摘要:General circulation model computations using a fully coupled ocean–atmosphere model
indicate that increasing cloud reflectivity by seeding maritime boundary layer clouds with
particles made from seawater may compensate for some of the effects on climate of
increasing greenhouse gas concentrations. The chosen seeding strategy (one of
many possible scenarios) can restore global averages of temperature, precipitation
and sea ice to present day values, but not simultaneously. The response varies
nonlinearly with the extent of seeding, and geoengineering generates local changes
to important climatic features. The global tradeoffs of restoring ice cover, and
cooling the planet, must be assessed alongside the local changes to climate features.