16 de janeiro de 2009

Qual o posicionamento de 2008 quanto ao aquecimento global?

A NASA responde:




  • "NASA's Goddard Institute for Space Studies has released its final report on "2008 Global Temperatures." Last year "was the coolest year since 2000." Given 0.05°C "uncertainty in comparing recent years," NASA "can only conclude with confidence that 2008 was somewhere within the range from 7th to 10th warmest year in the record.""
    The bigger climate news, of course, is that "in the period of instrumental measurements, which extends back to 1880 ... The ten warmest years all occur within the 12-year period 1997-2008."
    That's why the climate story of the decade is that the 2000s are on track to be nearly 0.2°C warmer than the 1990s. And that temperature jump is especially worrisome since the 1990s were only 0.14°C warmer than the 1980s."



Para continuar a ler a discussão ir a A broken record Gristmill: The environmental news blog Grist.
Nota: Sobre a diferença entre "tempo" e "clima" - principalmente, na eventualidade de alguém ficar na dúvida face ao "tempo" frio que tem estado (não nos Açores) - revisitar esta nota.

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