Gravitationally bound geoengineering dust shade at the inner Lagrange point
| Autor: | Colin R. McInnes, Russell Bewick, Joan Pau Sánchez |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Insolation
020301 aerospace & aeronautics 0303 health sciences Atmospheric Science Near-Earth object Offset (computer science) Global temperature TL business.industry Aerospace Engineering Lagrangian point Astronomy and Astrophysics 02 engineering and technology Astrobiology 03 medical and health sciences Geophysics 0203 mechanical engineering Space and Planetary Science General Earth and Planetary Sciences Environmental science TJ Geoengineering business 030304 developmental biology |
| Zdroj: | Advances in Space Research |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/j.asr.2012.07.008 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect