Articles | Volume 14, issue 2
https://doi.org/10.5194/essd-14-991-2022
https://doi.org/10.5194/essd-14-991-2022
Data description paper
 | 
02 Mar 2022
Data description paper |  | 02 Mar 2022

Two decades of flask observations of atmospheric δ(O2∕N2), CO2, and APO at stations Lutjewad (the Netherlands) and Mace Head (Ireland), and 3 years from Halley station (Antarctica)

Linh N. T. Nguyen, Harro A. J. Meijer, Charlotte van Leeuwen, Bert A. M. Kers, Hubertus A. Scheeren, Anna E. Jones, Neil Brough, Thomas Barningham, Penelope A. Pickers, Andrew C. Manning, and Ingrid T. Luijkx

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Cited articles

Aoki, N., Ishidoya, S., Tohjima, Y., Morimoto, S., Keeling, R. F., Cox, A., Takebayashi, S., and Murayama, S.: Intercomparison of O2/N2 ratio scales among AIST, NIES, TU, and SIO based on a round-robin exercise using gravimetric standard mixtures, Atmos. Meas. Tech., 14, 6181–6193, https://doi.org/10.5194/amt-14-6181-2021, 2021. 
Barningham, T.: Detection and Attribution of Carbon Cycle Processes from Atmospheric O2 and CO2 Measurements at Halley Research Station, Antarctica and Weybourne Atmospheric Observatory, U.K., PhD Thesis, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom, 2018. 
Battle, M., Fletcher, S. M., Bender, M. L., Keeling, R. F., Manning, A. C., Gruber, N., Tans, P. P., Hendricks, M. B., Ho, D. T., Simonds, C., Mika, R., and Paplawsky, B.: Atmospheric potential oxygen: New observations and their implications for some atmospheric and oceanic models, Global Biogeochem. Cy., 20, GB1010, https://doi.org/10.1029/2005gb002534, 2006. 
Bender, M. L., Tans, P. P., Ellis, T., Orchardo, J., and Habfast, K.: A high precision isotope ratio mass spectrometry method for measuring the O2/N2 ratio of air, Geochim. Cosmochim. Ac., 58, 4751–4758, 1994. 
Bender, M. L., Ellis, T., Tans, P. P., Francey, R., and Lowe, D.: Variability in the O2/N2 ratio of southern hemisphere air, 1991–1994: Implications for the carbon cycle, Global Biogeochem. Cy., 10, 9–21, 1996. 
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Short summary
We present 20-year flask sample records of atmospheric CO2, O2, and APO from the stations Lutjewad (the Netherlands), Mace Head (Ireland), and Halley (Antarctica). Data from Lutjewad and Mace Head show similar long-term trends and seasonal cycles, agreeing with measurements from another station (Weybourne, UK). Measurements from Halley agree partly with those conducted by other institutes. From our 2002–2018 Lutjewad and Mace Head records, we find good agreement for global ocean carbon uptake.
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