In line with the GAW Data Policy, users should contact the contributors of all data of interest and propose co-authorship or acknowledgement.
Organization
| NO | 2 |
|---|---|
| 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/ |
Contact(s)
| Name | Xin Lan |
|---|---|
| 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 | 2024-02-20 |
| Background observation | |
| UTC | |
| ppb | |
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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 | |
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[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. | |
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Valid (background): ... Valid (background): ..? Valid: .?? Invalid: ??? |
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| Operational/Reporting | |
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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 Metadata
| DOI |
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| For more information, please refer: doi.org/10.15138/ve0c-be70 | |||||||||||||
Related information
| Format | Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF | ||||
|---|---|---|---|---|---|
| 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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GAW Data Policy
"For Scientific purposes, access to these data is unlimited and provided without charge.
By their use you accept that an offer of co-authorship will be made through personal contact with the data providers
or owners whenever substantial use is made of their data.
In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."
Citation format
This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.
Please follow the citation format which the data providers or owners indicate.
Xin Lan (NOAA),
Atmospheric CH4
at Barrow (AK) by Global Monitoring Laboratory, NOAA
,
dataset published as CH4_BRW_
surface-insitu_NOAA_ccgg at WDCGG,
ver. 2024-02-20-1243 (Reference date*: YYYY/MM/DD)
* As the reference date, please indicate the date you downloaded the files.
* As the reference date, please indicate the date you downloaded the files.
Reference(s)
| 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 |
|---|---|
| 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. |
