Derretimento de geleiras da Groenlândia é situação 'dramática' para o planeta

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Cientistas acreditavam que as geleiras do norte da Groenlândia estavam estáveis.

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Mas um novo estudo, mostrou que as plataformas de gelo da região perderam mais de um terço do seu volume, nos últimos 50 anos.

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A área tem gelo suficiente para elevar o nível do mar em mais de dois metros.

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O estudo publicado na Nature Communications revelou que, desde 1978, devido ao aumento das temperaturas, as plataformas de gelo do norte da Gronelândia perderam mais de 35% do seu volume total.

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Se o cenário continuar, as consequências para o planeta podem ser “dramáticas”.

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O derretimento das plataformas de gelo em si não contribui para o aumento do nível do mar, uma vez que estão na água. Mas elas funcionam como "represas" que regulam a descarga de gelo no oceano da camada de gelo.

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Se essas barreiras naturais se desintegrarem, as geleiras poderão despejar mais gelo nos oceanos.

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A camada de gelo da Groenlândia representa hoje em torno de 17% do aumento do nível do mar observado entre 2006 e 2018.

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