Towards routine shipborne measurements of columnar CO2, CH4, CO, and NO2: a case study for tracking regional-scale emission patterns

Enders, Vincent; Müller, Astrid; Frey, Matthias Max; Hase, Frank; Kleinschek, Ralph; Knapp, Marvin; Löw, Benedikt; Morino, Isamu; Nakaoka, Shin-Ichiro; Nara, Hideki; Tanimoto, Hiroshi; Vardag, Sanam N.; Voss, Karolin; Butz, André

doi:10.5194/amt-19-2633-2026

Articles | Volume 19, issue 7

https://doi.org/10.5194/amt-19-2633-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-19-2633-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 7

Research article

|

17 Apr 2026

Research article |

| 17 Apr 2026

Towards routine shipborne measurements of columnar CO₂, CH₄, CO, and NO₂: a case study for tracking regional-scale emission patterns

Vincent Enders, Astrid Müller, Matthias Max Frey, Frank Hase, Ralph Kleinschek, Marvin Knapp, Benedikt Löw, Isamu Morino, Shin-Ichiro Nakaoka, Hideki Nara, Hiroshi Tanimoto, Sanam N. Vardag, Karolin Voss, and André Butz

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Cumulative views and downloads (calculated since 26 Sep 2025)

Month	HTML	PDF	XML	Total
Sep 2025	912	40	6	958
Oct 2025	284	80	12	376
Nov 2025	154	162	20	336
Dec 2025	72	78	22	172
Jan 2026	180	82	8	270
Feb 2026	92	128	20	240
Mar 2026	130	422	12	564
Apr 2026	304	204	21	529
May 2026	494	120	5	619
Jun 2026	36	29	5	70
Jul 2026	222	62	9	293
Aug 2026	76	36	9	121
Sep 2026	170	67	45	282
Oct 2026	312	68	37	417
Nov 2026	32	11	6	49

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Short summary

We have deployed two spectrometers on a ship traveling along the coast of Japan. By that, we were able to repeatedly measure the greenhouse gas and air pollutant emissions of power plants, large industrial facilities, and cities. Using the ratios between the different gases, we are able to identify sources based on their unique signature. In addition, we are able to show that spectrometers can be operated on a ship, while still fulfilling the high standards of land-based observation networks.