From our friends at NASA comes this amazing 13-second animation that depicts how temperatures around the globe have warmed since 1950. You’ll note an acceleration of the temperature trend in the late 1970s as greenhouse gas emissions from energy production increased worldwide and clean air laws reduced emissions of pollutants that had a cooling effect on the climate, and thus were masking some of the global warming signal.
The data come from NASA's Goddard Institute for Space Studies in New York (GISS), which monitors global surface temperatures. As NASA notes, “All 10 of the warmest years in the GISS analysis have occurred since 1998, continuing a trend of temperatures well above the mid-20th century average."
From link.
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We've seen the greatest acceleration in warming since the 1970s.
I think it is a warning as well.
Our output of accumulated extra CO2 when added to the natural carbon cycle cannot be absorbed into the oceans and soil so it remains in the atmosphere. About 40% of this additional anthropogenic CO2 is absorbed. The rest remains in the atmosphere, and and now sees atmospheric CO2s at its highest level in 15 to 20 million years (Tripati 2009). Our forcing on the planet has accelerated the carbon cycle which is warming the planet. While fossil-fuel derived CO2 seems a very small part of the global carbon cycle, that extra CO2 we continue to put up is cumulative and also decreasing absorption rate capacity of natural carbon sinks (oceans and soil.)
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However, wait for the comment about something totally unrelated to divert from this.
Edit: Did I call it?
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JanforGore
- ronaldtofyluk voted up Watch 62 years of global warming in 13 seconds17 hours ago
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