An L1 positioned dust cloud as an effective method of space-based geoengineering

R. Bewick, J.P. Sanchez, C.R. McInnes

Research output: Contribution to conferencePaper

1 Citation (Scopus)

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 2.93x109 kg yr-1 whilst a cloud placed at a displaced equilibrium point created by the inclusion of the effect of solar radiation pressure is 8.87x108 kg yr-1. These mass ejection rates are considerably less than the mass required in other unprocessed dust cloud methods proposed and, for a geoengineering period of 10 years, they are comparable to thin film reflector geoengineering requirements. 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.
LanguageEnglish
PagesIAC10-D1.1.7
Publication statusPublished - 27 Sep 2010
EventInternational Astronautical Congress, IAC 2010 - Prague, Czech Republic
Duration: 27 Sep 20101 Oct 2010

Conference

ConferenceInternational Astronautical Congress, IAC 2010
CityPrague, Czech Republic
Period27/09/101/10/10

Fingerprint

Dust
dust
Asteroids
asteroid
Thin films
Incident solar radiation
Solar collectors
Solar radiation
insolation
Earth (planet)
solar radiation
method

Keywords

  • space-based geoengineering
  • near earth asteroids
  • dust cloud

Cite this

Bewick, R., Sanchez, J. P., & McInnes, C. R. (2010). An L1 positioned dust cloud as an effective method of space-based geoengineering. IAC10-D1.1.7. Paper presented at International Astronautical Congress, IAC 2010, Prague, Czech Republic, .
Bewick, R. ; Sanchez, J.P. ; McInnes, C.R. / An L1 positioned dust cloud as an effective method of space-based geoengineering. Paper presented at International Astronautical Congress, IAC 2010, Prague, Czech Republic, .
@conference{dfb06d413fe4405a8dc7b136ebb939e9,
title = "An L1 positioned dust cloud as an effective method of space-based geoengineering",
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 2.93x109 kg yr-1 whilst a cloud placed at a displaced equilibrium point created by the inclusion of the effect of solar radiation pressure is 8.87x108 kg yr-1. These mass ejection rates are considerably less than the mass required in other unprocessed dust cloud methods proposed and, for a geoengineering period of 10 years, they are comparable to thin film reflector geoengineering requirements. 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.",
keywords = "space-based geoengineering, near earth asteroids, dust cloud",
author = "R. Bewick and J.P. Sanchez and C.R. McInnes",
year = "2010",
month = "9",
day = "27",
language = "English",
pages = "IAC10--D1.1.7",
note = "International Astronautical Congress, IAC 2010 ; Conference date: 27-09-2010 Through 01-10-2010",

}

Bewick, R, Sanchez, JP & McInnes, CR 2010, 'An L1 positioned dust cloud as an effective method of space-based geoengineering' Paper presented at International Astronautical Congress, IAC 2010, Prague, Czech Republic, 27/09/10 - 1/10/10, pp. IAC10-D1.1.7.

An L1 positioned dust cloud as an effective method of space-based geoengineering. / Bewick, R.; Sanchez, J.P.; McInnes, C.R.

2010. IAC10-D1.1.7 Paper presented at International Astronautical Congress, IAC 2010, Prague, Czech Republic, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - An L1 positioned dust cloud as an effective method of space-based geoengineering

AU - Bewick, R.

AU - Sanchez, J.P.

AU - McInnes, C.R.

PY - 2010/9/27

Y1 - 2010/9/27

N2 - 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 2.93x109 kg yr-1 whilst a cloud placed at a displaced equilibrium point created by the inclusion of the effect of solar radiation pressure is 8.87x108 kg yr-1. These mass ejection rates are considerably less than the mass required in other unprocessed dust cloud methods proposed and, for a geoengineering period of 10 years, they are comparable to thin film reflector geoengineering requirements. 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.

AB - 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 2.93x109 kg yr-1 whilst a cloud placed at a displaced equilibrium point created by the inclusion of the effect of solar radiation pressure is 8.87x108 kg yr-1. These mass ejection rates are considerably less than the mass required in other unprocessed dust cloud methods proposed and, for a geoengineering period of 10 years, they are comparable to thin film reflector geoengineering requirements. 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.

KW - space-based geoengineering

KW - near earth asteroids

KW - dust cloud

UR - http://www.iafastro.com/index.html?title=IAC2010

M3 - Paper

SP - IAC10-D1.1.7

ER -

Bewick R, Sanchez JP, McInnes CR. An L1 positioned dust cloud as an effective method of space-based geoengineering. 2010. Paper presented at International Astronautical Congress, IAC 2010, Prague, Czech Republic, .