Topic
SRM Approaches
Sunlight reflection methods, also known as solar radiation modification or SRM, describes a set of ideas to limit global warming by reflecting a small amount of sunlight. They range from potential interventions at the surface, to the lower and upper atmosphere, and out in space.
While they raise some similar challenges, all these approaches vary considerably in terms of feasibility and cooling potential and would have distinct impacts on the climate and environment.
This page provides a basic introduction to the various approaches.
Featured Content
Marine Cloud Brightening
Marine Cloud Brightening – or MCB – is an idea to brighten clouds over the ocean to reflect more sunlight back to space. How could it work and why is it being studied?
Stratospheric Aerosol Injection
Stratospheric Aerosol Injection – or SAI – is an idea to create a thin, persistent layer of tiny particles in the upp...
2 mins
Space-based SRM
Objects in space that reflect sunlight away from the Earth would lower the planet’s surface temperature. However, to reflec...
7 min read
Cirrus Cloud Thinning
Cirrus cloud thinning (CCT) would cool the Earth by thinning heat-trapping cirrus clouds. Currently, scientists are not certa...
5 min read
articles
Marine Cloud Brightening
Marine cloud brightening (MCB) is an idea to enhance the reflectivity of low-lying clouds over the oceans. Spraying tiny sea-...
6 min read
Surface Albedo Modification
Surface albedo modification describes a set of ideas to produce a cooling effect by increasing the amount of light reflected ...
7 min read
Cirrus Cloud Thinning
Cirrus cloud thinning (CCT) would cool the Earth by thinning heat-trapping cirrus clouds. Currently, scientists are not certa...
5 min read
Space-based SRM
Objects in space that reflect sunlight away from the Earth would lower the planet’s surface temperature. However, to reflec...
7 min read
Stratospheric Aerosol Injection
Stratospheric aerosol injection (SAI) is an idea to create a layer of tiny reflective particles high in the atmosphere to ref...
7 min read
infographics
Stratospheric aerosol injection
Stratospheric aerosol injection (SAI) is an idea to lower the global temperature by dispersing tiny particles in the stratosp...
An overview of sunlight reflection methods
Sunlight reflection methods (SRM) are hypothetical approaches to lower global temperatures by increasing the amount of sunlig...
Sunlight reflection methods
Sunlight reflection methods (SRM) are hypothetical approaches to lower global temperatures by increasing the amount of sunlight reflected to space.
Marine cloud brightening
Marine cloud brightening (MCB) is an idea to enhance the reflectivity of low-lying clouds over the oceans. MCB may be able to...
videos
Marine Cloud Brightening
Marine Cloud Brightening – or MCB – is an idea to brighten clouds over the ocean to reflect more sunlight back to space. How could it work and why is it being studied?
2 mins
Stratospheric Aerosol Injection
Stratospheric Aerosol Injection – or SAI – is an idea to create a thin, persistent layer of tiny particles in the upp...
2 mins