Presidential report advises geoengineering solar radiation management (SRM) and investigated injecting condensation or freezing nuclei into the atmosphere to counteract the effects of increasing carbon dioxide.
According to Manabe and Strickler (1964) [1] the absorption and re-radiation of infrared by high cirrus clouds (above five miles) tends to heat the atmosphere near the earth's surface. Under some circumstances, injection of condensation or freezing nuclei will cause cirrus clouds to form at high altitudes. This potential method of bringing about climate changes needs to be investigated as a possible tool for modifying atmospheric circulation in ways which might counteract the effects of increasing atmospheric carbon dioxide. [2]