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Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations

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Archive 2024-01-11

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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2024-01-11). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-09-20

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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-09-20). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-08-10

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  • 567 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-08-10). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-07-19

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  • 566 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-07-19). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-05-22

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  • 564 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-05-22). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-04-18

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  • 561 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-04-18). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-03-21

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  • 561 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-03-21). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2023-01-19

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  • 558 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2023-01-19). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-12-02

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  • 553 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-12-02). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-11-17

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  • 552 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-11-17). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-10-24

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  • 550 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-10-24). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-09-16

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  • 548 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-09-16). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-08-23

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  • 548 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-08-23). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-07-14

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  • 546 KB
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-07-14). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-06-24

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  • 545 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-06-24). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-05-31

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  • 544 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-05-31). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-04-13

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  • 541 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-04-13). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2022-02-04

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  • 537 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2022-02-04). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-11-05

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  • 533 KB
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  • ZIP Format
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To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-11-05). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-10-15

File Size
  • 533 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-10-15). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-09-21

File Size
  • 531 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-09-21). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-08-18

File Size
  • 530 KB
File Format
  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-08-18). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-06-21

File Size
  • 527 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-06-21). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-05-12

File Size
  • 522 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-05-12). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2021-04-13

File Size
  • 519 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2021-04-13). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Archive 2020-07-09

File Size
  • 505 KB
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  • ZIP Format
Cite This Work

To cite this particular archive, use:
Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations (Archive 2020-07-09). In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Methods

The CO2 data use a Siemens non-dispersive infrared analyzer. The O2/N2 measurements are performed with a custom interferometric O2 analyzer. Sampling, analysis, and calibration methods are described in Keeling et al (2007) and Keeling et al (1998).

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Collection
Cite This Work

Keeling, Ralph F. (2021). Atmospheric Flask O2/N2 and CO2 Data Sets – Multiple Sampling Stations. In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0HT2PH4

Description

Atmospheric flask O2/N2 and CO2 data sets taken at 12 sampling stations. The stations ALT, BRW, CBA, LJO, MLO, KUM, SAM, CGO, PSA, SPO are active and generate ongoing data sets, which are updated when new data is available. The stations MCQ, and NWR are no longer active, but are included here as legacy station data. The data are provided as replicate averages of flasks collected on a given date ("daily "). The resolution of the replicate averages depends on sampling frequency, which is station dependent, typically between weekly and fortnightly (once every two weeks).

These data are subject to revision based on recalibration of standard gases.

Active Stations (abbreviation - location, latitude, longitude, elevation, dates of collection)

ALT - Alert, NWT, Canada, 82.3°N, 62.3°W, 210m, 1989 - present
BRW - Barrow, Alaska, 71.3°N, 156.8°W, 3m, 2010 - present
CBA - Cold Bay, Alaska, 55°N 163°W, 42m, 1995 - present
LJO - La Jolla Pier, California, 32.9°N, 117.3°W, 10m, 1989 - present
MLO - Mauna Loa Observatory, Hawaii, 19.5°N, 155.6°W, 3397m, 1991 - present
KUM - Cape Kumukahi, Hawaii, 19.5°N, 154.8°W, 3m, 1993 - present
SAM - American Samoa, 14°S 170°W, 42m, 1993 - present
CGO - Cape Grim, Australia, 41°S 150°E, 91m, 1991 - present
PSA - Palmer Station, Antarctica, 65°S 64°W, 2835m, 1996 - present
SPO - South Pole, Antarctica, 90.0°S, 0.0°E, 2810m, 1991 - present

Legacy Stations (abbreviation - location, latitude, longitude, elevation, dates of collection)

MCQ - Macquarie Island, 54°S 159°E, 94m, 1993 - 1994
NWR - Niwot Ridge, 40°N 105°W, 3749m, 1991 - 1993

See Map of Scripps O2 Program Sampling Stations.

Scope And Content

This item presents data from the current data archive, as well as previous data archives. All archives include time series that extend back to the beginning of each record. Most users will want to use the most recent archive, which contains the latest data version as well as the most up-to-date records. The data in earlier archives may have been superseded in the latest version by updates to instrument calibrations or data filtering.

Versions of this data prior to Archive 2020-07-09 were made available at https://doi.org/10.6075/J0GM85NM for Atmospheric Flask O2/N2 Data Sets – Multiple Sampling Stations and https://doi.org/10.6075/J0MC8XBH for Atmospheric Flask CO2 Data Sets – Multiple Sampling Stations. These items are still available but are no longer being updated with the latest data.

Date Collected
  • 1989 to present
Date Issued
  • 2021
Creators
Contributor
Note

Data Usage:
The data and graphics on this website are made freely available, with the understanding that appropriate credit will be given. For applications supporting peer-reviewed scientific publications, coauthorship may sometimes be appropriate. An example would be if an important result or conclusion depends on this product, such as the first account of a previously unreported phenomenon. Ethical usage requires disclosing intentions at early stages of the work in order to avoid duplicating ongoing studies at Scripps. For applications where coauthorship is not needed, which includes all applications outside of the peer-reviewed scientific literature, it is sufficient to acknowledge the Scripps CO2 program as the source. Please direct queries to Ralph Keeling (rkeeling@ucsd.edu).

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  • No linguistic content; Not applicable
Identifier

Doi: https://doi.org/10.6075/J0HT2PH4

Related Resources

    Previous version

    • Keeling, Ralph F. (2019). Atmospheric Flask CO2 Data Sets – Multiple Sampling Stations. In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0MC8XBH

    • Keeling, Ralph F. (2019). Atmospheric Flask O2/N2 Data Sets – Multiple Sampling Stations. In Scripps O2 Program Data. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0GM85NM

    Other version

    Reference

    • Keeling, R. F. and A. C. Manning (2014). Studies of recent changes in atmospheric O2 content. Treatise on Geochemistry, Volume 5. R. F. Keeling and L. Russell. Amsterdam, Elsevier: 385-404. https://doi.org/10.1016/B978-0-08-095975-7.00420-4

    • Keeling, R. F., A. C. Manning, E. M. McEvoy and S. R. Shertz (1998). "Methods for measuring changes in atmospheric O2 concentration and their application in southern hemisphere air." Journal of Geophysical Research-Atmospheres 103(D3): 3381-3397. https://doi.org/10.1029/97JD02537

    • Keeling, R. F., A. C. Manning, W. J. Paplawsky and A. C. Cox (2007). "On the long-term stability of reference gases for atmospheric O2/N2 and CO2 measurements." Tellus Series B-Chemical and Physical Meteorology 59(1): 3-14. https://doi.org/10.1111/j.1600-0889.2006.00196.x

    • Manning, A. C. and R. F. Keeling (2006). "Global oceanic and land biotic carbon sinks from the Scripps atmospheric oxygen flask sampling network." Tellus 58B: 95-116. https://doi.org/10.1111/j.1600-0889.2006.00175.x

    Other resource

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Last Modified

2024-01-30