Not exact matches
In their estimate, Hansen and Sato only consider GHGs (
including non-CO2 GHGs) and
surface albedo (
reflectivity) as forcings.
Other potential causes of climate change
include the depletion of stratospheric ozone in recent decades, again through human activities, and global changes in the
surface reflectivity — or albedo — of the planet, as we modify the patterns of vegetation that cover the land.
Proposals
include artificially brightening clouds, increasing the
reflectivity of
surface - level planetary features, or depositing reflective particles in the earth's upper atmosphere.
The albedo of the Earth System,
including the
reflectivity of clouds and of the
surface is estimated to be 70 % 30 % by many experts.