历年二氧化碳浓度数据

[1] Pieler T.Trends in atmospheric carbon dioxide-Global. http://www. esrl. noaa. gov/gmd/ccgg/trends/ . 2009

[2] Etheridge D M,Steele L P, el al.Historical CO2record derived from a spline fit （20 year cutoff） of the Law Dome DE08 and DE08-2 ice cores. http://cdiac. ornl. gov/ftp/trends/co2/lawdome. smoothed. yr20 . 1998

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#Contact:PieterTans(3034976678;********************)

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# File Creation: Wed Jun 5 12:05:50 2013

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# Use of these data implies an agreement to reciprocate.

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# Modelers are encouraged to make available to the community,

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-------------------------------------------------------------------- #

#

# See /gmd/ccgg/trends/ for additional details.

#

# Data from March 1958 through April 1974 have been obtained by C. David Keeling

# of the Scripps Institution of Oceanography (SIO) and were obtained from the

# Scripps website ().

#

# The estimated uncertainty in the annual mean is the standard deviation # of the differences of annual mean values determined independently by # NOAA/ESRL and the Scripps Institution of Oceanography.

#

# NOTE: In general, the data presented for the last year are subject to change,

# depending on recalibration of the reference gas mixtures used, and other quality

# control procedures. Occasionally, earlier years may also be changed for the same

# reasons. Usually these changes are minor.

#

# CO2 expressed as a mole fraction in dry air, micromol/mol, abbreviated as ppm

#

# year mean unc

1959 315.97 0.12

1960 316.91 0.12

1961 317.64 0.12

1962 318.45 0.12

1963 318.99 0.12

1964 319.62 0.12

1965 320.04 0.12

1966 321.38 0.12

1967 322.16 0.12

1968 323.04 0.12

1969 324.62 0.12

1970 325.68 0.12

1971 326.32 0.12

1972 327.45 0.12

1973 329.68 0.12

1974 330.18 0.12