Files / data / co2_mm_mlo.csv

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40 comment lines before the header
# --------------------------------------------------------------------
# USE OF NOAA GML 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. To ensure that GML
# receives fair credit for their work please include relevant citation
# text in publications. We encourage users to contact the data providers,
# who can provide detailed information about the measurements and
# scientific insight.  In cases where the data are central to a
# publication, coauthorship for data providers may be appropriate.
#
#
#
# Contact:  Xin Lan (xin.lan@noaa.gov)
#
# File Creation: Fri Oct  9 13:08:07 2026
#
#
# --------------------------------------------------------------------
#
#
# See gml.noaa.gov/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 (scrippsco2.ucsd.edu).
# Monthly mean CO2 constructed from daily mean values.
# Scripps data downloaded from http://scrippsco2.ucsd.edu/data/atmospheric_co2
# Monthly values are corrected to center of month based on average seasonal
# cycle. Missing days can be asymmetric which would produce a high or low bias.
# Missing months have been interpolated, for NOAA data indicated by negative stdev
# and uncertainty. We have no information for SIO data about Ndays, stdv, unc
# so that they are also indicated by negative numbers
#
# NOTE: Due to the eruption of the Mauna Loa Volcano, measurements from Mauna Loa Observatory
# were suspended as of Nov. 29, 2022 and resumed in July 2023.
# Observations starting from December 2022 to July 4, 2023 are from a site at the
# Maunakea Observatories, approximately 21 miles north of the Mauna Loa Observatory.
#
yearmonthdecimal dateaveragedeseasonalizedndayssdevunc
195831958.2027315.71314.44-1-9.99-0.99
195841958.2877317.45315.16-1-9.99-0.99
195851958.3699317.51314.69-1-9.99-0.99
195861958.4548317.27315.15-1-9.99-0.99
195871958.5370315.87315.20-1-9.99-0.99
195881958.6219314.93316.21-1-9.99-0.99
195891958.7068313.21316.11-1-9.99-0.99
1958101958.7890312.42315.41-1-9.99-0.99
1958111958.8740313.33315.21-1-9.99-0.99
1958121958.9562314.67315.43-1-9.99-0.99
195911959.0411315.58315.52-1-9.99-0.99
195921959.1260316.49315.84-1-9.99-0.99
195931959.2027316.65315.37-1-9.99-0.99
195941959.2877317.72315.42-1-9.99-0.99
195951959.3699318.29315.46-1-9.99-0.99
195961959.4548318.15316.00-1-9.99-0.99
195971959.5370316.54315.87-1-9.99-0.99
195981959.6219314.80316.09-1-9.99-0.99
195991959.7068313.84316.75-1-9.99-0.99
1959101959.7890313.33316.34-1-9.99-0.99
1959111959.8740314.81316.69-1-9.99-0.99
1959121959.9562315.58316.35-1-9.99-0.99
196011960.0410316.43316.38-1-9.99-0.99
196021960.1257316.98316.33-1-9.99-0.99
196031960.2049317.58316.27-1-9.99-0.99
196041960.2896319.03316.70-1-9.99-0.99
196051960.3716320.03317.19-1-9.99-0.99
196061960.4563319.58317.45-1-9.99-0.99
196071960.5383318.18317.54-1-9.99-0.99
196081960.6230315.90317.22-1-9.99-0.99
196091960.7077314.17317.10-1-9.99-0.99
1960101960.7896313.83316.85-1-9.99-0.99
1960111960.8743315.00316.89-1-9.99-0.99
1960121960.9563316.19316.96-1-9.99-0.99
196111961.0411316.89316.84-1-9.99-0.99
196121961.1260317.70317.05-1-9.99-0.99
196131961.2027318.54317.25-1-9.99-0.99
196141961.2877319.48317.16-1-9.99-0.99
196151961.3699320.58317.73-1-9.99-0.99
196161961.4548319.77317.61-1-9.99-0.99
196171961.5370318.56317.89-1-9.99-0.99
196181961.6219316.79318.09-1-9.99-0.99
196191961.7068314.99317.92-1-9.99-0.99
1961101961.7890315.31318.34-1-9.99-0.99
1961111961.8740316.10318.00-1-9.99-0.99
1961121961.9562317.01317.78-1-9.99-0.99
196211962.0411317.94317.89-1-9.99-0.99
196221962.1260318.55317.89-1-9.99-0.99
196231962.2027319.68318.39-1-9.99-0.99
196241962.2877320.57318.24-1-9.99-0.99
196251962.3699321.02318.16-1-9.99-0.99
196261962.4548320.62318.45-1-9.99-0.99
196271962.5370319.61318.94-1-9.99-0.99
196281962.6219317.40318.71-1-9.99-0.99
196291962.7068316.24319.18-1-9.99-0.99
1962101962.7890315.42318.46-1-9.99-0.99
1962111962.8740316.69318.59-1-9.99-0.99
1962121962.9562317.70318.47-1-9.99-0.99
196311963.0411318.74318.69-1-9.99-0.99
196321963.1260319.07318.41-1-9.99-0.99
196331963.2027319.86318.57-1-9.99-0.99
196341963.2877321.38319.05-1-9.99-0.99
196351963.3699322.24319.38-1-9.99-0.99
196361963.4548321.49319.31-1-9.99-0.99
196371963.5370319.74319.07-1-9.99-0.99
196381963.6219317.77319.07-1-9.99-0.99
196391963.7068316.21319.16-1-9.99-0.99
1963101963.7890315.99319.03-1-9.99-0.99
1963111963.8740317.07318.98-1-9.99-0.99
1963121963.9562318.35319.13-1-9.99-0.99
196411964.0410319.57319.52-1-9.99-0.99
196421964.1257320.04319.37-1-9.99-0.99
196431964.2049320.75319.41-1-9.99-0.99
196441964.2896321.84319.46-1-9.99-0.99
196451964.3716322.25319.37-1-9.99-0.99
196461964.4563321.89319.73-1-9.99-0.99
196471964.5383320.44319.79-1-9.99-0.99
196481964.6230318.69320.03-1-9.99-0.99
196491964.7077316.71319.67-1-9.99-0.99
1964101964.7896316.87319.93-1-9.99-0.99
1964111964.8743317.68319.59-1-9.99-0.99
1964121964.9563318.71319.49-1-9.99-0.99
196511965.0411319.44319.38-1-9.99-0.99
196521965.1260320.44319.79-1-9.99-0.99
196531965.2027320.89319.59-1-9.99-0.99
196541965.2877322.14319.79-1-9.99-0.99
196551965.3699322.17319.28-1-9.99-0.99
196561965.4548321.87319.68-1-9.99-0.99
196571965.5370321.21320.53-1-9.99-0.99
196581965.6219318.87320.18-1-9.99-0.99
196591965.7068317.82320.78-1-9.99-0.99
1965101965.7890317.30320.37-1-9.99-0.99
1965111965.8740318.87320.79-1-9.99-0.99
1965121965.9562319.42320.20-1-9.99-0.99
196611966.0411320.62320.57-1-9.99-0.99
196621966.1260321.60320.94-1-9.99-0.99
196631966.2027322.39321.08-1-9.99-0.99
196641966.2877323.70321.34-1-9.99-0.99
196651966.3699324.08321.18-1-9.99-0.99
196661966.4548323.75321.55-1-9.99-0.99

The first 100 rows. Download the file for all of them.

SHA-256 d895fb5b4a59fb5e4cd98e69b7667fe5bef595c6581f630852b12cb41c07f675