Fig. 2: Global emissions and emissions from China.
From: Rapid increase in dichloromethane emissions from China inferred through atmospheric observations
a Derived global emissions of CH2Cl2 in 2011–2019 and uncertainties (blue line and shading), and emissions from China (top-down, inversion based) and uncertainties (red line and shading). Global emissions derived using the 12-box model with NOAA data1 (yellow line), and by TOMCAT (a global 3D model) with data from multiple sources21(black line), are shown in the plot for comparison. All uncertainties are the 68% interval. b Comparison of top-down emissions from China derived in this study (red line and shading) to previous bottom-up (inventory based) time series17 (time period overlap 2011–2016, black line), and other estimates for specific years4,29,68,69,70. The result from Montzka et al.29 is the regional CH2Cl2 emissions for East Asia. ISC means “interspecies correlation” method. A new bottom-up analysis for 2013–2019 (blue line and shading in b) is estimated using newly obtained consumption and production data from CCAIA33 (data shown in Supplementary Fig. 4a). Bottom-up results for individual sectors are shown in Supplementary Fig. 4b. All emissions results estimated in this study can be found in Supplementary Table 5.
