Fig. 2From: Near-real-time estimation of fossil fuel CO2 emissions from China based on atmospheric observations on Hateruma and Yonaguni Islands, JapanTime series of (a) atmospheric CO2 and (b) CH4 hourly mole fractions. The data obtained at YON (gray lines) and HAT (red lines) during the periods from December 15, 2019, to April 15, 2020, and from December 15, 2020, to April 15, 2021, are depicted. The simulated CO2 and CH4 for HAT are plotted as blue lines (see text)Back to article page