High-resolution modeling of early contrail  evolution from hydrogen-powered aircraft

Lottermoser, Annemarie; Unterstrasser, Simon

doi:10.5194/acp-25-7903-2025

Articles | Volume 25, issue 14

https://doi.org/10.5194/acp-25-7903-2025

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

https://doi.org/10.5194/acp-25-7903-2025

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

Articles | Volume 25, issue 14

Research article

|

25 Jul 2025

Research article |

| 25 Jul 2025

High-resolution modeling of early contrail evolution from hydrogen-powered aircraft

Annemarie Lottermoser and Simon Unterstrasser

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Jan 2025	260	50	8	318
Feb 2025	138	42	6	186
Mar 2025	116	42	0	158
Apr 2025	130	50	8	188
May 2025	116	50	2	168
Jun 2025	124	50	6	180
Jul 2025	260	57	6	323
Aug 2025	289	49	12	350
Sep 2025	484	33	10	527
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Nov 2025	254	98	8	360
Dec 2025	257	134	14	405
Jan 2026	325	104	20	449
Feb 2026	414	70	13	497
Mar 2026	162	101	7	270
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May 2026	185	31	6	222
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Cumulative views and downloads (calculated since 17 Jan 2025)

Month	HTML	PDF	XML	Total
Jan 2025	260	50	8	318
Feb 2025	138	42	6	186
Mar 2025	116	42	0	158
Apr 2025	130	50	8	188
May 2025	116	50	2	168
Jun 2025	124	50	6	180
Jul 2025	260	57	6	323
Aug 2025	289	49	12	350
Sep 2025	484	33	10	527
Oct 2025	150	37	4	191
Nov 2025	254	98	8	360
Dec 2025	257	134	14	405
Jan 2026	325	104	20	449
Feb 2026	414	70	13	497
Mar 2026	162	101	7	270
Apr 2026	141	75	9	225
May 2026	185	31	6	222
Jun 2026	14	3	3	20

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Short summary

Contrail cirrus significantly contributes to aviation's overall climate impact. As hydrogen combustion and fuel cell use are emerging technologies for aircraft propulsion, we simulated individual contrails from hydrogen propulsion during the first 6 min after exhaust emission, termed the vortex phase. The ice crystal loss during that stage is crucial, as the number of ice crystals has a large impact on the further evolution of contrails into contrail cirrus and their radiative forcing.