Cientistas explicam como o dióxido de carbono resfria a estratosfera

14 de maio de 2026

Reportado por IA

Pesquisadores da Universidade de Columbia identificaram o mecanismo preciso pelo qual o aumento dos níveis de dióxido de carbono resfria a atmosfera superior. A descoberta explica décadas de resfriamento estratosférico observado em meio ao aquecimento da superfície. O estudo foi publicado na revista Nature Geoscience.

A estratosfera, a camada situada entre aproximadamente 11 e 50 quilômetros acima da superfície, resfriou cerca de 2 graus Celsius desde meados da década de 1980. Esse resfriamento excede em mais de dez vezes o valor esperado sem as emissões humanas de dióxido de carbono. O processo foi previsto pela primeira vez na década de 1960 pelo climatologista Syukuro Manabe.

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