# CO2 Atmospheric Concentration measured at Mauna Loa Observatory, Hawaii
#
# Data from March 1958 to April 1974 are from the Scripps Institution
# of Oceanography (SIO) and where obtained from the Carbon Dioxide
# Information Analysis Center (CDIAC).
#
# Contact:   Pieter Tans (303 497 6678; pieter.tans@noaa.gov)
# File Creation:  Sun Jun  3 02:55:19 2007
# URL: http://www.esrl.noaa.gov/gmd/ccgg/trends/co2_mm_mlo.dat
#
# --------------------------------------------------------------------
# USE OF NOAA/ESRL/GMD DATA
# 
# These data are made freely available to the public and the
# scientific community in the belief that their wide dissemination
# will lead to greater understanding and new scientific insights.
# The availability of these data does not constitute publication
# of the data.  NOAA relies on the ethics and integrity of the user to
# assure that GMD receives fair credit for their work.  If the data
# are obtained for potential use in a publication or presentation,
# GMD should be informed at the outset of the nature of this work.
# If the GMD data are essential to the work, or if an important
# result or conclusion depends on the GMD data, co-authorship may
# be appropriate.  This should be discussed at an early stage in
# the work.  Manuscripts using the GMD data should be sent to GMD
# for review before they are submitted for publication so we can
# insure that the quality and limitations of the data are accurately
# represented.
# 
# RECIPROCITY
# 
# Use of these data implies an agreement to reciprocate.
# Laboratories making similar measurements agree to make their
# own data available to the general public and to the scientific
# community in an equally complete and easily accessible form.
# Modelers are encouraged to make available to the community,
# upon request, their own tools used in the interpretation
# of the GMD data, namely well documented model code, transport
# fields, and additional information necessary for other
# scientists to repeat the work and to run modified versions.
# Model availability includes collaborative support for new
# users of the models.
# --------------------------------------------------------------------

# date | concentration (ppm) 
1958-03-01 315.71
1958-04-01 317.45
1958-05-01 317.50
1958-07-01 315.86
1958-08-01 314.93
1958-09-01 313.19
1958-11-01 313.34
1958-12-01 314.67
1959-01-01 315.58
1959-02-01 316.47
1959-03-01 316.65
1959-04-01 317.71
1959-05-01 318.29
1959-06-01 318.16
1959-07-01 316.55
1959-08-01 314.80
1959-09-01 313.84
1959-10-01 313.34
1959-11-01 314.81
1959-12-01 315.59
1960-01-01 316.43
1960-02-01 316.97
1960-03-01 317.58
1960-04-01 319.03
1960-05-01 320.03
1960-06-01 319.59
1960-07-01 318.18
1960-08-01 315.91
1960-09-01 314.16
1960-10-01 313.83
1960-11-01 315.00
1960-12-01 316.19
1961-01-01 316.89
1961-02-01 317.70
1961-03-01 318.54
1961-04-01 319.48
1961-05-01 320.58
1961-06-01 319.78
1961-07-01 318.58
1961-08-01 316.79
1961-09-01 314.99
1961-10-01 315.31
1961-11-01 316.10
1961-12-01 317.01
1962-01-01 317.94
1962-02-01 318.56
1962-03-01 319.69
1962-04-01 320.58
1962-05-01 321.01
1962-06-01 320.61
1962-07-01 319.61
1962-08-01 317.40
1962-09-01 316.26
1962-10-01 315.42
1962-11-01 316.69
1962-12-01 317.69
1963-01-01 318.74
1963-02-01 319.08
1963-03-01 319.86
1963-04-01 321.39
1963-05-01 322.24
1963-06-01 321.47
1963-07-01 319.74
1963-08-01 317.77
1963-09-01 316.21
1963-10-01 315.99
1963-11-01 317.07
1963-12-01 318.36
1964-01-01 319.57
1964-05-01 322.23
1964-06-01 321.89
1964-07-01 320.44
1964-08-01 318.70
1964-09-01 316.70
1964-10-01 316.87
1964-11-01 317.68
1964-12-01 318.71
1965-01-01 319.44
1965-02-01 320.44
1965-03-01 320.89
1965-04-01 322.13
1965-05-01 322.16
1965-06-01 321.87
1965-07-01 321.21
1965-08-01 318.87
1965-09-01 317.81
1965-10-01 317.30
1965-11-01 318.87
1965-12-01 319.42
1966-01-01 320.62
1966-02-01 321.59
1966-03-01 322.39
1966-04-01 323.70
1966-05-01 324.07
1966-06-01 323.75
1966-07-01 322.40
1966-08-01 320.37
1966-09-01 318.64
1966-10-01 318.10
1966-11-01 319.79
1966-12-01 321.03
1967-01-01 322.33
1967-02-01 322.50
1967-03-01 323.04
1967-04-01 324.42
1967-05-01 325.00
1967-06-01 324.09
1967-07-01 322.55
1967-08-01 320.92
1967-09-01 319.26
1967-10-01 319.39
1967-11-01 320.72
1967-12-01 321.96
1968-01-01 322.57
1968-02-01 323.15
1968-03-01 323.89
1968-04-01 325.02
1968-05-01 325.57
1968-06-01 325.36
1968-07-01 324.14
1968-08-01 322.11
1968-09-01 320.33
1968-10-01 320.25
1968-11-01 321.32
1968-12-01 322.90
1969-01-01 324.00
1969-02-01 324.42
1969-03-01 325.64
1969-04-01 326.66
1969-05-01 327.38
1969-06-01 326.70
1969-07-01 325.89
1969-08-01 323.67
1969-09-01 322.38
1969-10-01 321.78
1969-11-01 322.85
1969-12-01 324.12
1970-01-01 325.06
1970-02-01 325.98
1970-03-01 326.93
1970-04-01 328.13
1970-05-01 328.07
1970-06-01 327.66
1970-07-01 326.35
1970-08-01 324.69
1970-09-01 323.10
1970-10-01 323.07
1970-11-01 324.01
1970-12-01 325.13
1971-01-01 326.17
1971-02-01 326.68
1971-03-01 327.18
1971-04-01 327.78
1971-05-01 328.92
1971-06-01 328.57
1971-07-01 327.37
1971-08-01 325.43
1971-09-01 323.36
1971-10-01 323.56
1971-11-01 324.80
1971-12-01 326.01
1972-01-01 326.77
1972-02-01 327.63
1972-03-01 327.75
1972-04-01 329.72
1972-05-01 330.07
1972-06-01 329.09
1972-07-01 328.05
1972-08-01 326.32
1972-09-01 324.84
1972-10-01 325.20
1972-11-01 326.50
1972-12-01 327.55
1973-01-01 328.54
1973-02-01 329.56
1973-03-01 330.30
1973-04-01 331.50
1973-05-01 332.48
1973-06-01 332.07
1973-07-01 330.87
1973-08-01 329.31
1973-09-01 327.51
1973-10-01 327.18
1973-11-01 328.16
1973-12-01 328.64
1974-01-01 329.35
1974-02-01 330.71
1974-03-01 331.48
1974-04-01 332.65
1974-05-01 333.16
1974-06-01 332.06
1974-07-01 330.99
1974-08-01 329.17
1974-09-01 327.41
1974-10-01 327.20
1974-11-01 328.33
1974-12-01 329.50
1975-01-01 330.68
1975-02-01 331.41
1975-03-01 331.85
1975-04-01 333.29
1975-05-01 333.91
1975-06-01 333.40
1975-07-01 331.78
1975-08-01 329.88
1975-09-01 328.57
1975-10-01 328.46
1975-11-01 329.26
1976-01-01 331.71
1976-02-01 332.76
1976-03-01 333.48
1976-04-01 334.78
1976-05-01 334.78
1976-06-01 334.17
1976-07-01 332.78
1976-08-01 330.64
1976-09-01 328.95
1976-10-01 328.77
1976-11-01 330.23
1976-12-01 331.69
1977-01-01 332.70
1977-02-01 333.24
1977-03-01 334.96
1977-04-01 336.04
1977-05-01 336.82
1977-06-01 336.13
1977-07-01 334.73
1977-08-01 332.52
1977-09-01 331.19
1977-10-01 331.19
1977-11-01 332.35
1977-12-01 333.47
1978-01-01 335.11
1978-02-01 335.26
1978-03-01 336.60
1978-04-01 337.77
1978-05-01 338.00
1978-06-01 337.99
1978-07-01 336.48
1978-08-01 334.37
1978-09-01 332.27
1978-10-01 332.41
1978-11-01 333.76
1978-12-01 334.83
1979-01-01 336.21
1979-02-01 336.64
1979-03-01 338.12
1979-04-01 339.02
1979-05-01 339.02
1979-06-01 339.20
1979-07-01 337.58
1979-08-01 335.55
1979-09-01 333.89
1979-10-01 334.14
1979-11-01 335.26
1979-12-01 336.71
1980-01-01 337.81
1980-02-01 338.29
1980-03-01 340.04
1980-04-01 340.86
1980-05-01 341.47
1980-06-01 341.26
1980-07-01 339.29
1980-08-01 337.60
1980-09-01 336.12
1980-10-01 336.08
1980-11-01 337.22
1980-12-01 338.34
1981-01-01 339.36
1981-02-01 340.51
1981-03-01 341.57
1981-04-01 342.56
1981-05-01 343.01
1981-06-01 342.47
1981-07-01 340.71
1981-08-01 338.52
1981-09-01 336.96
1981-10-01 337.13
1981-11-01 338.58
1981-12-01 339.89
1982-01-01 340.93
1982-02-01 341.69
1982-03-01 342.69
1982-05-01 344.30
1982-06-01 343.43
1982-07-01 341.88
1982-08-01 339.89
1982-09-01 337.95
1982-10-01 338.10
1982-11-01 339.27
1982-12-01 340.67
1983-01-01 341.42
1983-02-01 342.68
1983-03-01 343.46
1983-04-01 345.10
1983-05-01 345.76
1983-06-01 345.36
1983-07-01 343.91
1983-08-01 342.05
1983-09-01 340.00
1983-10-01 340.12
1983-11-01 341.33
1983-12-01 342.94
1984-01-01 343.87
1984-02-01 344.60
1984-03-01 345.20
1984-05-01 347.36
1984-06-01 346.74
1984-07-01 345.41
1984-08-01 343.01
1984-09-01 341.23
1984-10-01 341.52
1984-11-01 342.86
1984-12-01 344.41
1985-01-01 345.09
1985-02-01 345.89
1985-03-01 347.49
1985-04-01 348.00
1985-05-01 348.75
1985-06-01 348.19
1985-07-01 346.54
1985-08-01 344.63
1985-09-01 343.03
1985-10-01 342.92
1985-11-01 344.24
1985-12-01 345.62
1986-01-01 346.43
1986-02-01 346.94
1986-03-01 347.88
1986-04-01 349.57
1986-05-01 350.35
1986-06-01 349.72
1986-07-01 347.78
1986-08-01 345.86
1986-09-01 344.84
1986-10-01 344.32
1986-11-01 345.67
1986-12-01 346.88
1987-01-01 348.19
1987-02-01 348.55
1987-03-01 349.52
1987-04-01 351.12
1987-05-01 351.84
1987-06-01 351.49
1987-07-01 349.82
1987-08-01 347.63
1987-09-01 346.38
1987-10-01 346.49
1987-11-01 347.75
1987-12-01 349.03
1988-01-01 350.20
1988-02-01 351.61
1988-03-01 352.22
1988-04-01 353.53
1988-05-01 354.14
1988-06-01 353.62
1988-07-01 352.53
1988-08-01 350.41
1988-09-01 348.84
1988-10-01 348.94
1988-11-01 350.04
1988-12-01 351.29
1989-01-01 352.72
1989-02-01 353.10
1989-03-01 353.65
1989-04-01 355.43
1989-05-01 355.70
1989-06-01 355.11
1989-07-01 353.79
1989-08-01 351.42
1989-09-01 349.81
1989-10-01 350.11
1989-11-01 351.26
1989-12-01 352.63
1990-01-01 353.64
1990-02-01 354.72
1990-03-01 355.49
1990-04-01 356.09
1990-05-01 357.08
1990-06-01 356.11
1990-07-01 354.70
1990-08-01 352.68
1990-09-01 351.05
1990-10-01 351.36
1990-11-01 352.81
1990-12-01 354.22
1991-01-01 354.85
1991-02-01 355.66
1991-03-01 357.04
1991-04-01 358.40
1991-05-01 359.00
1991-06-01 357.99
1991-07-01 356.00
1991-08-01 353.78
1991-09-01 352.20
1991-10-01 352.22
1991-11-01 353.70
1991-12-01 354.98
1992-01-01 356.09
1992-02-01 356.85
1992-03-01 357.73
1992-04-01 358.91
1992-05-01 359.45
1992-06-01 359.19
1992-07-01 356.72
1992-08-01 354.79
1992-09-01 352.79
1992-10-01 353.20
1992-11-01 354.15
1992-12-01 355.39
1993-01-01 356.77
1993-02-01 357.17
1993-03-01 358.26
1993-04-01 359.16
1993-05-01 360.07
1993-06-01 359.41
1993-07-01 357.44
1993-08-01 355.30
1993-09-01 353.87
1993-10-01 354.04
1993-11-01 355.27
1993-12-01 356.70
1994-01-01 358.00
1994-02-01 358.81
1994-03-01 359.68
1994-04-01 361.13
1994-05-01 361.48
1994-06-01 360.60
1994-07-01 359.20
1994-08-01 357.23
1994-09-01 355.42
1994-10-01 355.89
1994-11-01 357.41
1994-12-01 358.74
1995-01-01 359.73
1995-02-01 360.61
1995-03-01 361.58
1995-04-01 363.05
1995-05-01 363.62
1995-06-01 363.03
1995-07-01 361.55
1995-08-01 358.94
1995-09-01 357.93
1995-10-01 357.80
1995-11-01 359.22
1995-12-01 360.44
1996-01-01 361.83
1996-02-01 362.95
1996-03-01 363.91
1996-04-01 364.28
1996-05-01 364.94
1996-06-01 364.70
1996-07-01 363.31
1996-08-01 361.15
1996-09-01 359.40
1996-10-01 359.34
1996-11-01 360.62
1996-12-01 361.96
1997-01-01 362.81
1997-02-01 363.87
1997-03-01 364.25
1997-04-01 366.02
1997-05-01 366.46
1997-06-01 365.32
1997-07-01 364.07
1997-08-01 361.95
1997-09-01 360.06
1997-10-01 360.49
1997-11-01 362.19
1997-12-01 364.12
1998-01-01 364.99
1998-02-01 365.82
1998-03-01 366.95
1998-04-01 368.42
1998-05-01 369.33
1998-06-01 368.78
1998-07-01 367.59
1998-08-01 365.84
1998-09-01 363.83
1998-10-01 364.18
1998-11-01 365.34
1998-12-01 366.93
1999-01-01 367.94
1999-02-01 368.82
1999-03-01 369.46
1999-04-01 370.77
1999-05-01 370.66
1999-06-01 370.10
1999-07-01 369.08
1999-08-01 366.66
1999-09-01 364.60
1999-10-01 365.17
1999-11-01 366.51
1999-12-01 367.89
2000-01-01 369.04
2000-02-01 369.35
2000-03-01 370.38
2000-04-01 371.63
2000-05-01 371.32
2000-06-01 371.53
2000-07-01 369.75
2000-08-01 368.23
2000-09-01 366.87
2000-10-01 366.94
2000-11-01 368.27
2000-12-01 369.64
2001-01-01 370.46
2001-02-01 371.44
2001-03-01 372.37
2001-04-01 373.33
2001-05-01 373.77
2001-06-01 373.09
2001-07-01 371.51
2001-08-01 369.55
2001-09-01 368.12
2001-10-01 368.38
2001-11-01 369.66
2001-12-01 371.11
2002-01-01 372.36
2002-02-01 373.09
2002-03-01 373.81
2002-04-01 374.93
2002-05-01 375.58
2002-06-01 375.44
2002-07-01 373.86
2002-08-01 371.77
2002-09-01 370.73
2002-10-01 370.50
2002-11-01 372.18
2002-12-01 373.70
2003-01-01 374.92
2003-02-01 375.62
2003-03-01 376.51
2003-04-01 377.75
2003-05-01 378.54
2003-06-01 378.20
2003-07-01 376.68
2003-08-01 374.43
2003-09-01 373.11
2003-10-01 373.10
2003-11-01 374.77
2003-12-01 375.97
2004-01-01 377.03
2004-02-01 377.87
2004-03-01 378.88
2004-04-01 380.42
2004-05-01 380.62
2004-06-01 379.70
2004-07-01 377.43
2004-08-01 376.32
2004-09-01 374.19
2004-10-01 374.47
2004-11-01 376.15
2004-12-01 377.51
2005-01-01 378.43
2005-02-01 379.70
2005-03-01 380.92
2005-04-01 382.18
2005-05-01 382.45
2005-06-01 382.14
2005-07-01 380.60
2005-08-01 378.64
2005-09-01 376.73
2005-10-01 376.84
2005-11-01 378.29
2005-12-01 380.06
2006-01-01 381.40
2006-02-01 382.20
2006-03-01 382.66
2006-04-01 384.69
2006-05-01 384.94
2006-06-01 384.01
2006-07-01 382.14
2006-08-01 380.31
2006-09-01 378.81
2006-10-01 379.03
2006-11-01 380.17
2006-12-01 381.85
2007-01-01 382.94
2007-02-01 383.86
2007-03-01 384.49
2007-04-01 386.37
2007-05-01 386.54