Andrew: cc list For biochar, add the concepts of internal rate of return (IRR) and recommended analysis time period (30 years? 100 years?) (as a few of the needed extra parameters, for given types of soil, climate, species, etc). First cost is not the right parameter.
Ron > On Feb 4, 2018, at 5:28 AM, Andrew Lockley <andrew.lock...@gmail.com> wrote: > > Hi > > I'm designing a survey on attitudes to CE, and I'm trying to simplify the > costs estimates by making it per person per year. I've put $1 for SRM and > $100 for CDR - but it occurs to me that this is really very complicated. Has > anyone done any proper research on this? I can't find anything... > > Typically, SRM is costed on a program basis (bn/yr globally) but CDR is > costed per tonne (and volumes are highly variable). > > Issues to roll into this calculation are > * population growth > * future emissions (CDR gets a lot more expensive, if you're still emitting) > * whether temperature stabilises or reduces - and how fast > * experience/cost curve for each approach > * how much heterogeneity to expect (it's likely impractical to expect only a > single CDR to do everything) > > There are probably other factors. This strikes me as something that's > sufficiently useful to be worked up into a paper. > > Andrew > > -- > 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 geoengineering+unsubscr...@googlegroups.com > <mailto:geoengineering+unsubscr...@googlegroups.com>. > To post to this group, send email to email@example.com > <mailto:firstname.lastname@example.org>. > Visit this group at https://groups.google.com/group/geoengineering > <https://groups.google.com/group/geoengineering>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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 geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.