Atualidades - Aula 07 - Meio Ambiente e Sustentabilidade (Parte III)

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Professor Urani

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Professor Urani


Professor Urani

IPCC –RELATÓRIO INTERGOVERNAMENTAL

SOBRE ALTERAÇÕES CLIMÁTICAS.-Até o fim deste século, a temperatura da Terra pode subir de 1,8ºC até 4ºC. Na pior das previsões, essa alta pode chegar a 6,4°C

-O nível dos oceanos vai aumentar de 18 a 59 centímetros até 2.100, o que significa que 200 milhões de pessoas terão de abandonar suas casas.- As chuvas devem aumentar cerca de 20%.www.grancursosonline.com.br

Professor Urani

-O gelo do Pólo Norte poderia ser completamente derretido no verão, por volta de 2100.-Nos ciclones tropicais, a velocidade do vento e as chuvas serão mais intensas.-O aquecimento da Terra não será homogêneo e será mais sentido nos continentes do que no oceano. O hemisfério norte será mais afetado do que o sul.-No Brasil, o aquecimento mais intenso ocorrerá no final deste século, no Centro-Oeste e no Norte, regiões que abrigam a Floresta Amazônica.- O sul da Ásia será uma das regiões mais afetadas.


Professor Urani

IPCC – RELATÓRIO INTERGOVERNAMENTAL SOBRE ALTERAÇÕES CLIMÁTICAS.

-O encolhimento das geleiras ameaçará o suprimento de água para, pelo menos, 50 milhões de pessoas.-Ao menos 300 mil pessoas morrerão a cada ano devido a doenças relacionadas com as alterações climáticas.-Haverá morte de 80% dos recifes de coral. A Grande Barreira de Corais, na Austrália, irá desaparecer.www.grancursosonline.com.br

Professor Urani

-As emissões passadas e futuras de CO2 continuarão contribuindo para o aquecimento global e a elevação do nível dos mares durante mais de um milênio.

- O aquecimento do planeta se deve, com 90% de probabilidade, às emissões de dióxido de carbono e outros gases que causam o efeito estufa, provocadas pela mão do homem.


Professor Urani

IPCC – RELATÓRIO INTERGOVERNAMENTAL SOBRE ALTERAÇÕES CLIMÁTICAS.

-As geleiras estão derretendo três vezes mais rápido do que na década de 80. Isso provocou uma diminuição de espessura de 60 a 70 centímetros, em média, em 2005.-O nível do mar subiu 1,8 mm entre 1961 e 2003.-Onze dos últimos 12 anos foram os mais quentes desde que a temperatura terrestre começou a ser medida, em 1850.-A temperatura nos oceanos está subindo e eles estão absorvendo 80% do calor que foi adicionado sistema climático da Terra. Isso faz com que o nível dos mares aumente.


Professor Urani

-A temperatura média no Ártico tem aumentado quase duas vezes mais do que a média global nos últimos 100 anos.

-A quantidade de chuvas aumentou no leste das Américas do Norte e do Sul, norte da Europa e centro e norte da Ásia.

- As secas estão mais fortes no Sahel (África), no Mediterrâneo, no sul da África e em algumas áreas do sul da

Ásia.


Professor Urani


Professor Urani


Professor Urani


Professor Urani


Professor Urani


Professor Urani


Professor Urani


Professor Urani


Professor Urani

CAMADA DE OZÔNIOFranK Sherwood Rowland e Mário Molina 1974.

1985 – Cientistas Ingleses


Professor Urani

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Professor Urani


Professor Urani

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Atualidades - Aula 07 - Meio Ambiente e Sustentabilidade (Parte III)