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

Know your colors

This graph includes a ton of information -- that's why 4 different colors are needed to keep the different data series separate. See if you can match the data series with its color:

Temperature estimations from years BEFORE the invention and standardization of thermometers

Temperature measurements from the years AFTER the standardization of thermometers

The variability (or uncertainty) around temperature measurements in any given year

A longer-term, smoothed out version of the yearly data.