s43247-022-00555-x⟩. ⟨insu-03825049⟩



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