********************************************************************** *** Atmospheric CO2 concentrations (ppmv) derived from flask air *** *** samples collected at Cape Ferguson, Australia *** *** Source: L.P. Steele *** *** P.B. Krummel *** *** R. L. Langenfelds, *** *** Atmospheric, Research, Commonwealth Scientific, *** *** And Industrial Research Organisation, *** *** Aspendale, Victoria, *** *** Australia 3195 *** *** *** *** December 2002 *** *** *** ********************************************************************** Jan. Feb. Mar. Apr. May Jun. Jul Aug. Sep. Oct. Nov. Dec. Ann. Avg. 1991 353.12 353.14 354.52 355.6 355.1 355.13 1992 354.84 354.3 354.16 353.98 354.01 353.6 354.14 355.38 356.27 356.18 355.8 355.85 354.88 1993 355.27 354.84 354.62 354.37 354.61 355.37 356 355.71 355.82 356.12 356.04 357.51 355.52 1994 357.8 356.05 355.65 355.65 355.32 355.8 356.32 356.7 357.19 358.46 359.34 358.68 356.91 1995 358.43 358.19 358.01 358.48 358.97 359.1 358.36 358.38 359.45 359.9 360.25 360.57 359.01 1996 361.53 363.22 362.87 361.56 360.69 360.03 360.28 360.81 361 360.62 360.76 361.37 361.23 1997 361.08 360.94 360.87 361.05 362.61 362.22 360.48 362.05 363.9 363.7 363.46 363.98 362.2 1998 364.79 364.44 364.16 365.16 365.26 365.38 365.33 364.86 365.93 367.07 366.8 366.31 365.46 1999 365.76 365.66 365.64 364.7 364.37 365.29 365.79 366.08 366.49 366.55 366.8 366.97 365.84 2000 366.72 366.18 366 366.15 368.15 369.97 367.94 367.01 368.68 369.11 369.07 369.86 367.9 2001 368.59 366.92 367.82 368.11 366.93 367.59 369.29 370.05 370.2 370.45 371.48 371.13 369.05 Monthly values are expressed in parts per million (ppm) and reported in the WMO CO2 Mole Fraction Scale (Zhao et al., 1997, J. Geophys. Res. 102 , 5885-5894). Monthly values are calculated as the mean of the daily values from a smooth curve fit to the data using curve-fitting routines described by Thoning et. al., 1989, (J. Geophys. Res. 94, 8549-8565). Annual values are the arithmetic means of the 12 monthly values.