Re: [geo] A critical discourse analysis of geoengineering advocacy

Paywall. Anyone have a copy? - Greg From: Andrew Lockley andrew.lock...@gmail.com To: geoengineering geoengineering@googlegroups.com Sent: Tue, February 19, 2013 4:47:34 PM Subject: [geo] A critical discourse analysis of geoengineering advocacy Critical

[geo] Weathering CO2

http://onlinelibrary.wiley.com/doi/10.1002/rog.20004/abstract 1. Enhanced Chemical Weathering as a Geoengineering Strategy to Reduce Atmospheric Carbon Dioxide, a Nutrient Source and to Mitigate Ocean

RE: [geo] Re: Nickel nanoparticles catalyse reversible hydration of carbon dioxide for mineralization carbon capture and storage OR Sea Urchins May Save the World

Anyone have an e-copy of Siller and Bhaduri? Still unclear how catalysts are a panacea for CO2 air capture. There still needs to be a chemical driving force that transfers gas into solution and keeps it there. Adding CA, nano particles, etc to water doesn't magically consume CO2. You've got to

Re: [geo] CDR money in DE-FOA-0000785?

Thanks, Mark. To quote the FOA: A market-based solution to improve the economics of CO2 capture includes the utilization of captured CO2 for EOR to reduce anthropogenic CO2 emissions from coal-based power generation sources while improving energy security. A National Energy Technology

[geo] Holdren et al weigh in

Whitehouse science advisers offer their views of (anthro?) climate change mitigation/management - letter here*. Adaptation (climate preparedness) prominently appears as the Plan B (actually item # 1) to failed CO2 policy/technology, ignoring the possibility of post-emissions mitigation or SRM.

Re: [geo] Holdren et al weigh in

. From: RAU greg gh...@sbcglobal.net To: geoengineering@googlegroups.com Sent: Fri, March 22, 2013 9:25:15 PM Subject: [geo] Holdren et al weigh in Whitehouse science advisers offer their views of (anthro?) climate change mitigation/management - letter here*. Adaptation (climate preparedness

Re: [geo] The Truth About Geoengineering | Foreign Affairs

carbon-sucking zooplankton - the authors have a real scoop there, unless they meant phytoplankton. Unfortunately, The Truth... is paywalled. Greg From: Andrew Lockley andrew.lock...@gmail.com To: geoengineering geoengineering@googlegroups.com Sent: Thu, March

Re: [geo] Adam Corner – On geoengineering

Thanks, Andrew. As for the title's question ..are humans the ones who are out of control? the answer is obviously yes otherwise we wouldn't be having a discussion about increasing CO2 and it's global consequences and needed remedies. It is the ongoing failure of social, political, and cultural

Re: [geo] Re: Asymmetric forcing from stratospheric aerosols impacts Sahelian rainfall : Nature Climate Change

Thanks Oliver. Just to clarify from the link, ETC's stated Plan A is: pull out and dust off the many practical proposals that have been around for decades that would plant trees, push back the Sahara, and support sustainable agricultural strategies in the region. And, if that’s not enough

[geo] More on Geoengineering in Africa

Actually, biogeoenineering as described in this fascinating article: http://www.sciencemag.org/content/339/6127/1618.abstract and in the media here: http://www.wired.com/wiredscience/2013/03/fairy-circle-termites/

[geo] Aerosol geography and radiative forcing

Little net clear-sky radiative forcing from recent regional redistribution of aerosols * D. M. Murphyhttp://www.nature.com/ngeo/journal/v6/n4/full/ngeo1740.html#auth-1 Nature Geoscience 6, 258–262 (2013) doi:10.1038/ngeo1740 Received 12 November 2012 Accepted 22 January 2013 Published

[geo] Biochar: Downstream effects

Press Release 13-069 Where Does Charcoal, or Black Carbon, in Soils Go? Scientists find surprising new answers in wetlands such as the Everglades [Charred boreal forest after a fire] Charred boreal forest after a fire has raged: where does the charcoal go? Credit and Larger

[geo] RE: Biochar: Downstream effects

Here's the Science link: http://www.sciencemag.org/content/340/6130/345.abstract From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Rau, Greg [r...@llnl.gov] Sent: Thursday, April 18, 2013 10:56 PM To: geoengineering

Re: [geo] “Climate Engineering – Saving the Sky, Or Playing God? | IASS Potsdam

Thanks for the kind reminder/invitation, Andrew. Unfortunately, my non-existant travel budget forbids me from attending the event. Perhaps there will be reruns on YouTube. As for the question Are people allowed to put their hand on the climate?, I might remind the participants that is exactly

[geo] A critical evaluation of volcanic cooling

Atmos. Chem. Phys., 13, 3997-4031, 2013 www.atmos-chem-phys.net/13/3997/2013/ doi:10.5194/acp-13-3997-2013 © Author(s) 2013. This work is distributed under the Creative Commons Attribution 3.0 License. An empirical model of global climate – Part 1: A critical evaluation of volcanic cooling T.

Re: [geo] Haida readying for second round of iron dumping in ocean - News - Times Colonist

Or could the SRM crowd offer some solutions? Drop the iron out of the sky (planes, rockets, balloons etc, launched from secure land sites? Simulate volcanic dust?) Monitor the results from satellite and by sensors mounted on commercial cargo ships normally traversing the patch. Perhaps more

[geo] New NRC study on Geoengineering

Dear Colleagues: The Board on Atmospheric Science and Climate is pleased to announce the formation of a new study committee, the Geoengineering Climate: Technical Evaluation and Discussion of Impacts. This committee is charged to evaluate what is currently known about the science of

[geo] Warming-induced increase in aerosol number concentration likely to moderate climate change

Warming-induced increase in aerosol number concentration likely to moderate climate change * Pauli Paasonenhttp://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#auth-1, * Ari Asmihttp://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1800.html#auth-2, * Tuukka

Re: [geo] SECURITY UPDATE : Chemtrails/conspiracy rally planned for 'Hack the Sky' Caldeira talk.

Thanks for the warning, Andrew, but I risked going anyway without my body guards, and glad I did. The chem trail folks were indeed there and at times voiced their agitation over perceived major sky hacking already ongoing, but neither Ken nor Clive accommodated their fears. I think the debate

Re: [geo] SECURITY UPDATE : Chemtrails/conspiracy rally planned for 'Hack the Sky' Caldeira talk.

-geoengineering folk had any minds changed over anything said? Not sure those folks had there minds changed, but I think those on the fence got a better understanding of the issues and why GE needs to be on the table. Ron From: RAU greg gh...@sbcglobal.net

[geo] 400 ppm: Get used to it

Lots of hand-wringing here from our fellow scientists (below), but no mention of Plan B's - Scientists say that unless far greater efforts are made soon, the goal of limiting the warming will become impossible without severe economic disruption. “If you’re looking to stave off climate

Re: comment Re: [geo] Fw: [CAN-talk] Outcome statement of Climate Space at the World Social Forum in Tunisia

Thanks Emily (Janet?). I think the title says it all: To Reclaim Our Future, We Must Change the Present. Our Proposal for Changing the System AND NOT THE CLIMATE Indeed, this would appear to be a strategy calling for social and political (re)engineering, with questionable relevance to

RE: [geo] Fw: [CAN-talk] Outcome statement of Climate Space at the World Social Forum in Tunisia

Thanks Emily (Janet?). I think the title says it all: To Reclaim Our Future, We Must Change the Present. Our Proposal for Changing the System AND NOT THE CLIMATE Indeed, this would appear to be a strategy calling for social and political (re)engineering, with questionable relevance to climate

Re: [geo] Grist magazine on geoengineering

Just to follow up, we may not entirely understand the system but we know that elevated air CO2 (sand) is not good for it. Job 1 is then to stop air CO2 from increasing. Given that we have thus far failed to do this, what are the ethics of actively discouraging research on any CO2 management

[geo] More on air capture

We have to invest in technology to remove the CO2 already in the atmosphere. http://www.slate.com/articles/technology/future_tense/2013/05/direct_air_carbon_capture_technology_must_be_developed_to_help_fight_climate.html Greg -- You received this message because you are subscribed to the

[geo] Thought for the day

It ought to be remembered that there is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. Because the innovator has for enemies all those who have done well under the old

Re: [geo] Opinion: Dreams we cannot afford, by Russ George — The Daily Climate

Thanks, Andrew. A couple of comments: As far as I know, Marchetti (1977), not David Keith, was the father of the term 'geoengineering' I thought Klaus Lackner, not David Keith, is known as the father of the artificial tree. Capturing excess air/ocean CO2 for mere pennies per ton would indeed

RE: [geo] Re: Regional inadvertent geoengineering cooling eastern US by 0.5 C

Agreed. All of us are now knowingly warming and acidifying the planet via our unmitigated use of fossil fuels. Would love to have a meaningful conversation as to what to do now about this extensive, announced and well-reviewed, but so far inadequately regulated climate and chemistry

Re: [geo] Second Haida OIF Test Set for June Cancelled

George - “The reports that I have been removed as a director of Haida Salmon Restoration Corp. are, unfortunately, inaccurate,” Unfortunate for whom? - Greg From: Josh Horton joshuahorton...@gmail.com To: geoengineering@googlegroups.com Sent: Tue, May 28, 2013

[geo] Meanwhile, in CDR news...

Our latest offering on abiotic CDR can be found here: http://www.pnas.org/content/early/2013/05/30/1222358110.full.pdf Some highlights: air CO2 captured and safely stored - check carbon-negative H2 produced - check ocean alkalinity beneficially increased, OA and impacts reduced - check $100/tonne

RE: [geo] Re: Reply to Ken Caldeira

Ditto. I appreciate the difficult task you are doing. - Greg From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of John Latham [john.latha...@manchester.ac.uk] Sent: Saturday, June 01, 2013 12:42 PM To:

Re: [geo] Re: Meanwhile, in CDR news...

Thanks, David, very nice review. Where our technology departs from the higher profile abiotic methods you discuss is: 1) expensively concentrated CO2 is not formed (or stored), 2) reactions occur at ambient T and P - exotic chemicals and conditions are avoided (so far), 3) excess ocean rather

Re: [geo] Re: Meanwhile, in CDR news...

it will completely weather away over a period of under 10 years, converting CO2 to bicarbonate in solution. All for ~$10/tCO2. Emissions for mining, transport, grinding, just a few % of the CO2 gain. So what's not to include about it? Oliver. On 02/06/2013 20:29, RAU greg wrote

RE: [geo] Re: Meanwhile, in CDR news...

winning technology. -Greg From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Oliver Tickell [oliver.tick...@kyoto2.org] Sent: Monday, June 03, 2013 9:11 AM To: RAU greg Cc: david.app...@gmail.com; geoengineering@googlegroups.com

[geo] NASA Finds ‘Amazing’ Levels Of Arctic Methane And CO2

NASA Finds ‘Amazing’ Levels Of Arctic Methane And CO2, Asks ‘Is a Sleeping Climate Giant Stirring in the Arctic?’ http://thinkprogress.org/climate/2013/06/13/2138531/nasa-finds-amazing-levels-of-arctic-methane-and-co2-asks-is-a-sleeping-climate-giant-stirring-in-the-arctic/ -- You received

RE: [geo] Experiment Currently Taking Place in the Arctic?

I'd suggest wind pumps as used on the prairie to lift groundwater. Just set them up on the windy, seasonal ice sheet, drill a hole, and pump away. They'd have floats so after summer-melt out they could be rounded up by ship, hopefully sail-powered, or they could be permanently anchored to the

[geo] The importance of feldspar for ice nucleation

See below. Thought: 1) Pro-actively inject feldspars into the atmosphere to effect water nucleation and SRM. 2) The particles eventually rain out and react with CO2 and water to convert excess CO2 to ocean alkalinity a la Schuiling and de Boar (2011) and Koelher et al (2013), e.g.:

RE: [geo] (Ocean pipes) The Science of Climate and Geo-engineering… and more David Brin Ethical Technology

I take issue with this statement: Out of all of the ideas that have been raised for either removing carbon from the atmosphere or reducing the sunlight that feeds the greenhouse, only one would attempt to emulate nature's own process for removing CO2, the way by far the largest amount has

[geo] CRD: not very relevant and a distraction

Klaus Lackner and I tried to inject some hope and optimism into the earlier climate change mitigation discussion by Matthews and Solomon: http://www.sciencemag.org/content/340/6140/1522.2.full MS reply: http://www.sciencemag.org/content/340/6140/1523.1.full They summarize: In a discussion of

RE: [geo] Re: (Ocean pipes) The Science of Climate and Geo-engineering… and more David Brin Ethical Technology

Michael, I agree that there could be some interesting synergies between accelerated weathering and biomass production. However, if you are suggesting that biomass be the ultimate C storage medium, pro-actively sinking this into the subsurface ocean means that there will be substantial organic

RE: [geo] The dangers of trying to set the Earth's thermostat - USA TODAY

How about the dangers of the alternative: Continuing to unset the Earth's thermostat (and pH-stat)? ...the temptation to seriously consider a technological fix will become irresistible to many. Let's hope so! Are we going to solve the CO2 problem in the absence of technology - new renewable

[geo] Coupled CH4 and CO2 Mitigation?

Sorry if this is old news, but in cleaning out my in box I came across this interesting 2012 paper – anaerobic methane oxidation also consumes CO2. So with a bit of biogeoengineering we can pro-actively mitigate CH4 and CO2 simultaneously, +/- take the lipid-rich biomass to produce biofuels,

Re: [geo] Coupled CH4 and CO2 Mitigation?

Yes, completely supplanting fossil fuel is indeed a pipe dream, but someday will be a necessity if we survive that long. Still, in reading the fine print in this paper the ratio of CO2 consumed to lipid produced is generally 0.6, a figure I find remarkably high. The incubations were conducted

[geo] DAC vs CRD?

Article below. The usual suspects and viewpoints, e.g. : Pulling vexing carbon emissions straight from the sky might become an important way to keep climate change in check. As pilot projects move forward, the prospect of capturing carbon dioxide from the air is growing increasingly plausible,

[geo] Still More CDR: Nutty idea?

All the other techniques we know about just prevent emission, nothing else, said lead author Klaus Becker of the University of Hohenheim in Stuttgart, Germany. Only plants are able to extract carbon dioxide from the air. Spoken like a true biologist. The problem with plants (unlike geochemical

[geo] Acidifying oceans will heat the planet: Who knew?

On the other hand acidification = less marine calcification = less CO2 flux to air from calcification. - Greg http://www.newscientist.com/article/dn24098-acidifying-oceans-will-heat-the-planet-more.html Acidifying oceans will heat the planet more 18:00 25 August 2013 by Michael Marshall For

[geo] Re: Climate Colab, Two of our proposals win in this round of competition ..

I agree with Ken in that it is unfortunate that more proposals can't be promoted/supported. There were lots of other good ideas in this competition (and not entered – SRM?) that deserve RD attention, and ultimately we may need all of them to avert global meltdown and acidification. In the

[geo] Extreme weather causes ocean acidification

A climate/OA/SRM link? Greg Tropical cyclones cause CaCO3 undersaturation of coral reef seawater in a high-CO2 worldhttp://feedproxy.google.com/~r/wordpress/lRgb/~3/G8ZcIxq3gts/?utm_source=feedburnerutm_medium=email Posted: 09 Sep 2013 12:56 AM PDT Ocean acidification is the global decline

RE: [geo] *Seeing* carbon-capture minerals using electron microscopy

To quote the image caption: Capturing and storing carbon dioxide (CO2) and other greenhouse gases deep underground is one of the most promising options for reducing the effects of energy production on the earth. Scientists at PNNL are using electron microscopes to understand the reaction of CO2

RE: [geo] Linking solar geoengineering and emissions reduction

And just to add some perspective, EIA now estimates that CO2 emission in 2040 will be 45 GT CO2/yr relative to 31 GT/yr in 2010*. So assumming a mean emissions rate during that period of 38 GT/yr and multiplying by 30 years yields a cummulative emissions of 1100 GT CO2. The Davis/Caldeira

[geo] Russian meteor created new dust layer: Heavenly SRM experiment?

http://www.foxnews.com/science/2013/08/19/russian-meteor-explosion-atmosphere/ -- 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] CO2 effects on plankton

In situ studies predict major changes to plankton community structure and C cycling/storage as CO2 increases. As an aside, interesting to ponder the politics/ethics of adding CO2 versus iron to ocean experiments at this scale. -Greg

RE: [geo] Scientific advice improved outcome of UN climate talks

From below, According to Dixon, although emissions reductions should be the priority for tackling climate change, the hypothetical engineering of the Earth's climate is another technology that needs proper consideration. Geoengineering will face even more challenges than CCS in getting through

RE: [geo] Offtopic: For instant climate change, just add one large comet

It's also interesting to note that the CO2 excursion was too big to have come from oxidation of organic matter: A best fit of the relationship between the total CIE magnitude and paleo-water depth at each site (Fig. 4Bhttp://www.pnas.org/content/110/40/15908.full#F4) predicts an atmospheric

Re: [geo] CBD Secretariat Invites Parties¹ Submissions on Geo-Engineering-Related Measures - Climate Change Policy Practice

Agree. What are the consequences/risks to biodiversity of not evaluating/considering GE in the face of rising CO2? Greg On 11/20/13 9:01 AM, Stephen Salter s.sal...@ed.ac.uk wrote: Hi All Should they also ask for a list of inactivities such as NOT doing a form geoengineering which could have

RE: [geo] Implications of Current Developments in International Liability for the Practice of Marine Geo-engineering Activities

From below - One of the key purposes of the liability regime could be to make ocean users more cautious when exploring and exploiting the oceans through charging cleaning costs or imposing compensation for damage. This paper aims to identify such a preventative effect of the international

[geo] CRS on GE

Apologies if this link has already been discussed: https://www.fas.org/sgp/crs/misc/R41371.pdf Greg -- 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] Building Climate Solutions Conference

Good news - looks like buildings, agriculture, and natural resources are going to do the heavy lifting in solving AGW. Geoengineers need not apply. Greg [Email-Banner-2]http://www.buildingclimatesolutions.org/

[geo] IPCC: CDR must be considered

This is apparently from the upcoming IPCC Mitigation volume, or something else? CDRer's mount up? Greg http://www.brisbanetimes.com.au/environment/climate-change/sucking-co2-from-atmosphere-may-be-only-way-to-meet-climate-goals-un-report-says-20140116-30vnr.html Sucking CO2 from atmosphere may be

[geo] Rock stars rising?

http://www.nature.com/news/rock-s-power-to-mop-up-carbon-revisited-1.14560 Rock’s power to mop up carbon revisited Experts push for more research into olivine weathering. Daniel Cressey 21 January 2014 Estimates suggest that olivine could be used to sequester a significant proportion of carbon

[geo] Soil bio-geo connection to air CO2 management?

I haven't read the paper, but hopefully they sorted out the bio vs abio effects of mineral weathering under high and low CO2. How might soil biochar addition change this equation? Also I wouldn't expect this effect in C4 plant communities whose CO2 uptake is decoupled from air CO2

RE: [geo] Geoengineering in a World Risk Society - By Tina Sikka.

PM To: Rau, Greg; geoengineering@googlegroups.com Subject: RE: [geo] Geoengineering in a World Risk Society - By Tina Sikka. Greg, Any biofuel production without carbon sequestration is carbon neutral, based on the assumption that the regrowth of plants offset the carbon emitted in fuel usage

RE: [geo] Shipping emissions can lead to high local ocean acidification

Thanks, Oscar. However, this problem would seem to pale in comparison to CO2 acidification with an ocean input of about 8 GT (vs the stated MTs of SOX and NOx). Also, probably dwarfed by SOx and NOx from land based generation. Speaking of seawater scrubbing, this is also commonly done at power

RE: [geo] Re: Geoengineering and Climate Change Polarization: Testing a Two-channel Model of Science Communication, Ann. Am. Acad. Pol. Soc. Sci.

This observation may bear repeating: To be effective, science communication must successfully negotiate both channels. That is, in addition to furnishing individuals with valid and pertinent information about how the world works, it must avail itself of the cues necessary to assure individuals

Re: [geo] Re: Geoengineering and Climate Change Polarization: Testing a Two-channel Model of Science Communication, Ann. Am. Acad. Pol. Soc. Sci.

is needed, not only to suck CO2 out of the atmosphere, but also to cool the Arctic. Cheers, John On Tue, Mar 4, 2014 at 4:22 AM, Rau, Greg r...@llnl.govmailto:r...@llnl.gov wrote: This observation may bear repeating: To be effective, science communication must successfully negotiate both

RE: [geo] Re: Geoengineering and Climate Change Polarization: Testing a Two-channel Model of Science Communication, Ann. Am. Acad. Pol. Soc. Sci.

;-) Greg From: John Nissen [johnnissen2...@gmail.com] Sent: Thursday, March 06, 2014 3:21 PM To: Rau, Greg Cc: dmorr...@gmail.com; geoengineering@googlegroups.com; dan.ka...@yale.edu; John Nissen Subject: Re: [geo] Re: Geoengineering and Climate Change Polarization

RE: [geo] Sea Ice

Any chance to transform that thermal energy to useful forms while you are at it? Arctic OTEC. In the winter that could be some serious Delta T. Greg From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Keith Henson

[geo] More on geo megaprojects to adapt to vs avoid AGW

We apparently can't afford to avoid AGW, but we can afford to adapt to it? Greg CLIMATE: National strategy needed for historic sites at risk from warming -- report Emily Yehle, EE reporter Published: Tuesday, May 20, 2014 By the end of this century, rising sea levels will likely leave

[geo] Nature's OIF

Move over Russ George. the team estimated that the flux of bioavailable iron into the ocean from glaciers currently is between 400,000 and 2.5 million metric tons annually from Greenland and up to 100,000 metric tons from Antarctica. Governance that. Greg RESEARCH: Glacial melt pouring iron

[geo] EGU GE post mortem

http://onlinelibrary.wiley.com/store/10.1002/2014EO23/asset/eost2014EO23.pdf?v=1t=hvip8icos=b0ec7713c061bf0df5261c8049de962020c6d8b1 Selected quotes: If it's enough of an emergency to deploy the solar geoengineering system, it's enough of an emergency to stop deploying devices--power

RE: [geo] Mitigate the sea-level rise

Relatedly, there is an interesting scheme (being tested/built in the Middle East somewhere) that I think goes like this. A natural or artificial marine bay is covered with a high arching cover such that during the day the enclosed space is solar heated and seawater evaporates. During the night

[geo] Breaking News: Emissions reduction will solve everything

The first scholarly attempt [?!] to rank a wide range of approaches to minimizing climate change in terms of their feasibility, cost-effectiveness, risk, public acceptance, governability and ethics, the study appears in the latest issue of the peer-reviewed scholarly journal Frontiers in

[geo] Maybe it is hopeless

http://www.sciencemag.org/content/344/6188/1114.full To reduce humanity's environmental footprint toward a sustainable level, it is necessary to reach consensus on footprint caps at different scales, from global to national or river-basin scale. Footprint caps need to be related to both

RE: [geo] Real Problems - False Solutions: Climate Change Geo-Engineering | Cambridge Community Television

A geo-engineering response to climate change will cause enormous problems. The real question is how enormous are those problems relative to those resulting from the ongoing lack of more conventional, effective human actions on climate change? Who is authorized to act on Earth-wide

Re: [geo] Floodgates open for adaptation GE investment

OK, thanks. Survival/adaptation it is. That simplifies things; I'm investing in seawall construction and air conditioning companies so I might be able to afford to survive/adapt. Greg On 6/10/14 2:46 PM, Keith Henson hkeithhen...@gmail.com wrote: On Tue, Jun 10, 2014 at 12:21 PM, Greg Rau

[geo] call for abstracts for AGU sessions

FYI (Marcia McNutt a CDR expert - who knew?) - Greg From: Dunlea, Edward edun...@nas.edumailto:edun...@nas.edu Date: Wednesday, July 2, 2014 8:30 AM To: Dunlea, Edward edun...@nas.edumailto:edun...@nas.edu Subject: call for abstracts for AGU sessions Dear Colleagues, We would like to call your

RE: [geo] Response to Svoboda and Irvine, J Reynolds

Toby, I regret I will not be at the meeting to learn more about the ethics of CDR. Presumably this refers to enhancement of existing, natural CDR which is already removing about 55% of our emissions, but which is immune from ethical considerations(?) Regardless of our actions, this natural CDR

RE: [geo] Re: what's new on cost estimates for DAC CDR?

What qualifies as DAC CDR? Greg From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Fred Zimmerman [geoengineerin...@gmail.com] Sent: Friday, August 29, 2014 7:02 PM To: Mark Capron Cc: charlie.zen...@gmail.com; geoengineering

RE: [geo] Arctic sea ice depletion to result in rise of CO2 in atmosphere | Zee News

A new study has revealed that Arctic Sea ice helps remove carbon dioxide from the atmosphere and its depletion would result in an increase of atmospheric concentration of the gas. [?!] How does removing CO2 from air increase air CO2 concentrations? Anyway, can believe that CaCO3 precipitates

RE: [geo] Arctic sea ice depletion to result in rise of CO2 in atmosphere | Zee News

carbon chemistry workup of the affected seawater/brine/ice to be convinced. Greg From: Soeren Rysgaard [soeren.rysga...@umanitoba.ca] Sent: Wednesday, September 24, 2014 5:44 AM To: Peter Flynn Cc: mmacc...@comcast.net; Ken Caldeira; Rau, Greg; Andrew Lockley

RE: [geo] Youtube playlist

Speaking of videos, there are quite a number over at geoengineering watch: http://www.geoengineeringwatch.org/ including: http://www.geoengineeringwatch.org/talking-with-geoengineers-sf-geoengineers/ http://www.ustream.tv/recorded/29293171

RE: [geo] Re: Dr Evil

OK let's assume that 30,000ppm CO2 would do it. So at 2.12 GT C per ppm CO2, we'd need 60,000 GT of C or 6*44/12 = 220,000 GT CO2. Recoverable fossil fuels might be 5,000 GT C or 18,000 GT CO2, so that's not going to do it. On the other hand, the ocean contains 37,000 GT C or 136,000 GT CO2,

[geo] CDR cheaper than CCS

All in all this [CCS] is pretty impressive technology for mitigating CO2 but we need to seriously question the rationale for spending so much to justify keeping coal-fired power plants in operation. That's because CCS is the most expensive approach we can take to CDR, carbon dioxide removal.

Re: [geo] Is Capturing Carbon from the Air Practical? | MIT Technology Review

If you are looking for a beneficial and high capacity use of (expensively) concentrated CO2, look no further than using it to restore carbonate saturation state in the ocean via contacting with limestone or Olaf's silicates. By my calculation you'd need to consume some 250 GT of CO2 in this

RE: [geo] Session: Climate Intervention and Geoengineering: Albedo Modification (2015 AAAS Annual Meeting (12-16 February 2015))

the CDR complement is here: https://aaas.confex.com/aaas/2015/webprogram/Session9663.html The other apparent NAS/NRC report rollout will occur at AGU: https://agu.confex.com/agu/fm14/preliminaryview.cgi/Session5204 https://agu.confex.com/agu/fm14/preliminaryview.cgi/Paper9055 Greg

[geo] Speaking of CDR for profit...

http://www.nzherald.co.nz/element-magazine/news/article.cfm?c_id=1503340objectid=11353005 Now based in Chicago, New Zealand-founded company LanzaTech has been heralded for recycling the carbon-rich waste from industrial operations, such as steel works, into ethanol and other green chemicals.

Re: [geo] Article in Toronto Star quoting Jim Fleming and me

Thanks, Ron. Just to expand on your comments on Prof. Fleming's CDR statements at http://www.thestar.com/news/insight/2014/11/09/many_experts_say_technology_cant_fix_climate_change.html All the [CDR] plans, however, would likely entail huge costs, the use of dangerous chemicals and uncertain

RE: [geo] Re: The Good, The Bad, and the Ugly of CO2 Utilization | Everything and the Carbon Sink

Sorry, I meant is biology affected? From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Greg Rau [gh...@sbcglobal.net] Sent: Friday, November 14, 2014 10:46 AM To: Schuiling, R.D. (Olaf); voglerl...@gmail.com;

RE: [geo] Re: The Good, The Bad, and the Ugly of CO2 Utilization | Everything and the Carbon Sink

thrive in acidic water, but then there will also be losers, meaning ecosystems will change, but not necessarily to our benefit or to other marine species. Greg From: markcap...@podenergy.org [markcap...@podenergy.org] Sent: Sunday, November 16, 2014 8:35 AM To: Rau, Greg; gh...@sbcglobal.net

RE: [geo] The flawed appeal of unilateral Direct Air Capture programs to prevent climate change | Deich

I share your concern, Peter. In seeking the require blessings to move forward with RDD, we can point to the global scale demonstration of CDR already occurring. As I've pointed out before (OK, like a broken record), global atmospheric CO2 concentrations temporarily decline each year, even at

Re: [geo] A closer look at the flawed studies behind policies used to promote 'low-carbon' biofuels | University of Michigan News

Relatedly: http://www.eenews.net/tv/2015/02/10 Greg From: NORTHCOTT Michael m.northc...@ed.ac.ukmailto:m.northc...@ed.ac.uk Reply-To: m.northc...@ed.ac.ukmailto:m.northc...@ed.ac.uk m.northc...@ed.ac.ukmailto:m.northc...@ed.ac.uk Date: Wednesday, February 11, 2015 2:01 AM To: greg RAU

Re: [geo] National Academies reports

Also this: http://arstechnica.com/science/2015/02/hack-the-planet-comprehensive-report-suggests-thinking-carefully-first/ To quote: In the end, the report clearly comes down in favor of research into carbon removal technology. Overall, there is much to be gained and very low risk in pursuing

[geo] Runaway CDR?

GR – Not sure I believe this. The Trichos will be limited by available P and Fe (very low in the open ocean). So sure, elevated CDR for a while and then back to BAU(?) What did Trichos do say 100m years ago when pCO2 and acidity was at BAU year 2100 levels? Or are Trichos the reason the pCO2

[geo] Paris Climate Agreement: Shaky Technological Foundations

http://www.technologyreview.com/news/544551/paris-climate-agreement-rests-on-shaky-technological-foundations/?utm_campaign=newsletters_source=newsletter-weekly-energy_medium=email_content=20151221 "Simply put, the technology for separating carbon dioxide from power-plant emissions—not to

Re: [geo] Re: Lithium-CO2 tech and CO2 extraction

OK, if metal global abundance is the issue how about Fe-CO2 fuel cells?: http://www.sciencedirect.com/science/article/pii/S0196890403003078 Competition for other Fe uses probably make this mute plus such fuel

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