Make sure to change the GOES temperatures from Celcius to Fahrenheit when using the Relative Humidity calculator. Pick a program and have a listen. In 1991, a practical patent for stratospheric Welsbach seeding for reduction of global warming was filed by the Hughes aircraft company. Besides reflecting incoming sunlight, Welsbach materials are oxides of metals that convert heat trapped by greenhouse gases near the surface of the earth into far-infrared wavelengths that radiate into space. The Hughes patent suggests that these very tiny metal flakes could be added to the fuel of jet airliners, so that the particles would be emitted from the jet engine exhaust while the airliner was at its cruising altitude.
Aluminum oxide can withstand temperatures far higher than jet engine exhausts.
While highly abrasive in larger sizes, a former engineer for Alcoa aluminum says that aluminum in the 10 to 100 micron sizes called for in the sunscreen patent would simply polish jet turbine blades without harming them. The engineer added that this very fine, talcum-like aluminum powder would appear as a pure white plume in the sky. A method is described for reducing atmospheric or global warming resulting from the presence of heat-trapping gases in the atmosphere, i.e., from the greenhouse effect. Such gases are relatively transparent to sunshine, but absorb strongly the long-wavelength infrared radiation released by the earth. GOES Satellite Image of High Altitude Grid-Chemtrails over Wisconsin to Iowa just after sunrise.