Climate Change and Geoengineering
…Geoengineering is defined as ‘intentional large scale manipulation of the global environment’, e.g. by altering climate with the primary intention of reducing undesired climate change caused by human influences. ‘Geoengineering schemes seek to mitigate the effect of fossil-fuel combustion on the climate without abating fossil fuel use; for example by placing shields in space to reduce the sunlight incident on the Earth.’ (Keith D.W. 1999. Geoengineering, Encyclopedia of Global Change, New York).
In relation to ‘geoengineering’, the ‘Climate Change 2001’ report of the Intergovernmental Panel on Climate Change confirms that it ‘includes the possibility of engineering the earth’s climate system by large-scale manipulation of the global energy balance. It has been estimated, for example, that the mean effect on the earth surface energy balance from a doubling of CO2 could be offset by an increase of 1.5% to 2% in the earth’s albedo, i.e. by reflecting additional incoming solar radiation back into space…. Teller et al. (1997) found that ~107 t of dielectric aerosols of ~100 nm diameter would be sufficient to increase the albedo of the earth by ~1%. They showed that the required mass of a system based on alumina particles would be similar to that of a system based on sulphuric acid aerosol…(They) demonstrate that use of metallic or optically resonant scatterers can, in principle, greatly reduce the required total mass of scattering particles required.”
If, as very many indications suggest, such programmes and such ideas are already under implementation on a very large scale and outside the framework of international law, then they must either be stopped or legalized.
There is no point in ecological organizations disagreeing with them ‘behind closed doors’ and in public confining themselves to objections at the ‘philosophical’ level.
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