Re: [geo] The influence of learning about (CDR) on support for mitigation policies

Dear Rob, I am sorry to see that you still seem confused between what is the best path to addressing the climate change challenge we face and what are the practical problems in achieving it. An even simpler statement of what Klaus wrote is that in an emergency one puts all ones resources into a

Re: [geo] The influence of learning about (CDR) on support for mitigation policies

Let me clarify a point. CCS is not just geological storage, it is not just point source capture at power plants and CCS in my view is necessary to balance the books. If we do not capture CO2 and store it safely and permanently, we will not manage 2 degrees. We may make 5 degrees without it.

Re: [geo] AGU Position Statement on Geoengineering: Call for Comments

I think discussion on-list will help everyone formulate their comments. My initial thoughts are that the document is ok, but is insufficiently robust. Calling for more research is glib and easy. I suggest that there's a need for language like the following to be inserted: Dangerous climate

Re: [geo] The influence of learning about (CDR) on support for mitigation policies

There is no question there is room for such an infrastructure. A carbon sheet of all past emissions is a film 1 mm thick wrapped around the planet. My question is how long will it take human societies to take that much carbon back. Klaus From: Peter Eisenberger

[geo] Re: Why Procedural Justice Matters for Climate Engineering

This piece, by Toby Svoboda, was originally published by the Forum for Climate Engineering Assessment: http://ceassessment.org/procedural-justice/ On Thursday, August 24, 2017 at 1:54:15 PM UTC-4, Andrew Lockley wrote: > > Poster's note : deja vu,

Re: [geo] Slicing the pie: how big could carbon dioxide removal be? - Psarras - 2017 - Wiley Interdisciplinary Reviews: Energy and Environment - Wiley Online Library

The timeframe of the analysis is not clear. The article cites estimates of "upper limits" on CDR methods, but what is the nature of these limits - economic, physical, biological? Some of these estimates refer to 2100, but a clear timeframe does not appear to be explicitly declared, so I don't know

Re: [geo] Slicing the pie: how big could carbon dioxide removal be? - Psarras - 2017 - Wiley Interdisciplinary Reviews: Energy and Environment - Wiley Online Library

Some technologies have input costs that are experiencing predictable costs falls - eg DAC / olivine grinding, with energy input costs falling according to Swanson's law. There's probably equivalents in other fields, eg robotic labour, etc. Agricultural robots are a significant field, and will

Re: [geo] Re: Why Procedural Justice Matters for Climate Engineering

All: I can’t emphasize strongly enough why the piece by Svoboda is critically important – as a matter of democratic governance and because we are not scientifically, socially, and (particularly) ethically omniscient. Svoboda states: * There is an ethical obligation to comply with

Re: [geo] The influence of learning about (CDR) on support for mitigation policies

Forwarded due to tech gremlins : *From:* Robert H. Socolow *Sent:* Friday, August 25, 2017 10:57 AM *To:* 'klaus.lack...@asu.edu'; peter.eisenber...@gmail.com; Greg Rau *Cc:* Geoengineering; vcar...@umich.edu *Subject:* RE: [geo] The influence of learning about (CDR) on support for mitigation

RE: [geo] Slicing the pie: how big could carbon dioxide removal be? - Psarras - 2017 - Wiley Interdisciplinary Reviews: Energy and Environment - Wiley Online Library

Olaf, You’ve likely explained this, but what grain size distribution does $2/ton provide? Maybe you already have a trade-off table listing $__/ton for various grain sizes. With such a table, you could make optimization analysis on ways to make the reaction faster. For example