Long-lived contrails usually form in natural ice clouds
Peer-Reviewed Publication
Updates every hour. Last Updated: 6-Nov-2025 17:11 ET (6-Nov-2025 22:11 GMT/UTC)
A new ERC synergy grant provides funding to investigate the role of turbulence in the physics of stratocumulus clouds and create meteorological models to improve weather and climate predictions
The interdisciplinary team consists of Eberhard Bodenschatz (Göttingen, Germany), Fabian Hoffmann (Berlin, Germany), Bernhard Mehlig (Gothenburg, Sweden) and Pier Siebesma (Delft, Netherlands), and their research groups
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Contrails in the blue sky remind us of daily air traffic – and its impact on the climate. However, the effect of contrails on the climate is still only partially understood. It is assumed that they have a predominantly warming effect. Researchers from Forschungszentrum Jülich and universities in Mainz, Cologne, and Wuppertal have now discovered: 80 per cent of all long-lived contrails do not form in cloudless skies, but within existing natural ice clouds, known as cirrus clouds. The climate impact of these embedded contrails has hardly been investigated to date. However, the study published in the journal Nature Communications provides new insights and could influence the planning of climate-optimized flight routes in the future.