RE: [geo] Help: What do we know and what don't we know about solar geoengineering?

My ill structured ramblings on unknowns below * Aerosol coalescence in steady state, and resulting sedimentation * sedimentation effect on clouds, especially cirrus *steady state ozone loss *sedimentation environmental impacts of novel, engineered and/or insoluble particles * MCB plume behaviour

RE: [geo] Help: What do we know and what don't we know about solar geoengineering?

Hi Ken, We tried to write some down in our Earth’s Future piece last year, at least for stratospheric aerosols MacMartin, D. G., B. Kravitz, J.C.S. Long, and P.J. Rasch, “Geoengineering with stratospheric aerosols: what do we not know after a decade of research?” Earth’s Future, 4,

[geo] Climeworks Wins First Helena Prize

https://globenewswire.com/news-release/2017/07/19/1054149/0/en/Climeworks-Wins-First-Helena-Prize.html [image: helena logo.jpg] Climeworks Wins First Helena PrizeWinner Is First Company to Develop and Install a Commercial Plant to Capture Carbon Dioxide from the Air *July 19, 2017 08:50 ET* |

Re: [geo] Help: What do we know and what don't we know about solar geoengineering?

Possible bullet points • It is virtually impossible to use SRM as an effective weapon. • However, some countries may see it as a weapon esp if deployed unilaterally. On 19 July 2017 at 9:41:57 , Klaus Lackner (klaus.lack...@asu.edu) wrote: What are the most important things we know about solar

Re: [geo] Help: What do we know and what don't we know about solar geoengineering?

Only thing I'd add to Klaus's nice summary is this: We don't know of a model for decision-making on a global intervention on any other issue yet that can apply neatly to this kind of action. - CFC/ozone diplomacy was about mitigating something, not adding something. - Nuclear test ban same. So

Re: [geo] Help: What do we know and what don't we know about solar geoengineering?

Hello Ken, my two pence, not repeating Klaus' input. /1. What are the most important things we know about solar geoengineering?/ some techniques can cool the planet, rapidly and in a reversible way (although the impacts may not all be reversible) there are side effects, eg on precipitation

Re: [geo] Help: What do we know and what don't we know about solar geoengineering?

What are the most important things we know about solar geo-engineering? * It can be done, it is comparatively cheap, but probably not as cheap as people think * It will cool the planet, but it will not simply cancel out greenhouse gas additions * There is more than one way of doing

[geo] Hansen et al weigh in on negative emissions

https://www.earth-syst-dynam.net/8/577/2017/esd-8-577-2017.pdf (unable to paste in abstract accurately) -- 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

[geo] Help: What do we know and what don't we know about solar geoengineering?

Folks, This Sunday evening, I am supposed to help kick off a discussion about what we know and what we don't know about solar geoengineering. https://www.grc.org/programs.aspx?id=17348 It would be helpful if some people on this group could attempt to answer these questions: *1. What are the

[geo] Ex-NASA scientists says we must remove CO2 from atmosphere | Daily Mail Online

Poster's note : seeing this in the Daily Mail is astonishing. It's like a print version of Fox News, for embittered boomers. http://www.dailymail.co.uk/sciencetech/article-4704130/To-safeguard-Earth-remove-CO2-atmosphere.html Share this article - Facebook