|Name||Earth System Research Laboratory, NOAA|
|Address 3||325 Broadway Boulder, CO 80305-3337|
|Country/Territory||United States of America|
|Organization name||Earth System Research Laboratory, NOAA|
|Organization country/territory||United States of America|
|Address 1||NOAA ESRL GML|
|Address 2||325 Broadway R/GML-1|
|Address 3||Boulder, CO 80305-3328|
|Country/territory||United States of America|
|Last updated date||2020-08-26|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO2 X2007
2002-04-19 16:45:00 - 2017-06-01 20:11:00: Unknown(NDIR)
Uncertainties of the CO2 measurements are now included.
Key components of it are our ability to propagate the WMO XCO2 scale to working standards, the repeatability of the analyzers used for sample measurement, and agreement between pairs of samples collected simultaneously.
Zhao and Tans (2006) determined that the internal consistency of working standards is +/- 0.02 ppm (68% confidence interval).
The typical repeatability of the analyzers, based on repeated measurements of natural air from a cylinder, is +/- 0.03 ppm.
Average agreement between pairs of samples flushed in series across the entire sampling network is +/- 0.07 ppm.
|This is the NOAA 3-character quality control flag. Column 1 is the REJECTION flag. An alphanumeric other than a period (.) in the FIRST column indicates a sample with obvious problems during collection or analysis. This measurement should not be interpreted. Column 2 is the SELECTION flag. An alphanumeric other than a period (.) in the SECOND column indicates a sample that is likely valid but does not meet selection criteria determined by the goals of a particular investigation. For example, it might not have been obtained during 'background' conditions. Column 3 is the INFORMATION flag. An alphanumeric other than a period (.) in the THIRD column provides additional information about the collection or analysis of the sample. A P in the 3rd column of the QC flag indicates the measurement result is preliminary and has not yet been carefully examined by the PI. The P flag is removed once the quality of the measurement has been determined.|
Valid (background): ...
Valid (background): ..?
Atmospheric Carbon Dioxide Dry Air Mole Fractions from the NOAA GMD Carbon Cycle Cooperative Global Air Sampling Network, 1968-2019
These data are provided by NOAA. Principal investigators include Ed Dlugokencky (NOAA). Key partners include Ralph Keeling (SIO).
Dew point temperature:
Sea water temperature:
Sea surface water temperature:
Sea water salinity:
Sea surface water salinity:
Meteorological data may remain as first provded, even when greenhouse gas data are updated.
|1||Dlugokencky, E.J., J.W. Mund, A.M. Crotwell, M.J. Crotwell, and K.W. Thoning (2020), Atmospheric Carbon Dioxide Dry Air Mole Fractions from the NOAA GML Carbon Cycle Cooperative Global Air Sampling Network, 1968-2019, Version: 2020-07, https://doi.org/10.15138/wkgj-f215|
|2||Conway, T.J., P.P. Tans, L.S. Waterman, K.W. Thoning, D.R. Kitzis, K.A. Masarie, and N. Zhang, Evidence for interannual variability of the carbon cycle from the NOAA/GMD global air sampling network, J. Geophys. Res.,99,22831 22855, 1994.|