Climate models forecast increasing temperatures on earth because of increasing levels of atmospheric CO2, but observational data appears to contradict this claim. 

Subsequent to publishing the feature ”The Fluid Envelope - A Case Against Climate Alarm“ by Dr. Richard Lindzen, we received an email from a science journalist questioning one of the central assertions in Lindzen’s report.  The writer wanted to know on what basis Dr. Lindzen was claiming there has been no significant warming in the last 10+ years.  In response, Lindzen emailed the following table, showing temperature trends for the last 27 years.  This data is based on global (including over the ocean) average temperature readings per year, per altitude, as reported by the U.K.’s Hadley Climatic Research Unit:

altitude (meters/feet)          hPa         Trend  (C/decade)
24,000/79,000                       30          -0.84
20,000/65,500                       50          -0.76
16,000/52,500                     100          -0.35
14,000/46,000                     150          -0.12
12,000/40,000                     200         -0.01
9,100/30,000                       300           0.10
6,500/21,500                        500          0.05
3,000/10,000                       700           0.06
1,500/5000                           850          0.08
zero (surface)                      1,000        0.13    (from HadCRU3)

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