STRATOSPHERIC AEROSOL INJECTION
MARINE CLOUD BRIGHTENING
OTHER CLOUD MODIFICATION
Cancelled
’10
’15
’20
’25
’30
Sunlight through Aerosols
E-PEACE
SPICE
RRAP (MCB)
CLOUDLAB
SATAN
SCoPEx
Make Sunsets
UW MCB
Natural Materials for SAI
REFLECT
MCB in a Complex World
BrightSpark
STRATOSPHERIC AEROSOL INJECTION
MARINE CLOUD BRIGHTENING
OTHER CLOUD MODIFICATION
Cancelled
2008
2010
2015
2020
2025
2030
Sunlight through Aerosols
E-PEACE
SPICE
RRAP (MCB)
CLOUDLAB
SATAN
SCoPEx
Make Sunsets
UW MCB
Natural Materials for SAI
REFLECT
MCB in a Complex World
BrightSpark
STRATOSPHERIC AEROSOL INJECTION
OTHER CLOUD MODIFICATION
MARINE CLOUD BRIGHTENING
Cancelled
2008
2010
2015
2020
2025
2030
Scientific
Sunlight through Aerosols
Scientific
E-PEACE
Scientific, Engineering
SPICE
Scientific, Engineering
RRAP (MCB)
Scientific
CLOUDLAB
Engineering
SATAN
Scientific
SCoPEx
Non-Scientific
Make Sunsets
Engineering
UW MCB
Scientific
Natural Materials for SAI
Engineering
REFLECT
Scientific, Engineering
MCB in a Complex World
Scientific
BrightSpark
A timeline of outdoor SRM experiments
STRATOSPHERIC AEROSOL INJECTION
MARINE CLOUD BRIGHTENING
OTHER CLOUD MODIFICATION
Cancelled
2008
2010
2015
2020
2025
2030
Scientific
Sunlight through Aerosols
Scientific
E-PEACE
Scientific, Engineering
SPICE
Scientific, Engineering
RRAP (MCB)
Scientific
CLOUDLAB
Engineering
SATAN
Scientific
SCoPEx
Non-Scientific
Make Sunsets
Engineering
UW MCB
Scientific
Natural Materials for SAI
Engineering
REFLECT
Scientific, Engineering
MCB in a Complex World
Scientific
BrightSpark
Source: SRM360
SRM360 Tool
Outdoor Experiments Tracker
SRM360’s Outdoor Experiments Tracker lists completed, ongoing, upcoming, and cancelled outdoor experiments related to sunlight reflection methods (SRM), also known as solar geoengineering. These experiments involve testing equipment, releasing materials, or otherwise modifying clouds with the intention to advance SRM research or deployment capabilities, or to deploy SRM. The tracker categorises experiments as scientific (advancing scientific understanding of SRM), engineering (developing equipment or knowledge that could support SRM deployment), or non-scientific. Learn more about outdoor SRM experiments in this accompanying article.
| Project Name | Type | Location | Start Year | Experiment Type | Status |
|---|
Methodology
To be included in this tracker, the experiment had to meet the following criteria:
-
The experiment intended to advance SRM research, deployment capabilities, or to deploy SRM.
-
The relevant SRM approach could be capable of producing a substantial global cooling effect of at least 1°C.
-
Equipment was tested or materials were released outdoors.*
To identify field experiments for this tracker, SRM360 searched through government records, statements by private companies, research project reports, and peer-reviewed scientific articles.
The tracker will be updated on a regular basis.
*In the case of cancelled or upcoming experiments, the planned equipment test or material release was – or is – intended to take place outdoors.