"Perturbation experiments" refers to scientific tests or investigations that intentionally disrupt or disturb a system in order to understand its behavior or response to such disturbances. Full definition
Now, a team of researchers from the Harvard School of Engineering and Applied Sciences (SEAS) has outlined how a small - scale «stratospheric perturbation experiment» could work. (sciencedaily.com)
The following topics were covered: seawater carbonate chemistry, experimental design of perturbation experiments, measurements of CO2 - sensitive processes and data reporting and usage. (epoca-project.eu)
Waliser, D.E., K.M. Lau, and J.H. Lim, 1999: The influence of coupled sea surface temperatures on the Madden — Julian oscillation: A model perturbation experiment. (ipcc.ch)