Statistics for air travel

From:         Gordon Watson <>
Organization: Department of Meteorology, University of Edinburgh
Date:         01 Jun 94 14:35:01 
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Does anyone have off the top of their head figures for ( or a 
reference to ) the increase in air travel over the last 30 yrs,
say 1960 - 1990 ??  Miles flown would be ideal, but passenger or
aircraft numbers would be useful.

The reason why I ask is we're running climate models for the last
30 years. We have figures for aircraft emissions for 1990, but
nothing earlier, so we'd like a 'ball park' figure to scale them

Any info would be appreciated,



  Gordon C. Watson,                                    _------_      
                                                      {  {     }     
  Meteorology Department, Edinburgh University,      (__________)    
                          Scotland.                   /  /  /  /