Alan - I doubt there's any real disagreement here, but just a clarification; climate variability/noise is irrelevant to the question of whether some form of SRM can be tested, but of course critical to the question of how long it would take to detect a signal. If the goal is to estimate changes on a global scale, that will take decades and significant forcing levels (we have a paper under review on this subject that puts numbers on that trade-off). Other than the moral hazard, I see no basic difference between testing this, and any other experiment in any other field of engineering or science. Clearly with one Earth, I agree with learning everything we can with computer testing first, but if we ever did want to do this in full-scale, I'd rather start small and learn something rather than just turning it on and hoping for the best.
doug On Sep 27, 11:44 am, Alan Robock <[email protected]> wrote: > Dear Ken, > > I think you are being rather picky with words. In any case, I never > said it cannot be tested. I said it cannot be fully tested in a > real-world in situ experiment without full-scale implementation, because > the climate signal will be drowned out by chaotic climate variations and > because injecting into a pristine stratosphere cannot test injecting > into an existing cloud. Of course computers can be used for testing. > That is what I do, and I advocate much more of it. The statement below > refers to in situ experimentation. > > Alan > > Alan Robock, Professor II (Distinguished Professor) > Editor, Reviews of Geophysics > Director, Meteorology Undergraduate Program > Department of Environmental Sciences Phone: +1-732-932-9800 x6222 > Rutgers University Fax: +1-732-932-8644 > 14 College Farm Road E-mail: [email protected] > New Brunswick, NJ 08901-8551 USA http://envsci.rutgers.edu/~robock > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
