Climate change: forecast for 2100 is floods and heat ... and it’s man’s fault By Nick Allen 9:04PM BST 16 Aug…

Questão

Climate change: forecast for 2100 is floods and heat ... and it’s man’s fault By Nick Allen 9:04PM BST 16 Aug 2013 Climate scientists have concluded that temperatures could jump by up to 5°C and sea levels could rise by up to 82 cm by the end of the century, according to a leaked draft of a United Nations (UN) report. The UN Intergovernmental Panel on Climate Change (IPCC) also said there was a 95 per cent likelihood that global warming is caused by human activities. That was the highest assessment so far from the IPCC, which put the figure at 90 per cent in a previous report in 2007, 66 per cent in 2001, and just over 50 per cent in 1995. Reto Knutti, a professor at the Swiss Federal Institute of Technology in Zurich, said: “We have got quite a bit more certain that climate change is largely man-made. We’re less certain than many would hope about the local impacts.” The IPCC report, the first of three in 2013 and 2014, will face intense scrutiny particularly after errors in the 2007 study, which wrongly predicted that all Himalayan glaciers could melt by 2035. Almost 200 governments have agreed to try to limit global warming to below 2°C above pre-industrial times, which is seen as a threshold for dangerous changes including more droughts, extinctions, floods and rising seas that could swamp coastal regions and island nations. Temperatures have already risen by 0.8°C since the Industrial Revolution. The report will say there is a high risk global temperatures will rise by more than 2°C this century. They could rise anywhere from about 0.6°C to almost 5°C a wider range at both ends of the scale than predicted in the 2007 report. It will also say evidence of rising sea levels is “unequivocal”. The report projects seas will rise by between 30 cm and 82 cm by the late 21st century. In 2007 the estimated rise was between 18 cm and 58 cm, but that did not fully account for changes in Antarctica and Greenland. Scientists say it is harder to predict local impacts. Drew Shindell, a Nasa scientist, said: “I talk to people in regional power planning. They ask, 'What’s the temperature going to be in this region in the next 20 to 30 years, because that’s where our power grid is?’ We can’t really tell.” (adapted from <telegraph.co.uk>) Considering what the text says about the IPCC and its predictions and conclusions on global warming, mark true (T) or false (F) for the following statements: ( ) The IPCC made a wrong prediction about the Himalayas in the 2007 report. ( ) Himalayan glaciers will certainly disappear by 2035 because of global warming. ( ) The IPCC can now be sure of how climate change will impact different locations. ( ) IPCC’s new report will be carefully examined after the errors committed in 2007. ( ) Global warming will have a huge impact in Swiss because of its large glaciers. Mark the alternative which presents the correct sequence, from top to bottom. (UFPR 2014)

1. A) T – F – F – T – F.
2. B) F – T – T – F – T
3. C) T – F – T – F – T.
4. D) F – F – F – T – T.

✅ Resposta correta: alternativa A

Resolução passo a passo

1. Analise cada afirmação com base no texto. A afirmação 1 é verdadeira (T), pois o texto diz que o relatório de 2007 previu erroneamente que todas as geleiras do Himalaia poderiam derreter até 2035. Passo 2: A afirmação 2 é falsa (F), porque o texto não afirma que as geleiras desaparecerão até 2035; a previsão de 2007 foi justamente considerada um erro. Passo 3: A afirmação 3 é falsa (F), pois o cientista Reto Knutti diz que ainda há menos certeza sobre os impactos locais, e Drew Shindell afirma que não é possível prever bem os efeitos regionais. Passo 4: A afirmação 4 é verdadeira (T), já que o texto diz que o novo relatório enfrentará intenso escrutínio, especialmente após os erros do estudo de 2007. Passo 5: A afirmação 5 é falsa (F), porque o texto não menciona a Suíça nem geleiras suíças como foco de impacto do aquecimento global; a Suíça aparece apenas como sede de um instituto de pesquisa. Passo 6: A sequência correta, de cima para baixo, é T – F – F – T – F, correspondente à alternativa A, que coincide com o gabarito oficial.

💡 Dica: Leia atentamente o texto e analise cada afirmativa com base nas informações apresentadas.

Alternativa por alternativa

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