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.
