Global warming: a sceptic's perspective

E. Linacre and B. Geerts


The scientific community does not question that global mean surface temperatures have increased during the 20th century, and that they will continue to increase significantly during the next century, as a result of anticipated increases in greenhouse gas concentrations. Yet the community also admits that the magnitude of the change is uncertain, for instance because of the uncertainties about the indirect radiative forcing of aerosols.

A few people have expressed scepticism towards this generally accepted view, and some of the arguments are listed below. We have provided 'mainstream' responses to each of the six arguments.

It will be interesting to see comments on Idso's paper (3) by representatives of the mainstream view, that the enhanced greenhouse effect is much more serious.



  1. Wentz, F. J. and M. Schabel 1998. Effects of orbital decay on satellite- derived lower-tropospheric temperature trends. Nature, 394, 661.
  2. Mann, M.E., R.S. Bradley and M.K. Hughes 1998. Global-scale temperature patterns and climate forcing over the past six centuries. Nature, 392, 779-803.
  3. Idso, S.B. 1998. CO2-induced global warming: a skeptic’s view of potential climate change. Climate Research, 10, 69-82.
  4. Weir, A. 1995. 100 years ago: Arrhenius moonlights on the greenhouse effect. Aust. Meteor. Ocean Soc. Bull., 8, 109-10
  5. Willson, R.C. 1997. Total solar irradiance trend during Solar Cycles 21 and 22. Science, 277, 1963-5.