Currently, fossil fuel CO2 emissions (Cff) are estimated from compilations of fossil fuel economic statistics, reported by individual governments. Independent, objective methods for quantifying fossil fuel CO2 emissions are essential to accurate verification of these emissions. . It is of particular importance to quantify these emissions in developing nations such as China, where emissions are believed to be increasing rapidly, and economic information is outdated or inaccurate.
Atmospheric measurements of 14CO2 provide a direct constraint on Cff, because Cff contains zero-14C, while all other sources contain 14C concentrations close to ambient air.
AAPG support has allowed an initial 6-month (October 2004 – March 2005) time series of measurements from Tae-Ahn Peninsula, Korea. This site is directly downwind of the Northern China industrial region. Initial results show that 60% of the variability in CO2 concentration at this site is due to Cff, with the remaining variability due to biological carbon exchange (respiration and biomass burning).
To constrain Cff from China, these measurements from Korea will be compared with 14C measurements from Mt. Waliguan, China and Ulaan Uul, Mongolia, which are both upwind of Northern China. This will allow the magnitude of Cff to be determined.