Aviation’s climate impact extends beyond carbon dioxide emissions. A new international study, involving researchers from Chalmers University of Technology and the University of Gothenburg, reveals that contrails can represent a significant portion of aviation’s overall climate cost—with effects that vary sharply depending on atmospheric conditions and flight paths. By analyzing data from almost half a million flights, the research team has generated new insights that can support both industry and policymakers in guiding aviation toward more climate-optimized operations.
Contrails are a major driver of aviation’s climate impact, study shows
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