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quinta-feira, 15 de outubro de 2015

Degelo da Antártida poderá aumentar nível do mar em 3 metros

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
Um grupo de pesquisadores da Universidade de Victoria, na Nova Zelândia, sugeriu que o degelo da Antártida, como consequência da mudança climática, pode aumentar o nível do mar em até três metros no ano 2300, segundo um estudo divulgado nesta quarta-feira pela revista "Nature".
 
A curto prazo, a simulação climática apontou que, no final do século, os aquecimentos da atmosféra e dos oceanos podem levar à perda de 80% a 85% da camada de gelo da Antártida e a um aumento do nível do mar.

Os cientistas explicaram que as mudanças na temperatura atmosférica e oceânica podem incidir nas taxas de fusão do gelo devido à troca de calor entre o gelo e a água ou o ar.

Embora seja difícil calcular com precisão a contribuição das grandes camadas de gelo para o aumento do nível do mar, o especialista do Centro de Pesquisa da Antártida, Nicholas Golledge, e seus colegas, elaboraram um modelo por computador que contempla diferentes cenários.

No âmbito da pesquisa climática, esses possíveis cenários exploram em que medida o homem poderia contribuir para a mudança climática no futuro levando em conta fatores como o crescimento da poluição, o desenvolvimento econômico e das novas tecnologias.

Os pesquisadores desse estudo contemplaram quatro possíveis cenários, propostos pelo quinto Relatório do Painel Intergovernamental sobre Mudanças Climáticas, que revelou que o nível do mar em 2300 aumentará entre 0,1 e 3 metros; e no ano 5000 entre 0,4 e 9 metros.

Se a poluição causada pelo homem continuar nos níveis atuais, a temperatura global corre o risco de aumentar entre 8 e 10 graus em três séculos.

A única solução para atenuar o grave impacto da poluição sobre a camada de gelo da Antártida, segundo os autores do estudo, passa por limitar a emissão de gases estufa nas próximas décadas. 
 
Agência EFE
DeOlhOnafigueira
 
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