What is the main purpose of Solar Radiation Management (SRM)?

The main purpose of Solar Radiation Management (SRM) is to reflect the sun's energy back into space. SRM is a type of geoengineering that aims to counteract climate change by managing the Earth's solar radiation balance. By reflecting a portion of sunlight away from the Earth, SRM seeks to reduce the amount of solar energy that contributes to global warming. This approach has the potential to lower temperatures and mitigate some of the adverse effects of climate change without necessarily reducing greenhouse gas concentrations in the atmosphere.

The other options do not align with the fundamental objectives of SRM. Increasing solar energy absorption would not be beneficial in the context of addressing climate change; instead, it would exacerbate warming. Reducing solar panel costs pertains to the economics and accessibility of renewable energy technology rather than managing solar radiation directly. Enhancing greenhouse gases is contrary to the goal of SRM, which is focused on reflecting sunlight to combat the warming effect of these gases, rather than increasing them.