Climatic Change

, Volume 5, Issue 4, pp 315–320 | Cite as

The pre-industrial carbon dioxide level

  • T. M. L. Wigley


Recent indirect data and direct measurements from ice cores point towards a ‘pre-industrial’ CO2 level of around 260–270 ppmv, considerably below the commonly assumed value of 290 ppmv. Early measurements from the southern hemisphere tend to favour the lower value.


Dioxide Carbon Dioxide Direct Measurement Southern Hemisphere Early Measurement 
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Copyright information

© D. Reidel Publishing Company 1983

Authors and Affiliations

  • T. M. L. Wigley
    • 1
  1. 1.Climatic Research Unit, University of East AngliaNorwichEngland

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