2018/09/29 by Mark F. Lunt, Sunyoung Park, S. Li +16 · 2 citations
Earth and Planetary Sciences · Environmental Science · #Atmospheric Ozone and Climate #Atmospheric and Environmental Gas Dynamics #Atmospheric chemistry and aerosols
paper · pdf · doi:10.1029/2018gl079500
openalex publication_date 2018/09/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
Abstract Carbon tetrachloride (CCl 4 ) is an ozone‐depleting substance, accounting for about 10% of the chlorine in the troposphere. Under the terms of the Montreal Protocol, its production for dispersive uses was banned from 2010. In this work we show that, despite the controls on production being introduced, CCl 4 emissions from the eastern part of China did not decline between 2009 and 2016. This finding is in contrast to a recent bottom‐up estimate, which predicted a significant decrease in emissions after the introduction of production controls. We find eastern Asian emissions of CCl 4 to be 16 (9–24) Gg/year on average between 2009 and 2016, with the primary source regions being in eastern China. The spatial distribution of emissions that we derive suggests that the source distribution of CCl 4 in China changed during the 8‐year study period, indicating a new source or sources of emissions from China's Shandong province after 2012.