Climate Change Data (roll curser over pic, go to "Full Gallery")

The UU-UNO Climate Portal posts reliable data relevant to climate change and global warming. Click HERE for more information.

Here are the most important data:

1. Graphic below: Global average temperature data since 1880 from GISS NASA.

Note that the global average temperature since 1980 has a definite upward trend. This is the definition of recent global warming. Fluctuations around this upward global warming trend are also present. In particular, 1998 had a high temperature due to a huge El Nino heating effect superimposed on the global warming trend. El Nino which heats the earth (and its counterpart La Nina which cools the earth) produce fluctuations that obscure but do not hide the upward trend due to man-made global warming. The GISS/NASA data have 2010 tied with 2005 as the hottest year. 2009 is next tied with 1998 and several other years.

2. Temperature reconstructions over the last 1,300 years. Click HERE

3. Carbon Dioxide (top graphic) and other greenhouse gases over the last 10,000 years.Click HERE