https://iopscience.iop.org/article/10.1088/1748-9326/aba7e7?s=09 https://iopscience.iop.org/article/10.1088/1748-9326/aba7e7?... Here the estimate for solar ra

https://iopscience.iop.org/article/10.1088/1748-9326/aba7e7?s=09 https://iopscience.iop.org/article/10.1088/1748-9326/aba7e7?... Here the estimate for solar radiation management injecting aerosols in the stratosphere is estimated at $18B/year per degree Celsius. For the whole planet. Seems to me pretty cheap, even a private initiative can finance that.