| 摘要 |
A method is provided for mitigating global warming. In such method, fine particles can be injected or dispersed into the stratosphere. The particles can be characterized by relatively low emissivity in the visible spectrum and relatively high emissivity at thermal infrared wavelengths. In a particular embodiment, the fine particles can consist predominantly of silica. In a particular embodiment, the fine silica particles can include diatomaceous earth (DE), which may or may not be heat treated before injection and dispersal within the stratosphere. In one embodiment, the fine silica particles can include at least one of silica fume, fumed silica, or powdered quartz. The fine silica particles may have an average diameter ranging between 5 nanometers and 100 microns.
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