One of the original papers reporting Chinese CFC emissions is here https://www.nature.com/articles/s41586-018-0106-2.epdf?referrer_access_token=e3U8HfFs2Y70qFt

One of the original papers reporting Chinese CFC emissions is here https://www.nature.com/articles/s41586-018-0106-2.epdf?referrer_access_token=e3U8HfFs2Y70qFtak9n0wdRgN0jAjWel9jnR3ZoTv0ObYgkb7dfDTYXtPv1emzlBU-NXtAeuSd3TWCDDbIhzRhCB77Vx-ChS6XuK_3FAPTyvZh3Or4IVbdZGyqs39BYwiyrG1Za6cdpTYXfMrSZ0g2-Is2bwHDmvJWZV76zKvZ0feu_C8oyDkT1ez-Xm0PCPATmVwsJ4pMOgEaEpDG-ipI7CKGWdQkUDF1zgwaOpprE%3D&tracking_referrer=www.bbc.com https://www.nature.com/articles/s41586-018-0106-2.epdf?refer... A later one (2019) is https://eos.org/articles/banned-cfc-emissions-tracked-to-eastern-china https://eos.org/articles/banned-cfc-emissions-tracked-to-eas... Both use very sparse ground based measurements, which makes good emissions localization hard. There are also confirmations from satellite measurements.