Two recent studies provide further evidence that climate change sceptics are simply burying their heads in the sand. Both studies, one in Europe the other in the US are showing that not only does increasing atmospheric CO2 lead to higher temperatures, but that higher temperatures appear to cause CO2 to increase. That’s a ‘psitive feedback loop’ kids. Great if you’re trying to get your amp to howl. Very bad if you want a stable, sustainable climate.
First, researchers at Wageningen University (Netherlands), the Potsdam Institute for Climate Impact Research (Germany) and the Centre for Ecology and Hydrology (UK) have been examining data from proxy sources (ice cores and such) over the period following the Middle Ages’ ‘little ice age’. Their findings strongly suggest that global warming will be accelerated by the effects of climate change on the rate of carbon dioxide increase.
Second, scientists at the Lawrence Berkeley National Laboratory studying the Vostok ice core data have found that the 21st Century may get warmer than we thought
In their GRL paper, Torn and Harte make the case that the current climate change models, which are predicting a global temperature increase of as much as 5.8 degrees Celsius by the end of the century, may be off by nearly 2.0 degrees Celsius because they only take into consideration the increased greenhouse gas concentrations that result from anthropogenic (human) activities.
â€œIf the past is any guide, then when our anthropogenic greenhouse gas emissions cause global warming, it will alter earth system processes, resulting in additional atmospheric greenhouse gas loading and additional warming,â€ said Torn.
[tags]climate change, global warming, co2, feedback[/tags]