Climate engineering cirrus cloud thinning techniques

Cirrus cloud thinning and stratospheric aerosol injection are geoengineering techniques proposed to mitigate global warming. Cirrus clouds trap heat, and thinning them allows more heat to escape. Sulphate aerosols reflect incoming solar radiation, reducing the amount of sunlight reaching Earth's surface. Both techniques aim to address climate change by reducing global temperatures. Artificial rain, cyclone reduction, and solar wind effects are separate phenomena not addressed by these specific techniques. > Cirrus thinning + stratospheric aerosols = solar radiation management for climate cooling. Answer: (d).