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Mauna Loa Observatory. Some data are in the form of “physical” evidence, such as temperature recordings, along with changes in arctic and mountain glaciers, and arctic and antarctic sea ice. Global mean surface temperatures have increased. Increase in temperature tracks carbon emissions
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Some data are in the form of “physical” evidence, such as temperature recordings, along with changes in arctic and mountain glaciers, and arctic and antarctic sea ice.
Increase in temperature tracks carbon emissions and CO2 ~ highest level of CO2 over past 400 Kyrs
450,000 yrs ago time today CO2, CH4 and temperature records from Antarctic ice core data Source:Vimeu et al., 2002, 100’s of thousands of years:Ice Core Data
Ice is breaking up earlier on rivers and lakes in the spring around the world
10-15% Decrease in Arctic Sea Ice Revealed by NOAA Operational Satellites
Glaciers are Retreating Globally In Switzerland… In Alaska…
Qori Kalis Glacier, Quelccaya Ice Cap, Peru between 1978 and 2000. Courtesy of L. Thompson, Byrd Polar Research Center
Permafrost in the Arctic is melting, leading to infrastructure damage as well as disrupting subsistence life styles
Research is also turning up many biological indicators … all of which suggest that average temperatures, in many habitats around the world, are rising.
Not only are more and more range shifts being documented, but other temperature-related changes are being reported in the literature.