This is a wonderful resource:
Cherry-Pickers Guide to Global Temperature Trends. Each point on the chart represents the trend beginning in September of the year indicated along the x-axis and ending in August 2009. The trends which are statistically significant (p [greater than]0.05) are indicated by filled circles. The zero line (no trend) is indicated by the thin black horizontal line, and the climate model average projected trend is indicated by the thick red horizontal line.
You will need to read Roger’s complete post. I’ll just highlight some examples of how cherry pickers operate. But you can detect their tricks by consulting the above chart.
(…) Here are a few general statements that can be supported with using my Cherry-Pickers Guide:
• For the past 8 years (96 months), no global warming is indicated by any of the five datasets.
• For the past 5 years (60 months), there is a statistically significant global cooling in all datasets.
• For the past 15 years, global warming has been occurring at a rate that is below the average climate model expected warming