Greg, Keith, list 1. An early version of the paper is at: http://orbi.ulg.ac.be/bitstream/2268/12933/1/Archer-etal-Preprint.pdf
2. There can be a big speedup with fine rock dust (I have read). Someone must have that speed-up data handy. Ron On Feb 19, 2014, at 11:10 AM, Greg Rau <[email protected]> wrote: > True, employing weathering to consume all of our CO2 is a daunting task, yet > that's exactly what will happen over the next 100 kyrs if we do nothing: > http://www.annualreviews.org/doi/abs/10.1146/annurev.earth.031208.100206 > So the (engineering) task is to see when, where, and how we can > cost-effectively accelerate this natural process, realizing that this isn't > going to singlehandedly solve the problem (soon enough) either, and > investigate/employ a lot of other technologies, actions, and behaviors as > well to help solve the problem. > Greg > > From: Keith Henson <[email protected]> > To: "Schuiling, R.D. (Olaf)" <[email protected]> > Cc: Geoengineering <[email protected]> > Sent: Wednesday, February 19, 2014 8:50 AM > Subject: Re: [geo] Re: What Is Climate Geoengineering? Word Games in the > Ongoing Debates Over a Definition > > On Wed, Feb 19, 2014 at 12:37 AM, Schuiling, R.D. (Olaf) > <[email protected]> wrote: > > Therefore I say: Do as nature has always done it, by weathering basic > > silicates. Only because we are messing up the CO2 system, the weathering > > must move up to enhanced weathering, Olaf schuiling > > Ah, given the volume of coal and oil burned and the amount of > weathering needed to compensate, this seems implausible to me. > > How many tons of rock do you need to crush to take up the CO2 from a > ton of coal? How much energy does this take? > > Keith Henson > (Just an engineer, not a scientist) > > -- > 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/groups/opt_out. > > > > -- > 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/groups/opt_out. -- 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/groups/opt_out.
