Paper published on CH3Br emissions in China

(Oct 16, 2024) “Unexplained high and persistent methyl bromide emissions in China” published in Nature Communications by Hu et al.

This paper by Xiaoyi Hu, Bo Yao, Jens Mühle, Robert Rhew, Paul Fraser, Simon O’Doherty, Ronald Prinn & Xuekun Fang presents a remarkable dataset of CH₃Br concentrations from a network of stations across China. The observational data combined with inversion (top-down) techniques reveal large and unexplained emissions of methyl bromide from the eastern provinces of China. The top down emission estimates exceed the bottom up estimates by 5.5 Gg/yr, and these are currently unexplained. They may represent unreported or previously unknown emissions from anthropogenic sources.