title: Potential for reducing air-pollutants while achieving 2 °C global temperature change limit target.
abstract: This study analyzes the potential to reduce air pollutants while achieving the 2 °C global temperature change limit target above pre-industrial levels, by using the bottom-up optimization model, AIM/Enduse[Global]. This study focuses on; 1) estimating mitigation potentials and costs for achieving 2 °C, 2.5 °C, and 3 °C target scenarios, 2) assessing co-benefits of reducing air pollutants such as NOx, SO2, BC, PM, and 3) analyzing features of sectoral attributions in Annex I and Non-Annex I groups of countries. The carbon tax scenario at 50 US$/tCO2-eq in 2050 can reduce GHG emissions more than the 3 °C target scenario, but a higher carbon price around 400 US$/tCO2-eq in 2050 is required to achieve the 2 °C target scenario. However, there is also a co-benefit of large reduction potential of air pollutants, in the range of 60-80% reductions in 2050 from the reference scenario while achieving the 2 °C target.
authors.affiliation: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan. Electronic address: hanaoka@nies.go.jp.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Hanaoka
authors.affiliation: Musashino University, 3-3-3 Ariake, Koutou, Tokyo 135-8181, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Akashi
authors.affiliation: Mizuho Information and Research Institute, 2-3 Kanda Nishiki Chou, Chiyoda, Tokyo 101-8443, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Fujiwara
authors.affiliation: Mizuho Information and Research Institute, 2-3 Kanda Nishiki Chou, Chiyoda, Tokyo 101-8443, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Motoki
authors.affiliation: Mizuho Information and Research Institute, 2-3 Kanda Nishiki Chou, Chiyoda, Tokyo 101-8443, Japan.
authors.forename: Go
authors.initials: G
authors.lastname: Hibino
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D057231:Climate Change; D058735:Environmental Policy; D052918:Environmental Restoration and Remediation / Q000191:economics / Q000379:methods*; D008962:Models, Theoretical; D013696:Temperature
chemical_list: D000393:Air Pollutants
keywords: Air-pollutants reductions; Bottom-up approach; GHG reductions; Two degree global temperature change limit target