Mercury Benefits of Climate Policy in China: Addressing the Paris Agreement and the Minamata Convention Simultaneously.,Environmental Science & Technology

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Mercury Benefits of Climate Policy in China: Addressing the Paris Agreement and the Minamata Convention Simultaneously.
Environmental Science & Technology ( IF 11.4 ) Pub Date : 2020-01-03 , DOI: 10.1021/acs.est.9b06741
Kathleen M Mulvaney ₁ , Noelle E Selin _{1,

2} , Amanda Giang _{1,

3} , Marilena Muntean ₄ , Chiao-Ting Li ₅ , Da Zhang _{5,

6} , Hélène Angot ₁ , Colin P Thackray ₇ , Valerie J Karplus _{5,

8}

Affiliation

Institute for Data, Systems, and Society , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.
Department of Earth, Atmospheric, and Planetary Sciences , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.
Institute for Resources, Environment and Sustainability , University of British Columbia , Vancouver , British Columbia V6T 1Z4 , Canada.
European Commission, Joint Research Centre (JRC) , Directorate for Energy, Transport and Climate, Air and Climate Unit, Via E. Fermi 2749 , I-21027 , Ispra , Varese , Italy.
Joint Program on the Science and Policy of Global Change , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.
Institute for Energy, Economy, and Environment , Tsinghua University , Beijing 100084 , China.
Harvard John A. Paulson School of Engineering and Applied Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States.
Sloan School of Management , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.

National commitments under the Paris Agreement on climate change interact with other global environmental objectives, such as those of the Minamata Convention on Mercury. We assess how mercury emissions and deposition reductions from national climate policy in China under the Paris Agreement could contribute to the country's commitments under the Minamata Convention. We examine emissions under climate policy scenarios developed using a computable general equilibrium model of China's economy, end-of-pipe control scenarios that meet China's commitments under the Minamata Convention, and these policies in combination, and evaluate deposition using a global atmospheric transport model. We find climate policy in China can provide mercury benefits when implemented with Minamata policy, achieving in the year 2030 approximately 5% additional reduction in mercury emissions and deposition in China when climate policy achieves a 5% reduction per year in carbon intensity (CO2 emissions 9.7 Gt in 2030). This corresponds to 63 Mg additional mercury emissions reductions in 2030 when implemented with Minamata Convention policy, compared to Minamata policy implemented alone. Climate policy provides emissions reductions in sectors not considered under the Minamata Convention, such as residential combustion. This changes the combination of sectors that contribute to emissions reductions.

更新日期：2020-01-16

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