Table of Contents

• 1: Know your axes
• 2: Know your colors
• 3: A short history of measuring temperature
• 4: Enough with thermometers and trees already!
• 5: How big are the temperature differences?
• 6: A warming world
• 7: Hockey Stick controversy
• 8: Temperature variability revisited
• 9: Talking about my generation

Talking about my generation

Here is a close-up of the instrumental record just for the last 120 years.

And some statistics:

• Worldwide, 2010 and 2005 are tied as the 2 warmest years on record (beginning 1880)
• The years from 1976 to 2010 have ALL been hotter than the 20th century average
• The ten hottest years on record have all occurred since 1998

By the way, one climate change denier claim is that "it hasn't warmed since 1998." What do you think?

The existence and extent of a Little Ice Age from roughly 1500 to 1850 is supported by a wide variety of evidence including ice cores, tree rings, borehole temperatures, glacier length records, and historical documents.