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The feasibility of using an L1 positioned dust cloud as a method of space-based geoengineering

Bewick, Russell and Sanchez Cuartielles, Joan-Pau and McInnes, Colin (2012) The feasibility of using an L1 positioned dust cloud as a method of space-based geoengineering. Advances in Space Research, 49 (7). pp. 1212-1228. ISSN 0273-1177

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    Abstract

    In this paper a method of geoengineering is proposed involving clouds of dust placed in the vicinity of the L1 point as an alternative to the use of thin film reflectors. The aim of this scheme is to reduce the manufacturing requirement for space-based geoengineering. It has been concluded that the mass requirement for a cloud placed at the classical L1 point, to create an average solar insolation reduction of 1.7%, is 7.60x1010 kg yr−1 whilst a cloud placed at a displaced equilibrium point created by the inclusion of the effect of solar radiation pressure is 1.87x1010 kg yr−1. These mass ejection rates are considerably less than the mass required in other unprocessed dust cloud methods proposed and are comparable to thin film reflector geoengineering requirements. Importantly, unprocessed dust sourced in-situ is seen as an attractive scheme compared to highly engineered thin film reflectors. It is envisaged that the required mass of dust can be extracted from captured near Earth asteroids, whilst stabilised in the required position using the impulse provided by solar collectors or mass drivers used to eject material from the asteroid surface.

    Item type: Article
    ID code: 39705
    Keywords: geoengineering , dust cloud, lagrange point , three-body problem, Mechanical engineering and machinery, Motor vehicles. Aeronautics. Astronautics, Aerospace Engineering, Geotechnical Engineering and Engineering Geology, Control and Systems Engineering
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Motor vehicles. Aeronautics. Astronautics
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Technology and Innovation Centre > Advanced Engineering and Manufacturing
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    Depositing user: Pure Administrator
    Date Deposited: 15 May 2012 10:47
    Last modified: 27 Mar 2014 22:07
    URI: http://strathprints.strath.ac.uk/id/eprint/39705

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