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Estimating emissions of HCFC-22 and CFC-11 in China by atmospheric observations and inverse modeling

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Abstract

This paper presents the estimation of Chinese emissions of HCFC-22 and CFC-11 in 2009 by an inverse modeling method based on in-situ measurement data from the Shangdianzi Global Atmosphere Watch (GAW) Regional Station (SDZ) and atmospheric transport simulations. After inversion (a-posteriori) estimates of the Chinese emissions in 2009 increased by 6.6% for HCFC-22 from 91.7 (± 83.6) to 98.3 (± 47.4) kt/yr and by 22.5% for CFC-11 from 13 (±12.6) to 15.8 (±7.2) kt/yr compared to an a-priori emission. While the model simulation with a-priori emissions already captured the main features of the observed variability at the measurement site, the model performance (in terms of correlation and mean-square-error) improved using a-posteriori emissions. The inversion reduced the root-mean-square (RMS) error by 4% and 10% for HCFC-22 and CFC-11, respectively.

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Correspondence to XingQin An.

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An, X., Henne, S., Yao, B. et al. Estimating emissions of HCFC-22 and CFC-11 in China by atmospheric observations and inverse modeling. Sci. China Chem. 55, 2233–2241 (2012). https://doi.org/10.1007/s11426-012-4624-8

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  • DOI: https://doi.org/10.1007/s11426-012-4624-8

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