Re: [geo] Negative Emissions: Arrows in the Quiver, Life Preserver,and/or Moral Hazard?

gt; till the Arctic Ice cap has gone in the summer months then our proposals, > and anyone else’s, will be ineffective. This is likely to happen within the > next 2 years, which is about the time necessary for development and > deployment. > > > > We are on the edge. > > &g

Re: [geo] Michigan Scientists See Urgency for Negative Emissions | Climate Central

l presence and activity than then. Many new >> reports of cost effectiveness - even as little as one-year payback. >> I would amend your sentence to express an ambition not to *restore* but >> to *double.* >> >> Ron >> >> >> On Aug 25, 2016, at 6:25 AM, John Nis

Re: [geo] Michigan Scientists See Urgency for Negative Emissions | Climate Central

se its efficiency by mining, milling and spreading > the olivine grains to capture CO2. Olaf Schuiling > > > > > *From:* geoengineering@googlegroups.com [mailto:geoengineering@ > googlegroups.com] *On Behalf Of *John Nissen > *Sent:* dinsdag 23 augustus 2016 0:02 > *To:

Re: [geo] Michigan Scientists See Urgency for Negative Emissions | Climate Central

Dear Benjamin, I was interested to read your paper, co-authored with Brian O'Neill and Claudia Tobaldi, about what it would take to achieve the Paris temperature targets [1]. There is clearly a limit of what can be achieved in emissions reductions, of around 50% per decade if 7% per year were

Re: [geo] News review of week 31 of 2016

CE News has this link for the Oppenheimer Lecture: http://www.ladailypost.com/content/oppenheimer-lecture-national-academy-sciences-president-examines-question-climate Climate Intervention: A Last Resort? Dr. Marcia McNutt Wednesday July 20 at 7:30 p.m. Duane W. Smith Auditorium 1300 Diamond

Re: FW: [geo] 6 key lessons to inform negative emissions technology innovation

Hi Olaf, Could you start by saving the Great Barrier Reef? Something needs to be done quickly and locally. Cheers, John On Wed, Jun 1, 2016 at 9:00 AM, Schuiling, R.D. (Olaf) wrote: > > > > > *From:* Schuiling, R.D. (Olaf) > *Sent:* woensdag 1 juni 2016 9:41 > *To:*

Re: [geo] March temperature smashes 100-year global record

warming is to be kept below 1.5 C this century. Do you agree or can you suggest an alternative course of action to avert extreme danger? Kind regards, John Nissen Chair, Arctic Methane Emergency Group (AMEG) On Sun, Apr 17, 2016 at 3:22 AM, Greg Rau <gh...@sbcglobal.net> wrote: >

Re: [geo] New post- Building Better Concepts in Climate Engineering: why bother with CDR and SRM?

Hi Michael, It is clear that the Earth System is moving out of the norm of the past 8000 years (Holocene), far more rapidly than expected, and to the great consternation of many scientists. There is something that struck me about all the interventions which may be called geoengineering: they are

Re: [geo] 2015 Year in Review: Carbon Removal

Thanks to Noah Deich for the excellent review of political progress in 2015 and CDR options [1]. However there are some important omissions: 1. There is no target CO2 level or target timescale for achieving it. James Hansen has suggested the target should be at or below 350 ppm, which was the

Re: [geo] The impact of equilibrating hemispheric albedos

So what happens when the Northern Hemisphere albedo is reduced by several per cent over thirty years [1]? Presumably there is now an imbalance between the hemispheres. If anything albedo in Antarctica is increasing as sea ice grows in extent. John [1] Mark Flanner, 2011:

Re: [geo] Negative emissions for climate change stabilization & the role of CO2 geological storage

Thanks, Andrew. Importantly, increasing the carbon in soil is mentioned in this flyer for a session at an event in Paris, July 2015. http://www.iiasa.ac.at/web/home/about/events/Flyer_NegativeEmissionsGeolStorage_10072015.pdf "Proposed portfolios of GHG mitigation activities require annual

Re: [geo] Impact assessment: Geoengineering challenges : Nature Climate Change

Hi Greg, I am a defender. But there is a lot of resistance to presenting the case for geoengineering. For example, Gavin Schmidt gave a talk on advocacy at AGU and I asked him whether he'd allow me to be an advocate for geoengineering on his blog, Real Climate. He refused. In public! I was

[geo] NYT Op-ed: Iowa adds carbon to soil - key for COP-21

Hi all, *Iowa’s Climate-Change Wisdom* http://www.nytimes.com/2015/11/21/opinion/iowas-climate-change-wisdom.html Iowa City — NEGOTIATORS en route to the United Nations conference on climate change in Paris, scheduled to begin later this month, should take a detour on rural roads here in

Re: [geo] Permanently >400 ppm?

Hi Greg, Yes, it is the balance between emissions and removal which has to be changed. Hansen says the CO2 level has to be at or below 350ppm, which is what it was thirty years ago - with 400ppm for the CO2eq level. The Earth System is extremely unlikely to return of its own accord to

Re: [geo] Tackling Climate Change: Where Can the Generic Framework Be Located

Hi all, [Quote] The UNFCCC could pursue any approach in line with the overarching principle in Article 2 of the Convention – to achieve “stabilisation of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system”.

Re: [geo] Could we slow the flow in the Drake passage to reduce the circumpolar current and winds around Anctartica? And what would the effect be?

Hi Brian, My first thought was that you must be mad to even consider such an idea. But actually there is an acute problem with warm ocean currents melting away at the terminations of Antarctic glaciers and causing accelerated ice mass loss "beyond a tipping point" for some glaciers. If we could

Re: [geo] Could we slow the flow in the Drake passage to reduce the circumpolar current and winds around Anctartica? And what would the effect be?

ssive ice deposition came prior to > eventual melting, it might give the people of the world time to evacuate > the low lying areas of the planet in an orderly fashion. And also slow the > warming transition phase quite a lot too. > > On Sat, Oct 10, 2015 at 1:09 PM, John Nissen <

[geo] COP21 and French strategy for CDR

Hi all, This French project, announced in April [1], is the most important development on CDR (carbon dioxide removal) that I have ever read, despite no mention of biochar. What prompted this brilliant idea? Could such projects be urged for all countries, to complement pledges for

Re: [geo] Tidal Pump

Hi Robert, Thanks for responding to my points. I now have a better understanding of your approach. I appreciate that to start the ball rolling you need to promote the algae with plenty of CO2, light and nutrients in a controlled environment. But then the algae must be able to continue to do

Re: [geo] Tidal Pump

Hi Robert, I'm sorry I've only just read the description [1], because I immediately jumped to the conclusion that its significance was as a *champion for the use of algae for serious CDR*, with potential to draw down more CO2 than being emitted while 'only' using one or two percent of the

Re: [geo] draft climate engineering governance bibliography

Hi Ron, Thanks for the reference to* “Climate engineering reconsidered*. Nature Climate Change, 4 (7) pp. 527-529. ISSN 1758-678X DOI: 10.1038/nclimate2278 [1]. There is a fundamental flaw in their argument against SRM in any circumstance. The section on averting disasters fails to consider

Re: [geo] World Bank report highlights necessity of (BE)CCS

Barrows Hall University of California Berkeley, CA 94720 USA jha...@berkeley.edu On May 31, 2015, at 8:39 PM, John Nissen johnnissen2...@gmail.com wrote: IPCC and the World bank ignore that we need ramp up removal technologies until we are removing more CO2 than we are putting

Re: [geo] World Bank report highlights necessity of (BE)CCS

] World Bank report highlights necessity of (BE)CCS To: John Nissen johnnissen2...@gmail.com Cc: Schuiling, R.D. (Olaf) r.d.schuil...@uu.nl, gh...@sbcglobal.net gh...@sbcglobal.net, geoengineering@googlegroups.com geoengineering@googlegroups.com, Peter R Carter petercarte...@shaw.ca, Oliver

Re: [geo] World Bank report highlights necessity of (BE)CCS

IPCC and the World bank ignore that we need ramp up removal technologies until we are removing more CO2 than we are putting into the atmosphere. This ramp up needs to start straight away, if we are to have a reasonable chance of avoiding both dangerous global warming and dangerous ocean

Re: [geo] Impacts of ocean albedo alteration on Arctic sea ice restoration and Northern Hemisphere climate - ERL

Hi Peter, As the paper points out, projections for sea ice suggest that the Arctic Ocean will be seasonably free before mid-century [1], and this will pose challenges in the Arctic; but there are potential impacts on the whole planet from the Arctic being locked into rapid warming: 1. sea level

Re: [geo] Re: Warning over aerosol climate fix - BBC News

Hi Michael, I would like to defend Ken on this matter. SRM-type geoengineering is the only kind of intervention which could cool the planet straightaway. We are already cooling the planet with our SO2 emissions associated with coal-fired power stations, but not sufficiently to offset global

Re: [geo] Climate emergencies do not justify engineering the climate : Nature Climate Change : Nature Publishing Group

Hi Greg, Yes. We are expected to sit back and let Mother Nature take her course, even though she may take us out. Yet what Lenton and co are saying contradicts the IPCC, which says we have to go into negative emissions. So Lenton et al are even more extreme against geoengineering than IPCC!!

Re: [geo] Institutions need to radically change for the Anthropocene epoch | British Politics and Policy at LSE

Hi Andrew, Thanks for that. It shows a revolution in our thinking about the past. Quote: *The Holocene epoch of the last 10,000 years or so is defined by highly unusual stability in the Earth system. In particular, the climate shows little variability compared to the preceding late

Re: [geo] Watch Integrated Assessment of Geoengineering Proposals… on YouTube

@googlegroups.com] *On Behalf Of *John Nissen *Sent:* January-02-15 8:50 AM *To:* bobbywood2...@gmail.com *Cc:* Alan Gadian; Stephen Salter; geoengineering *Subject:* Re: [geo] Watch Integrated Assessment of Geoengineering Proposals… on YouTube Dear Rob, This is an extremely relevant discussion

Re: [geo] Watch Integrated Assessment of Geoengineering Proposals… on YouTube

:* January-03-15 3:42 AM *To:* John Nissen; geoengineering *Subject:* Re: [geo] Watch Integrated Assessment of Geoengineering Proposals… on YouTube It's not so simple 1 the Arctic is basically a small continent, so scales are enormous 2 adding straw, etc is a great idea, but logistics

Re: [geo] Watch Integrated Assessment of Geoengineering Proposals… on YouTube

Dear Rob, This is an extremely relevant discussion for any attempt to cool the Arctic in order to halt sea ice retreat. (There is strong evidence that the retreat is already having an effect on N Hemisphere climate due to jet stream disruption, so a strong argument to try cooling the Arctic

Re: [AMEG 8562] Re: [geo] Re: 2. What are some potentially false 'memes' related to solar geoengineering?

, 2014 at 2:46 PM, John Nissen johnnissen2...@gmail.com mailto:johnnissen2...@gmail.com wrote: Thanks for your response, Nathan, with your concern that SRM techniques are unready and unproven. I didn't say anything about which techniques might be used for cooling the Arctic, or how

Re: [geo] Re: 2. What are some potentially false 'memes' related to solar geoengineering?

Hi Ken, I hope I am not too late to bring this up. There are two fundamental memes about geoengineering which worry me because the leading scientific evidence suggests they are false: 1. That you can reduce CO2 to a safe level in the atmosphere (as regards its global warming and ocean

Re: [geo] Re: Enough of govern-nonsense

Lou Grinzo has hit the nail on the head: There's a world of difference between merely saying that humanity is having an effect on the global climate and recognizing that the cumulative effect has become so great and is such a threat that we have no choice but to try to actively control the

Re: [geo] Failure to deal with ethics will make climate engineering 'unviable'

Greg writes: Failing to quickly and fully understand our options from technical, economic, and environmental perspectives would seem to put at risk our chances of success under any measure of ethics. I suspect that the situation is really quite simple. Without a *combination* of CDR type

Re: [geo] Haida Nation Salmon Restoration project - Webinar on June 19th - 11 am PDT

Hi Bhaskar, Thanks for this. I am too late for the seminar, but I consider this work to be of the utmost importance. If climate continues to deteriorate, as many now expect (especially those who suspect that Arctic warming has become the main driver of climate change), we are going to have to

Re: [geo] EGU GE post mortem

Hi Ken and Greg, Reflecting on your point, Greg, it is extraordinary the widespread antagonism to geoengineering, when it is so obviously needed to reduce CO2 in the atmosphere and to prevent Arctic meltdown. We all ought to be campaigning for a grasping of the nettle of reality. We cannot rely

Re: [geo] Friends of the earth March 2014 advance briefing on AR5 Working Group 3 report

Hi David, I said that the level of CO2 had to be reduced if the world was to have a chance of keeping below 2ºC warming. Perhaps the simplest way to show this is to use the climate sensitivity calculations of Prof Hansen [1] and then look at the current level of CO2 equivalent from Prof

Re: [geo] Friends of the earth March 2014 advance briefing on AR5 Working Group 3 report

Hi all, FoE says the WG2 report on climate impacts will be published on March 29th and the WG3 report on pathways to avoid dangerous climate change will be published on April 11th. To quote from the WG3 summary by FoE: *It is still possible to reduce global carbon pollution fast enough and

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

they didn't teach us in Earth Science grad school. That's why we need the professionals in human behavior on our side - Madison Ave, Mark Zuckerberg, etc ;-) Greg -- *From:* John Nissen [johnnissen2...@gmail.com] *Sent:* Thursday, March 06, 2014 3:21 PM *To:* Rau

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

Hi Greg, The theory is that people tend to be polarised into two camps. One camp is against the idea that climate change can have anything to do with our greenhouse gas emissions; and therefore (subconsciously) this camp is against geoengineering because it would admit of a massive problem to be

Re: [geo] David Keith and Clive Hamilton debate

Hi Brian, The debate between David Keith and Clive Hamilton seems sterile. Plan A, the agreed-upon best scenario, simply won't work to prevent at least 4 degrees warming. Arguably the carbon budget, touted in AR5, has been spent or very nearly spent already. See this short video from David

Re: [geo] David Keith and Clive Hamilton debate

about what needs to be done to truly reverse climate change? Brian On Sunday, January 19, 2014 7:56:42 AM UTC-5, John Nissen wrote: Hi Brian, The debate between David Keith and Clive Hamilton seems sterile. Plan A, the agreed-upon best scenario, simply won't work to prevent

Re: [geo] House want facts on climate

Hi Greg, This committee, if it really wants reality and a correctly balanced view of the evidence, should call for testimony from Jennifer Francis, on the link between Arctic warming, jet stream behaviour and the increase in weather extremes, which have been evident over the past few years. She

Re: [geo] House want facts on climate

ice and suppress methane, including 10-minute presentations of several geoengineering • 1.20 Summing up Contact: John Nissen, Chair AMEG (Arctic Methane Emergency Group), Mobile: +44 7890657498, email: johnnissen2...@gmail.com, skype: john.nissen4 On Tue, Dec 10, 2013 at 4:48 PM, Charles H

Re: [geo] Climate science: can geoengineering save the world?

Hi all, Did anybody go to this debate on the question: “Can geoengineering save the world?” I would put the question the other way round: “Can the world be saved without geoengineering?” I suspect there is an enormous gap between the commonly held view of a slowly changing world, where we

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

Hi Greg, You are right that CBD should consider the consequences of *not*geoengineering. CDR techniques to reduce the CO2 level in the atmosphere are now mandatory, because there is already an intolerable amount of CO2 in the atmosphere - both for ocean acidification and global warming reasons.

[geo] Re: [AMEG 6606] Ice age cycles

Hi Stephen, Thanks for this paper with an interesting theory about the 100,000 year cycles. Generally speaking the warming in periods of de-glaciation is more rapid than the cooling during glaciation, so you get a saw-tooth curve, both for the 100,000 year cycle and sub-cycles within it. I

Re: [geo] My big-quick-secure CO2 cleanup proposal is still alive at the MIT geoengineering competition

Hi Mark, Your comments about the production of methane are very interesting. The group which I chair, the Arctic Methane Emergency Group (AMEG), is concerned about all things methanical, including waste water treatment, of which you have expertise. If William's proposal is to sink carbon (and I

[geo] Re: Another view on the Arctic

Hi Ron, It makes you sick, that turn of phrase fait accomplit. No doubt there are myopic people who have thought it highly desirable for the Arctic to heat quickly, and would therefore want to suppress any science that suggested that the Arctic warming had dangerous repercussions. Now that

Re: [geo] New climate article, peripherally related to CDR

Hi Fred, Yes, we must compare and contrast methods, but also combinations of methods. And we have to consider not only carbon capture but carbon sequestration (how long is carbon held?), methane suppression, avoided emissions, ocean acidification, albedo enhancement and food production. On land

Re: [geo] Re: China could move first to geoengineer the climate

Hi Lou, You say it boils down to timing and who's suffering. The assumption from people like Clive Hamilton, who are anti-geoengineering, is that the crisis is some time in the future. But he does not consider the situation in the Arctic where the sea ice is in a death spiral, with

Re: [geo] Proposal for NASA to Lead CDR Effort

Hi Ken, I was present at the launch of the NOAA updated report on the state of the Arctic at AGU in December*. NOAA has singularly failed in its mission: To understand and predict changes in climate, weather, oceans, and coasts, To share that knowledge and information with others, and To

Re: [geo] 1. Prospects for an Emergency Drawdown of CO2

Hi all, I also think that Professor Calvin's analysis is superb, and we have to find a way to draw down 30 Gt of carbon per year. We might allow ten years to ramp up to this level - with a view to achieving carbon neutrality by the end of that period. During the following years we should

Re: [geo] Ocean based algal growth: rate of CO2 transfer

Hi Michael et al, I've been told that a diatom bloom would be harmless as well as drawing down CO2 and increasing albedo - so how would one trigger a massive bloom? Could one use Salter's wave-powered pumps? Doesn't sea water now contain a high level of CO2, which is why we are concerned about

Re: [geo] Coupled Model Intercomparison Project 5 (CMIP5) simulations of climate following volcanic eruptions

Hi Mike, Could there be a method of selective filtering of coal-fired power stations, such that the cooling aerosol (or SO2 precursor) is allowed into the troposphere while the black carbon is removed? Cheers, John --- On Tue, Sep 11, 2012 at 7:15 PM, Mike MacCracken

Re: [geo] WWF Now Supports Geoengineering Research

Hi Emily, It's astonishing that WWF is so badly informed that they haven't even considered the necessity of SRM-type geoengineering to cool the Arctic. The dramatic retreat of sea ice, the most conspicuous effect of CO2 emissions and global warming, isn't even mentioned in the article! What

Re: [geo] Meanwhile, Arctic dullwater

Hi all, Thanks Greg. It is astonishing that the Met Office is still sticking to outdated models, though they have been gradually bringing forward their predictions of sea ice demise down since the IPCC prediction of 'beyond 2100' in AR4. Peter Wadhams has been predicting that sea ice volume

Re: [geo] Brightening and hurricanes

Hi all, What about marine cloud brightening to try and save the Arctic sea ice, which is starting to collapse in extent right at this moment? The repercussions of sea ice disappearance are well known and include the threat of a methane excursion and Greenland Ice Sheet destabilisation [1]. More

Re: [geo] Re: Testing brightwater

Hi all, I would be very keen to explore methods of cooling rivers, with a view to urgent deployment on rivers flowing into the Arctic. The size and lifetime of bubbles is crucial for maintaining reflective properties. But lifetime is most puzzling from the physics [1]. Thus experimentation is

Re: [geo] 400 ppm and rising

Hi Albert, You make an interesting point about the storm surges mixing the water. This will take warmer surface water down to the seabed - adding to other mixing phenomena that Shakhova and Semiletov have been observing. They believe it is this warming that is causing rapid release of methane,

Re: [geo] Role for DAC? (Calgary meeting thread relabeled)

Hi David, I would like people to consider a worst-case requirement to avoid catastrophic ocean acidfication, and work out what could be done to prevent such a catastrophe. Suppose (i) we are already close to the limit on the rate of acidification and (ii) the actual level of acidification has to

Re: [geo] Re: tropospheric aerosol use

Hi Nathan, Thanks for that thoughtful posting. I am sorry you have the impression that AMEG might be proposing cloud brightening as a silver bullet. We obviously have a strong advocate of that particular method in Stephen Salter, who is a member of the group. But Stephen recognises that we

Re: [geo] Re: We are top story on BBC environmental news

Hi Josh, Before commenting on your question, I need to explain the recent activities of AMEG, a group whose position Professor Salter supports. Professor Peter Wadhams and I gave evidence, on behalf of AMEG, to the first of two hearings of the Environment Audit Committee (AEC) inquiry Protecting

Re: [geo] Re: We are top story on BBC environmental news

15:29, John Latham wrote: Hello John Nissen and All, John N says:- Just before the hearing, the committee had received an email [6] from some geoengineering experts recommending research but suggesting that development and deployment of geoengineering techniques was premature, thus

[geo] Inquiry Protecting the Arctic and geoengineering now

of Exeter - Professor Peter Wadhams, University of Cambridge - John Nissen, Chair, Arctic Methane Emergency Working Group. *FURTHER INFORMATION:* *Committee Membership is as follows:* *Chair: Joan Walley, MP* Peter Aldous MP Zac Goldsmith MP Caroline Nokes MP Richard Benyon MP* Mark

Re: [geo] GHG's: Cost- Effective Temperature Potentials

Hi Michael, I just picked up this email, and am interested in GWP from the PSCs (polar stratospheric clouds). Four questions: 1. What is the mean radiative forcing effect and mean lifetime of a cloud to produce a GWP of 310? What is the total radiative forcing of such clouds and the total

[geo] Climate Forcing Particles

Could this be an alternative to sulphate aerosols? John --- On 29/01/2012 06:14, Erich Knight wrote: Hi Policy Production, * Climate Forcing Particles,...* The fate and climate forcings' of sulphate and nitrate aerosols continues to evolve. now Criegee biradicals? Maybe , stealing a

Re: [geo] Effectiveness of SRM as a function of climate sensitivity

Hi Greg, Does this tell us anything about SRM geoengineering to cool the Arctic, with the current CO2 level? Suppose it was necessary next year - spring 2013 - to reduce risk a collapse in sea ice extent! Are there any dangers with injecting SO2 into the stratosphere, or with cloud brightening,

Re: FW: [geo] FW: Goldschmidt Session 12h. Frontiers in methane biogeochemistry

Hi Greg, Here's another subtheme from the Goldschmidt 2012 Conference of interest to those of us who are worried by the rise in atmospheric methane levels: 14a. Environmental impacts of shale gas production and methane emissions Co-convenors: Bob Howarth (Cornell University) - howarth[image:

Re: [geo] Further thoughts on Arctic methane

is by geoengineering, isn't it? If you agree, then I'd welcome you to join the Arctic Methane Emergency Group which is calling for rapid action. Best wishes for the New Year, John Nissen Chair: Arctic Methane Emergency Group www.arctic-methane-emergency-group.org --- On Fri, Dec 30, 2011 at 9:31 PM, Rau

Re: [geo] More scientists weigh in on Arctic methane and climate risk.

of 2013 which drives the conclusion of the Arctic Methane Emergency Group that we have a planetary emergency and to call for large-scale deployment of geoengineering techniques (preferably several in conjunction) by spring 2013. Kind regards, John Nissen Chair: Arctic Methane Emergency Group [1

Re: [geo] More from PNAS

Thanks for that, Ken [quote] After the collapse of international climate policy in Copenhagen in December 2009, the tale of geoengineering, promising endof- the-chimney fixes for anthropogenic global warming, has become increasingly popular (1). This is essentially a tale of two fairies (2): the

Re: [geo] Another Stern warning

extent in summer 2013 (estimated 5% chance) [3] [4]. Cheers, John [1] http://www.carbontracker.org/wp-content/uploads/downloads/2011/07/Unburnable-Carbon-Full-rev2.pdf [2] http://www.independent.co.uk/opinion/commentators/john-nissen-it-may-already-be-too-late-to-deal-with-this-terrifying-leak

Re: [geo] Re: UK Independent: Russian team shocked at scale of methane plumes

://www.independent.co.uk/opinion/commentators/john-nissen-it-may-already-be-too-late-to-deal-with-this-terrifying-leak-6276133.html [3] http://www.newscientist.com/article/dn21275-call-for-arctic-geoengineering-as-soon-as-possible.html --- On Sat, Dec 17, 2011 at 12:54 AM, Michael Hayes voglerl

[geo] IPCC models underestimate sea ice decline

Hi all, Peter Carter kindly sent me the URL for a JGR paper [1], while at the Arctic methane workshop (Chiswick, 15-16th October) our sea ice expert, Peter Wadhams, was supporting the PIOMAS model of sea ice volume [2], with trend lines added here [3]. It is astonishing that the JGR paper

[geo] Re: AMAZING NEWS.

. This is VERY important. Download and save the graph. Best regards Graham Ennis - Original Message - From: P. Wadhams p...@cam.ac.uk To: Omega Institute i...@omega-institute.org Cc: John Shepherd john_g_sheph...@mac.com; John Nissen j...@cloudworld.co.uk; PR CARTER petercarte...@shaw.ca

Re: [geo] Fwd: Re: Arctic Methane as the Region Warms Up

Hi Andrew and Renaud, SUGAR looks extremely dangerous to me. The animation here near the top of this page [1] gives an idea what they plan to do, by pumping in CO2 down some pipes and expecting all the methane to obediently return up the same pipes, with no thought for the masses of methane that

Re: [geo] Arctic methane workshop: dissolving, digesting or destroying methane

the methane will be collected and used if it is captured. There was a large article in teh New Scientist a couple of years ago on the mining of methane hydrates. john gorman - Original Message - From: John Nissen j...@cloudworld.co.uk To: Geoengineering Geoengineering@googlegroups

Re: [geo] Re: Arctic methane workshop: 15-16 October - Methane vents

[mailto:geoengineering@googlegroups.com] *On Behalf Of *Stephen Salter *Sent:* Thursday, October 06, 2011 7:43 AM *To:* Veli Albert Kallio *Cc:* John Nissen; g.k.westbr...@bham.ac.uk; euan.nis...@gmail.com; jens.grein...@nioz.nl; Peter Wadhams; Michel Halbwachs; harleyrichar...@googlemail.com

[geo] Re: Arctic methane workshop: Rapid cooling for the Arctic

. - Original Message - *From:* John Nissen mailto:j...@cloudworld.co.uk *To:* PR CARTER mailto:petercarte...@shaw.ca *Cc:* P. Wadhams mailto:p...@cam.ac.uk ; Mark Serreze mailto:serr...@kryos.colorado.edu ; Graham Innes mailto:i...@omega-institute.org ; Matt Watson

[geo] Arctic methane workshop - CARVE, HIPPO and GISS data

: Hi Charles, I attached a draft agenda for the meeting I mentioned about last time. The organizer is John Nissen (j...@cloudworld.co.uk). I will participate via Skype on Saturday, 15 October. I think that it would be interesting for attendees to be informed about CARVE. I recommend you contacting

[geo] Arctic methane workshop: 15-16 October - Methane vents

: +44 20 8742 3170 Skype: john.nissen4 P.S. I want as much brainstorming done before the meeting as possible, especially to involve people who might not be able to attend in person. [1] http://eprints.soton.ac.uk/64607/1/2009gl039191%2Baux.pdf --- On 03/10/2011 18:03, John Nissen wrote: Dear

Re: [geo] New report(s) on carbon dioxide removal

Hi Duncan, Thank you for your tremendous effort to describe all the available CDR/NET technologies together, in a comprehensive way such to allow a comparison. I've been discussing biochar and rock crushing with Ron Larson and Oliver Tickell; we concluded that there was scope for a combined

[geo] Cooling the Arctic by removing clouds

Dear David, I believe you were considering a form of geoengineering that doesn't come under solar radiation management (SRM), but rather thermal radiation management (TRM), i.e. by removing cloud cover and increasing thermal radiation into space from the surface of land and sea. We need as

[geo] Arctic warming - what's being overlooked?

Dear Peter, As I continue to try to work out what forces we are up against, in readiness for the London October 15-16 Arctic methane workshop, I am struck by how much less we understand about what is going on in the Arctic than we understand about the rather straight-forward

Re: [geo] GAO Study

Hi Wil, There's no mention of methane or cooling the Arctic. Why are these so rarely mentioned in such reports, when arguably the most urgent application for geoengineering is to cool the Arctic and try to prevent a methane excursion? However this document is a fair representation of the state

[geo] Preventing Arctic methane release

Hi all, The Siberian Shelf is the largest continental shelf in the world [1], and includes the Kara Sea and the East Siberian Arctic Shelf (ESAS). Shakhova et al [2] reckon that 50 Gt of methane could be released at any time from the ESAS. They believe that the methane is held back by

[geo] Geoengineering is why global warming is good for US. Really?

This is from http://www.philly.com/philly/opinion/inquirer/128541563.html. See page 2 of 3 for the geoengineering bit. Who needs enemies when you've got friends (of geoengineering) like this? Cheers, John [quote] Climate change offers us an opportunity August 28, 2011 Jim Geraghty

Re: [geo] Re: Jamais Cascio-- on the problematic idea of 350

settled? Will the final authority be the IPCC? Ron -- *From: *John Nissen j...@cloudworld.co.uk *To: *marty hoffert marty.hoff...@nyu.edu *Cc: *euggor...@comcast.net, geoengineering@googlegroups.com, kcalde...@globalecology.stanford.edu, anr

Re: [geo] Jamais Cascio-- on the problematic idea of 350

increasing the temperature. So there is a temperature inertia or lag due to ocean heat capacity but an even bigger one due to ice cap latent heat of melting. john gorman - Original Message - From: John Nissen j...@cloudworld.co.uk To: dan.wha...@gmail.com Cc: geoengineering geoengineering

[geo] Re: ARCTIC OCEAN MELTS NOW 20% EACH 10 DAYS, NORTH EAST PASSAGE OPENS FOR SHIPPING

Hi all, Albert says: Geoengineers have very little time to act as the melting in the Arctic continues to escalate beyond all of the conventional projections. I believe geoengineering is both urgent and vital. The sea ice may or may not reach a new record minimum this September, but look at the

[geo] Arctic methane workshop - report for AGU 2011 poster session

and Methane 4. Arctic Gas Hydrate Methane Release and Climate Change *AUTHORS (FIRST NAME, LAST NAME): * John Nissen^1 *INSTITUTIONS (ALL): * 1. Cloudworld Ltd, London, United Kingdom. *ABSTRACT BODY: * This is a report from a workshop especially convened in order to identify means to reduce the threat

[geo] Re: Heinrich event PNAS paper

, sufficient to restore the Arctic sea ice to its previous extent and prevent a methane excursion! On the other hand the discharge might happen too late - in which case we get abrupt global warming from methane as well as abrupt sea level rise! Kind regards, John (Nissen) Chiswick, London W4 [1

Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise

of Global Ecology 260 Panama Street, Stanford, CA 94305 USA +1 650 704 7212 kcalde...@carnegie.stanford.edu http://dge.stanford.edu/labs/caldeiralab @kencaldeira On Sat, Jul 23, 2011 at 12:08 AM, John Nissen johnnissen2...@gmail.comwrote: Hi Ken, You take a fundamentally different view

Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise

reference [1] http://unfccc.int/essential_background/convention/background/items/1355.php On Sat, Jul 23, 2011 at 11:43 PM, John Nissen johnnissen2...@gmail.comwrote: Ken, We all like to be optimistic - it is a human characteristic. But if you accept what is happening to the Earth System

Re: FW: [geo] Climate Change, Security, and Small Island States

, it is a bit encouraging. On the other, I am not sure all the assumptions made here are correct (e.g., on past natural warming)—and I am intending to look at if more closely. Best, Mike -- Forwarded Message *From: *John Nissen johnnissen2...@gmail.com *Reply-To: *johnnissen2...@gmail.com

Re: [geo] Climate Change, Security, and Small Island States

interested in climate engineering research as a potential ally, but rather as an obstacle to progress. Josh On Fri, Jul 22, 2011 at 5:35 PM, John Nissen johnnissen2...@gmail.comwrote: Hi Josh, I absolutely agree. Climate engineering must be introduced as part of a strategy to save

Re: [geo] Re: September sea-ice gone by end of century? (or much sooner)

://psc.apl.washington.edu/wordpress/research/projects/arctic-sea-ice-volume-anomaly/ [2] http://www.mail-archive.com/geoengineering@googlegroups.com/msg00660.html [geo] Re: Geoengineering - cloud effects John Nissen Wed, 10 Dec 2008 13:42:10 -0800 --- On Wed, Jul 20, 2011 at 5:50 PM, David Appell david.app

Re: [geo] Jim Hansen : 1 to 2DegC and 20m sea level rise

Dear Ken, I've already looked at this interesting paper [1], from Jim Hansen and Mikiko Sato - but I'd not read before of his conjecture about rate of ice mass loss doubling per decade, producing many metres of sea level rise this century. But the implication is that the situation can be saved

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