Climate Change I

 The Intergovernmental Panel on Climate Change (IPCC) has released a report that to a “very high level of confidence” (at least a 90% chance) global warming since 1750 is a consequence of human activities. IPCC is an international body of scientists and was established by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) in 1988.

According to the IPCC report “Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level”.

I thought you may find it interesting to look at the following figure from the IPCC report.


[Caption from IPCC report]  “FIGURE SPM-4. Comparison of observed continental- and global-scale changes in surface temperature with results simulated by climate models using natural and anthropogenic forcings. Decadal averages of observations are shown for the period 1906–2005 (black line) plotted against the centre of the decade and relative to the corresponding average for 1901–1950. Lines are dashed where spatial coverage is less than 50%. Blue shaded bands show the 5–95% range for 19 simulations from 5 climate models using only the natural forcings due to solar activity and volcanoes. Red shaded bands show the 5–95% range for 58 simulations from 14 climate models using both natural and anthropogenic forcings.”

I’ll write more about the IPCC report at a later time. At the moment I am tired and cold. Despite the rise in average temperatures, right now it is very cold here in Minnesota. Temperatures are in the single digits (Fahrenheit) above and below 0 (F). Actually, up to this point we have had a warmer than usual winter – but that didn’t last. Oh, well!

There are also several other topics that I would like to cover but I just haven’t had enough time to work on those. Stay tuned, though. Andif you are somewhere warm, send a little of it my way.


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