An increasingly large amount of scientific research, published since the IPCC 4th Assessment Report was released in 2007, shows that climate change is occurring right now, and that it is much faster than predicted only two years ago.
The evidence for this statement is from a multitude of areas. Some of the regions currently undergoing change are shown below.
-Multiple plants and animals, in widespread sites, are already showing evidence of climate change. Examples include the timing of plant flowering, animal breeding, and lake thawing.
-Warmer ocean surface temperatures in Pacific & Atlantic hurricane-formation zones leading to stronger storms are significantly linked to human-induced warming.
-Ocean acidification is occurring quickly, due to CO2 in massive amounts dissolving in salty water. This will have major impacts on marine ecosystems and subsequently food supplies for many countries.
-Probable sea-level rise over the next 100 years will be higher than that calculated in 2007. It will probably increase at least 100cm, based on newly released scientific studies.
-Rapid melting of Greenland's glaciers, which began in 2004, is conclusively due to the greenhouse effect.
-The West Antarctic Ice Shelf has undergone rapid melting over the last 10 years and has suffered 10 major ice shelf collapses over that time.
-Northern polar sea-ice is melting much quicker than previously estimated, and it is likely that the Arctic will be free of ice in summer within a few decades.
-Arctic Circle permafrost is thawing much faster than recently thought, and is liberating a lot more greenhouse gases than forecast.
The warming that is now taking place is expected to go on for many centuries, after all human-sourced CO2 escape ceases. This is due to the significant delays that exist in the climate-ocean system, as well as the long half-life of atmospheric carbon dioxide.
The evidence for this statement is from a multitude of areas. Some of the regions currently undergoing change are shown below.
-Multiple plants and animals, in widespread sites, are already showing evidence of climate change. Examples include the timing of plant flowering, animal breeding, and lake thawing.
-Warmer ocean surface temperatures in Pacific & Atlantic hurricane-formation zones leading to stronger storms are significantly linked to human-induced warming.
-Ocean acidification is occurring quickly, due to CO2 in massive amounts dissolving in salty water. This will have major impacts on marine ecosystems and subsequently food supplies for many countries.
-Probable sea-level rise over the next 100 years will be higher than that calculated in 2007. It will probably increase at least 100cm, based on newly released scientific studies.
-Rapid melting of Greenland's glaciers, which began in 2004, is conclusively due to the greenhouse effect.
-The West Antarctic Ice Shelf has undergone rapid melting over the last 10 years and has suffered 10 major ice shelf collapses over that time.
-Northern polar sea-ice is melting much quicker than previously estimated, and it is likely that the Arctic will be free of ice in summer within a few decades.
-Arctic Circle permafrost is thawing much faster than recently thought, and is liberating a lot more greenhouse gases than forecast.
The warming that is now taking place is expected to go on for many centuries, after all human-sourced CO2 escape ceases. This is due to the significant delays that exist in the climate-ocean system, as well as the long half-life of atmospheric carbon dioxide.
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