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The investigation finds calcite effectively blocks UV radiation in high-altitude experiments, suggesting potential for solar radiation management.
This investigation explores the use of calcite (CaCO3) powder, the most common and radiation-resistant form of calcium carbonate, as an environmentally friendly mechanism for solar radiation management by measuring its ability to deflect ultraviolet radiation from the sun. The experiment took place on a high-altitude balloon (HAB) payload. Three sets of laminated calcite sheets with varying concentrations – two with calcite and one as a control – were tested using two different types of sensors contained in a payload box. Our results indicated that both sheets with calcite were effective in blocking UV radiation, setting the foundation for future investigations in the field of stratospheric aerosol injection (SAI) using calcite and other environmentally friendly materials.
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Nare et al. (2025) studied this question.
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