Gravitationally bound geoengineering dust shade at the inner Lagrange point

Bewick, R., Sanchez, J.P. and McInnes, C.R. (2012) Gravitationally bound geoengineering dust shade at the inner Lagrange point. Advances in Space Research, 50(10), pp. 1405-1410. (doi:10.1016/j.asr.2012.07.008)

Bewick, R., Sanchez, J.P. and McInnes, C.R. (2012) Gravitationally bound geoengineering dust shade at the inner Lagrange point. Advances in Space Research, 50(10), pp. 1405-1410. (doi:10.1016/j.asr.2012.07.008)

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Publisher's URL: http://dx.doi.org/10.1016/j.asr.2012.07.008

Abstract

This paper presents a novel method of space-based geoengineering which uses the mass of a captured near Earth asteroid to gravitationally anchor a cloud of unprocessed dust in the vicinity of the L1 position to reduce the level of solar insolation at Earth. It has subsequently been shown that a cloud contained within the zero-velocity curve of the largest near Earth asteroid, Ganymed, can lead to an insolation reduction of 6.58% on Earth, which is significantly larger than the 1.7% required to offset a 2 °C increase in mean global temperature. The masses of the next largest near Earth asteroids are found to be too small to achieve the required level of insolation reduction, however, they are significant enough to be used as part of a portfolio of geoengineering schemes.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McInnes, Professor Colin
Authors: Bewick, R., Sanchez, J.P., and McInnes, C.R.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Advances in Space Research
Publisher:Elsevier
ISSN:0273-1177
ISSN (Online):1879-1948

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