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)

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

doi:10.5194/essd-14-991-2022

Articles | Volume 14, issue 2

https://doi.org/10.5194/essd-14-991-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-14-991-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 2

Data description article

|

02 Mar 2022

Data description article |

| 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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Aug 2021	113	33	2	148
Sep 2021	180	24	6	210
Oct 2021	38	12	1	51
Nov 2021	61	16	4	81
Dec 2021	22	7	3	32
Jan 2022	33	6	1	40
Feb 2022	53	18	0	71
Mar 2022	250	61	8	319
Apr 2022	73	27	2	102
May 2022	30	18	1	49
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Jan 2023	36	26	0	62
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Jul 2024	63	8	8	79
Aug 2024	55	10	5	70
Sep 2024	47	9	0	56
Oct 2024	59	24	1	84
Nov 2024	62	7	2	71
Dec 2024	53	8	1	62
Jan 2025	43	19	1	63
Feb 2025	47	9	0	56
Mar 2025	61	14	0	75
Apr 2025	55	16	1	72
May 2025	60	17	1	78
Jun 2025	66	36	2	104
Jul 2025	39	25	1	65
Aug 2025	91	11	2	104
Sep 2025	182	32	3	217
Oct 2025	58	41	2	101
Nov 2025	49	29	2	80
Dec 2025	56	42	1	99
Jan 2026	69	40	8	117
Feb 2026	86	41	1	128
Mar 2026	68	47	5	120
Apr 2026	31	42	4	77

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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.