Global Warming

All of the above information in red was obtained from the IPCC Fourth Assessment Report: Climate Change 2007. For a more detailed account visit http://ipcc.ch/publications_and_data/ar4/syr/en/mains1.html. Anxiously awaiting the Fifth Assessment Report due in late 2014, when published I will update the page.

- From 1961-2003 sea level rose 75.6mm or about 3 inches.

- 1995-2006 ranked among 11 of the 12 warmest years in the instrumental record of global surface temperature since 1850 up until 2007. 

- The maximum area extent of seasonally frozen ground has decreased by about 7% in the Northern Hemisphere from 1900-2007, with decreases in spring of up to 15%. Temperatures at the top of the permafrost layer have generally increased since the 1980s in the Arctic by up to 3°C.

- Satellite data from 1978-2007 show that annual average Arctic sea ice extent has shrunk by 2.7% per decade, with larger decreases in summer of 7.4% per decade. Mountain glaciers and snow cover on average have declined in both hemispheres.

- 10,000 years ago until 1750 carbon dioxide(CO2) emissions where relatively stable at 280ppm +/- 20ppm(parts per million).

- From 1750-2005 CO2 emissions rose exponentially to 379ppm.

- A current localized CO2 count from Mauna Loa Observatory(July, 2013) 397.3ppm.

Also visit the Mauna Loa Observatory (data reposted by co2now.org) http://co2now.org/images/stories/data/co2-mlo-monthly-noaa-esrl.pdf for current CO2 counts at that site.

From page 240 of "Peeking at Peak Oil". It is unlikely that the world can produce the oil that is projected to be consumed in most of the SRES scenerios. Therefore the amount of CO2 emissions will probably be less than 37 of the 40 scenerios.

- From 1906-2005 the average yearly temperature worldwide increased by .74 degrees centigrade.