Missing wintertime methane emissions from  New York City related to combustion

Schiferl, Luke D.; Hallward-Driemeier, Andrew; Zhao, Yuwei; Toledo-Crow, Ricardo; Commane, Róisín

doi:10.5194/acp-25-15683-2025

Articles | Volume 25, issue 22

https://doi.org/10.5194/acp-25-15683-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-15683-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 22

Research article

|

17 Nov 2025

Research article |

| 17 Nov 2025

Missing wintertime methane emissions from New York City related to combustion

Luke D. Schiferl, Andrew Hallward-Driemeier, Yuwei Zhao, Ricardo Toledo-Crow, and Róisín Commane

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Mar 2025	80	15	5	100
Apr 2025	49	12	4	65
May 2025	39	9	3	51
Jun 2025	51	11	6	68
Jul 2025	50	12	2	64
Aug 2025	114	17	0	131
Sep 2025	373	5	10	388
Oct 2025	69	23	7	99
Nov 2025	383	59	13	455
Dec 2025	172	153	9	334
Jan 2026	142	97	22	261
Feb 2026	132	78	17	227
Mar 2026	101	107	13	221
Apr 2026	128	123	17	268
May 2026	2	0	2

Cumulative views and downloads (calculated since 19 Mar 2025)

Month	HTML	PDF	XML	Total
Mar 2025	80	15	5	100
Apr 2025	49	12	4	65
May 2025	39	9	3	51
Jun 2025	51	11	6	68
Jul 2025	50	12	2	64
Aug 2025	114	17	0	131
Sep 2025	373	5	10	388
Oct 2025	69	23	7	99
Nov 2025	383	59	13	455
Dec 2025	172	153	9	334
Jan 2026	142	97	22	261
Feb 2026	132	78	17	227
Mar 2026	101	107	13	221
Apr 2026	128	123	17	268
May 2026	2	0	2

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Short summary

Identifying and quantifying methane emissions from urban sources is important for mitigating climate change. Using 6 years of winter and spring observations, we found that methane emissions from New York City are highly variable and underestimated compared to inventories, especially in winter, and correlate well with emissions of carbon monoxide (CO). Our results suggest a common urban incomplete combustion source for both methane and CO currently missing from emissions inventories.