NO | 2 |
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Acronym | NOAA |
Name | Global Monitoring Laboratory, NOAA |
Address 1 | NOAA/ESRL |
Address 2 | R/GML1 |
Address 3 | 325 Broadway Boulder, CO 80305-3328 |
Country/Territory | United States of America |
Website | https://gml.noaa.gov/ |
Name | Xin Lan |
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Prefix | |
xin.lan@noaa.gov | |
Organization No | 2 |
Organization acronym | NOAA |
Organization name | Global Monitoring Laboratory, NOAA |
Organization country/territory | United States of America |
Address 1 | NOAA GML |
Address 2 | 325 Broadway R/GML-1 |
Address 3 | Boulder, CO 80305-3328 |
Country/territory | United States of America |
Tel | |
Fax | |
Last updated date | 2024-08-01 |
Background observation | |
UTC | |
ppb | |
9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CH4 X2004A |
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1986-01-29 00:00:00 - 2013-09-05 16:00:00: Unknown(Gas chromatography (FID)) 2013-04-11 00:00:00 - 2023-12-31 23:00:00: Unknown(off-axis integrated cavity output spectroscopy (OA-ICOS)) |
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10 seconds | |
[Hourly] For GC/FID systems, hourly averages were calculated from all valid measurements within an hour and reported in our data files with the number of measurements (nvalue) and standard deviation (value_std_dev). For n=1, value_std_dev cannot be calculated. For spectrometer systems, 5-minute averages are used to calculate hourly averages, but value_std_dev includes variability in the 5-min averages, so it is greater than the normal sample SD of the 5-min averages that go into the hourly mean, and when nvalue=1 (i.e., one 5-min average in the hourly mean), value_std_dev is still calculated and reported. [Daily] Daily values derived from hourly data representative of baseline conditions [Monthly] Monthly values derived from hourly data representative of baseline conditions |
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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. 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. | |
Valid (background): ... Valid (background): ..? Valid: .?? Invalid: ??? |
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Operational/Reporting | |
Atmospheric Methane Dry Air Mole Fractions from quasi-continuous measurements at Barrow, Alaska. These data are provided by NOAA. Principal investigators include Xin Lan (NOAA). Please cite the product's citation when using data from this dataset : K.W. Thoning, X. Lan, A.M. Crotwell, and J.W. Mund (2024), Atmospheric methane from quasi-continuous measurements at Barrow, Alaska and Mauna Loa, Hawaii, 1986-2023, Version: 2024-02-12, National Oceanic and Atmospheric Administration (NOAA), Global Monitoring Laboratory (GML), Boulder, Colorado, USA https://doi.org/10.15138/ve0c-be70 |
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Wind direction: Wind speed: Relative humidity: Precipitation amount: Air pressure: Air temperature: Dew point temperature: Sea water temperature: Sea surface water temperature: Sea water salinity: Sea surface water salinity: |
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Meteorological data may remain as first provided, even when greenhouse gas data are updated. |
DOI |
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For more information, please refer: doi.org/10.15138/ve0c-be70 |
Format | Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF | ||||
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Relation List (Is Part Of) |
All CH4 data contributed to WDCGG by GAW stations and mobiles by 2023-09-13 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2022-09-07 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2021-08-27 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2020-09-28 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2019-09-19 All CH4 data contributed to WDCGG by GAW stations and mobiles by 2018-10-25 |
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Geolocation Point |
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1 | K.W. Thoning, X. Lan, A.M. Crotwell, and J.W. Mund (2024), Atmospheric methane from quasi-continuous measurements at Barrow, Alaska and Mauna Loa, Hawaii, 1986-2023, Version: 2024-02-12, National Oceanic and Atmospheric Administration (NOAA), Global Monitoring Laboratory (GML), Boulder, Colorado, USA https://doi.org/10.15138/ve0c-be70 |
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2 | Dlugokencky, E. J., L. P. Steele, P. M. Lang and K. A. Masarie, (1995), Atmospheric methane at Mauna Loa and Barrow observatories: Presentation and analysis of in situ measurements, Journal of Geophysical Research-Atmospheres, 100, d11, 23103-23113, doi:10.1029/95JD0246. |