Cooling the Earth with CO2 filled containers in space

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https://arxiv.org/abs/2401.07829

Authors

Orfeu Bertolami, Clovis Jacinto de Matos

https://doi.org/10.48550/arXiv.2401.07829

15 January 2024

Abstract 

We argue that geostationary (GEO) reflective containers filled with CO2 could be used as shading devices to selectively cool areas on Earth's surface. This proposal would be an interesting addition to the recently discussed suggestion of dumping CO2 to space through the well of a space lift \cite{OB2023}. We also explore the possibility of producing propellants in GEO out of greenhouse gases expelled from the space lift. Finally, we discuss the much less effective idea of filtering the most prominent infrared bands of the incoming solar radiation using the CO2 wrapped in transparent vessels.

Source: arXiv