Dr Tuck helpfully provided the following answers to the question of possible SRM interaction with atmospheric anomalies. I'd greatly appreciate further discussion of these comments :
Large meteorite airbusts (eg Tunguska) Search Toon OB. Almost certainly produced a lot of NOx, since shockwave would have been >Mach 6 Northern lights Probably way too high to do much to the stratosphere, except maybe at centre of winter polar vortex. Big effects in mesosphere. Solar storms / coronal mass ejection impact See previous answer. Tropopause folding events Very important, much work done in last 50 years. E F Danielsen, J Atmos Sci (1968) is seminal and instructive. See also WMO Global Research and Ozone Monitoring Report No. 16, Chapter 5 (1986). Much recent work by NCAR and Mainz groups in J Geophys Res – Atmospheres and in Atmos Chem Phys. The OH hole over the pacific Need a lot more observations to confirm the reality. Super-large wildfires (which apparently have plumes which affect the stratosphere) Search pyrocumulus and SAGE 3 for satellite data and CRYSTAL-FACE 2004 for aircraft data, authors E Ray + K H Rosenlof + EC Richard especially. Nuclear detonations P Goldsmith et al., Nature 244, 545-551 (1973), “Nitrogen oxides, nuclear weapon testing, Concorde and stratospheric ozone” is a good place to start. The history can be traced through the papers that cite it, right up to last month by some Russians, who have a long history in this field. Industrial disasters (eg Bhopal) Can’t help Space rocket exhaust Ross, MN et al., 2000, Observation of stratospheric ozone depletion associated with Delta II rocket emissions, Geophys Res Lett 27, 2209-2212. On 3 Aug 2014 14:15, "Andrew Lockley" <[email protected]> wrote: > Hi > > At the summer school something came up in discussion which concerned > me, but couldn't fully articulate my concerns at the time. > > There's a number of (potential) processes in the atmosphere which are > unusual or anomalous. I don't know much about the physics or > chemistry of how these might interact with SRM, but I'm still > concerned that maybe there are problems with this (like we discovered > to our cost with CFCs and polar stratospheric clouds) > > I've made a preliminary list of some below > > Large meteorite airbusts (eg Tunguska) > Northern lights > Solar storms / coronal mass ejection impact > Tropopause folding events > The OH hole over the pacific > Super-large wildfires (which apparently have plumes which affect the > stratosphere) > Nuclear detonations > Industrial disasters (eg Bhopal) > Space rocket exhaust > > I'm sure there are others - can anyone add to this? I really can't > comment in any kind of depth about what any of the above might mean > for SRM, but I hope someone else can. > > Thanks > > A > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
