Mai così poco ghiaccio marino in Antartide negli ultimi 45 anni: il record negativo è stato registrato lo scorso 21 febbraio, quando si è raggiunta l'estensione minima annuale di 1,79 milioni di chilometri quadrati, la più bassa documentata dai satelliti dal 1979 a oggi.
Il record negativo precedente era stato stabilito nel 2022 con 1,9 milioni di chilometri quadrati. Lo rende noto il National Snow and Ice Data Center dell'Università del Colorado a Boulder.
Ghiacciai, scioglimento più veloce del previsto
Telegiornale 07.01.2023, 12:30
Allargando lo sguardo a quanto accaduto negli ultimi anni, anche il 2017 e il 2018 hanno fatto segnare estensioni dei ghiacci molto ridotte, rispettivamente la terza e la quarta più bassa registrate finora dai satelliti.
Questo trend fa ipotizzare che il riscaldamento globale stia ormai colpendo anche i ghiacci intorno all'Antartide, ma per avere una conferma statisticamente significativa bisognerà raccogliere dati su un periodo di tempo più lungo.
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