How accurate are estimates of China's emissions of carbon dioxide?: Recent CO2 trends, spatial distributions, and uncertainties. 
A China Project study (Zhao, Nielsen, and McElroy 2012) makes the first "bottom-up" estimates of China's annual CO2 emissions, for 2005-2009. Click here for the press release. Led by then-postdoc ZHAO Yu (now at Nanjing University), the research capitalizes on instrumental measurements of CO2 in smokestacks and of pollutants in the air by ground stations and satellites (Zhao et al. 2012b, 2011a,b,c, 2010, 2009; see publications). The study also quantifies the uncertainties of Chinese CO2 emissions, for the first time using rigorous statistical methods, yielding a 95% confidence interval of -9%, +11% for 2005. The research appears in Atmospheric Environment.