Dear Michael , I am not saying that because DAC plus storage is the best option to address the threat of catastrophic climate chnage we have(which it is ) that we should only work on it . I am for doing work on SRM!!!!
I want you and others dedicated to addressing the threat we face to support the following: 1 Doing PUBLICALLY funded DAC demonstration pilot plants with the purpose of addressing the cost issue and a subseqeunt implementation plan.- 2 At the same time support SRM related efforts that the experts thought would be most helpful for evaluating its potential and risks of full scale implementation. 3 Then we can make a decision together of best plan for moving forward. How much DAC efforts will attract in the future should be determined by the results as well as whether we should do SRM.. I just want you to understand that a real advantage of short term DAC ( driving the costs down by learning by doing ) is there are enough applications where it will straight up, no subsidy no tax break, be profitable. That size of these profitable markets at $50 per tonne will keep us going for decades. Harvesting our carbon from the sky implemented globally will stimulate economic development and provide more resources for fighting climate change . There are a series of positive feedbacks that like solar recently can come together to result in rapid change. But all that is besides the point at this time -we must walk before we run . I just want the CDR community to support at a very high priority the need for the DAC cost and scaleup evaluation. I hope you agree that without the evaluations described above any arguments that SRM should be done because DAC will take too long are self fulfilling and self serving, not based upon a scientific assessment. . All I have asked is that we confront the cost issue of DAC and that experts like yourself support the importance of DAC if low cost . My frustration is, as Ellen Stechl has shown, anyone interested in determining the potential cost of DAC can show it can be low cost and that the APS report was highly flawed . I have stated many times in these pages that I respect your efforts and analysis greatly. In that spirit of respect I ask you why what I suggest above should not be an action plan that we both can support and encourage others to do the same. With best regards, Peter On Sun, Dec 3, 2017 at 1:07 PM, Michael MacCracken <[email protected]> wrote: > Dear Peter--The IPCC FOD (first order draft) of the 1.5 C special report > is what is really concerning me. > > First, they label their emissions pathways by the end point temperature > that they are aiming for a century or so in the future; thus a 1.5 C > pathway is aiming at 1.5 C, but there is wide recognition and apparent > acceptance that the temperature path will overshoot not just 1.5 or 2 C, > but could well go a good bit over 3 C before the forcings are brought back > down enough (via negative emissions, etc.) to get back to 1.5 C. Well, > right now, simulations by Climate Interactive etc. have the world exceeding > 2 C by 2050 and headed up a good bit further. So, we'll be having all this > talk about being on 1.5 pathways when in reality the impacts will be > primarily determined by the peak temperature, say 3 or 3.5 C, and some, > like biodiversity loss and acceleration of ice sheet loss (and perhaps > ocean acidification effects) are not really going to be reversible. Well, I > just don't see emissions as likely to be cut fast enough or DAC as being > phased up fast enough to prevent this, and I think the temperature/climate > induced impacts are only likely to be able to be avoided with SRM, so it is > needed in the near-term, and until emissions cuts and DAC can take over. > > My second problem with the IPCC FOD 1.5 report is that it basically > accepts (based on no scientific evidence--only that negotiators chose that > value as an aspirational goal) as the agreed upon long-term equilibrium > temperature for society. In my view (not to mention the views of others), > that is just too high a value. As Hansen et al. have argued, some long-term > impacts like accelerating glacial ice loss and intensifying climate > extremes, for example, started once we passed 0.5 C, so what we really need > to do is get to below this value for the long-term (and some argue 0.5 C > would be too high if one wants to really freeze stop the glacial loss (if > that is possible). Well, while SRM could get us that cool, we really have > to be working to phase out SRM, and so DAC is critical and is, as you > suggest, the way to really not be creating other impacts in the long-term. > But, it is going to take time to get there, and during this time, SRM has > the potential to, with I think what might well be pretty modest negative > impacts, to be holding down the climate change impacts until DAC is > adequately phased up. > > What I think about your response that might rub those of us responding to > you is the implication that DAC can do everything needed--well, with really > tremendous cost, it could (starting now, to keep the temperature from not > going up further, it would need to be removing enough CO2 to keep the > atmospheric concentration from rising, so something like 40 GtCO2/yr--plus > more to account for increases in methane, etc.--and while this could > perhaps, on a technological basis, be done, this just seems to be a lot > less likely and much more expensive than starting with SRM while emissions > are phased down and DAC is phased up. > > It basically seems to me that the trends and impacts today make clear that > the actual global temperature increase needs to be kept to less than 1.5 C > and that early on there needs to be action aimed at moving the peak global > average temperature increase back to below 0.5 C over the next few decades, > doing all we can by emissions reductions of CO2 and especially short-lived > species, strong efficiency efforts, moving aggressively to renewables, as > much CDR as possible, and then the rest by SRM. So, we need every arrow in > our quiver, and not implementing all throughout coming decades will result > in significant negative consequences. Having you advocate this as well > would seem to me the way to best unify our perspectives. > > Best, Mike > On 12/3/17 3:06 PM, Peter Eisenberger wrote: > > Dear Mike , > Something stange is going on here that perhaps you can help me understand > . I repeatedly state that I am for doing research on other things and SRM > explicitly . Yet somehow in asserting what i believe is a higher priority > for our common objective I am accused of argunig against supporting other > things. Maybe I have been out of a zero sum funding world but in any case I > reject such logic as a basis for shaping our scientific positions. I think > a let a 100 flowers bloom or everything goes approach shirks our > responsibility as scientists where we should discipline ourselves to use > our knowledge to prioritize things . I assert again I cannot support nor do > I think it is justified to support SRM before one supports DAC . One is a > backup and the other is a shot a a solution -the only sustainable > solution(eg with renewable energy etc I know at this time > The logic that a large investment in DAC will rob funds for other purposes > is just wrong. As the paper I sent you shows certainly alot of DAC ( I > argue all ) can use the CO2 to make money (not a cost a benefit) and store > it at the same time. So as I have written I am convinced that in this > century we will be harvesting our carbon from the sky (where it is excess) > rather than mining it from the ground. $50 per tonne CO2 in terms of carbon > content is about $40 per barrel. Yes I do assert that DAC that is used to > provide our liquid fuels, hydrocarbions and our building materials will not > be a burden on society but an asset. By the way if one is concerned about > wasting capital than join me in appposing electric vehicles and instead > suport renewable gasoline made for CO2 from the air and hydrogen from water > powereed by the sun. That will save trillions in new infrastructure that > could indeed be better spent on education or health or other infrastructure > . > > Peter > > On Sun, Dec 3, 2017 at 11:39 AM, Michael MacCracken <[email protected]> > wrote: > >> Dear Peter--I don't really think you can say that your approach is >> without the risk of adverse impacts in that it will take much longer to >> pull down the temperature than will DAC. Yes, DAC gets you to the lower >> temperature over time, but in the interim a lot is going on. Now, yes, if a >> very great more were invested to implement DAC, one could have a >> nearer-term impact, but then one is taking money from society for other >> purposes, etc. It seems to me, the metric to be used for comparison might >> be the net reduction in impacts (I do agree SRM would not uniquely lead to >> less impacts everywhere and of every type) per unit of money of some amount >> invested. >> >> This is not in any way to be saying we should not be investing in DAC but >> I don't think your argument makes the case for not also doing research on >> SRM of various types (and SRM is getting very little research money as >> well). Given the seriousness and imminence of the predicament that we are >> in, in my opinion, a broad-based and aggressive research effort is needed >> that recognizes the advantages and shortcomings of each type of approach >> and ultimately aims for a program that draws on multiple approaches to deal >> with the rapidly worsening situation. >> >> Best, Mike MacCracken >> >> >> On 12/3/17 2:24 PM, Peter Eisenberger wrote: >> >> Dear Doug , >> >> I am sorry for the misunderstanding : I am clearly for doing efforts on >> other approaches including SRM >> >> But the situation as it stands is that the only solution conceptually >> that can address the threat of climate change without the risk of adverse >> impacts is DAC with permanent storage. Yet it is the only approach to this >> date that has effectively zero public funding support and until very >> recently policy support. So my argument is that we all should support >> public funding of DAC efforts that can be published and shared that will >> test the premise that it can be done at low cost at a gigatonne scale. What >> I have further shared is that our commercial efforts involving experts in >> industrail gas technology ( eg separating gases from air) have determined >> that $50 per tonne DAC is achievable and that we are having great >> commercial success -so much so that I have committed us not to seek public >> funding if it were approved. >> >> So the only reason I am writing about this is because I do not think we >> should delay investing in DAC till as you say >> >> Once we have demonstrated DAC with permanent storage at Gt scale and >> proven it to be low cost with no side effects, >> >> When I read that I think that every year we delay starting a serious >> effort on DAC is a year longer of risking catastrophic climate change -the >> overshoot will be more and the time will be greater. So I literally believe >> that I need to surpress my interests in the company where others delaying >> is better(less competition) and instead as a scientist try to get people to >> understand that DAC will be low cost -all we have to do is do it . >> Furthermore I argue that our patents that are public enable an indpendent >> person like Ellen Stechl to understand why DAC can be low cost and why >> others are mistaken in asserting otherwse . >> Peter >> >> On Sun, Dec 3, 2017 at 4:30 AM, Douglas MacMartin < >> [email protected]> wrote: >> >>> Peter, >>> >>> >>> >>> Once we have demonstrated DAC with permanent storage at Gt scale and >>> proven it to be low cost with no side effects, then I would agree that we >>> can stop researching other options. Until then I think it is premature to >>> declare that we have found the solution and can ignore every other option. >>> I know you disagree with me, but I do not think that we know what the costs >>> of a technology are going to be when we haven’t implemented it at even a >>> tiny fraction of a meaningful scale. I’m not convinced that it will be as >>> cheap as you believe it to be, but furthermore, it is not possible for you >>> to convince me without demonstrating both removal and storage at Gt scale; >>> sorry, but I’ve been an engineer all my life and have seen my share of >>> overconfident predictions (and probably safe to say zero accurate >>> predictions at this stage of technology development), and I simply don’t >>> believe that it is theoretically possible to accurately predict costs and >>> issues to sufficient accuracy without actually doing something. >>> >>> >>> >>> Therefore I don’t understand why you insist on picking the right >>> solution today and stopping all research on all other solutions. I don’t >>> view this as a competition. >>> >>> >>> >>> At any rate, if you have any concern about nonlinearities and tipping >>> points, you should strongly support research into SRM, as that’s a pretty >>> strong argument in favour of it. We don’t know what would happen if we >>> allowed the planet to keep warming, but we’re a lot less likely to pass >>> major earth system tipping points if we keep the system “closer” to the >>> current state. That is, of course it is almost trivially true that a world >>> that is say 1.5C (just to use the Paris number, not endorsing it) due only >>> to CO2 is less risky than a world that would have been 3C due to CO2 but is >>> brought back to 1.5C with SRM. But that second scenario is quite likely to >>> be less risky than allowing a 3C world. Although we don’t actually know >>> that today, not without further research. So I’m not sure why you’re so >>> vehemently opposed to any further research into SRM… which is how I >>> interpret your comments. >>> >>> >>> >>> doug >>> >>> >>> >>> *From:* [email protected] [mailto:geoengineering@googleg >>> roups.com] *On Behalf Of *Peter Eisenberger >>> *Sent:* Sunday, December 03, 2017 4:48 AM >>> *To:* Michael Hayes <[email protected]> >>> *Cc:* geoengineering <[email protected]>; David Keith < >>> [email protected]> >>> *Subject:* Re: [geo] Scientists Look to Bali Volcano for Clues to Curb >>> Climate Change - Scientific American >>> >>> >>> >>> Vocanic euptions have impacts that are much more imporant than their >>> transitory impact on climate. Their most significant role is in >>> replenishing critcal elements to preserve the fertiliity of the soil. >>> >>> This in turn of course raises the issue of what the impact will be of >>> human efforts to do SRM on the rest of the ecosystems. This in turn is the >>> cause for concern about unexpected consequences and a concern that cannot >>> be addressed >>> >>> by theory or experiment because complex systems evolution is not >>> predictable and we only have one planet. The important aspect of climate >>> change from a risk perspective is not the first order linear responses but >>> rather whether one crosses some tipping point where the internal feedbacks >>> drive the system to a very different and usually catastrophic state. Such >>> tipping points are an inherent property of both the climate and the >>> ecosystems and ala the butterfly effect are inherently unpredictable. >>> >>> Thus the real issue is not how SRM is like volcanoes but rather what are >>> the unintended feedback from SRM. As a physicist ,and not a DAC advocate, >>> the fact is that DAC with permanent storage is the path to address the risk >>> of catastrophic climate change that has the lowest risk of triggering >>> adverse impacts compared to alternatives when implemented at a global >>> scale for any signiifcant period of time. >>> >>> >>> >>> It is clear to that all of us share the goal of wanting to prevent the >>> consequences of catastrophic climate change. So in the positive spirit of >>> tryimg to develop a consencus ageneda I assert >>> >>> >>> >>> The BEST path to address the threat of catastrophic climate change >>> involves DAC with permeant storage -it is necessary . >>> >>> >>> >>> I respectfully ask for resposes to this assertion and that we have a >>> constructive dialoque to see if if stands up to scrutiny. I do not want >>> to be asserting an incorect postion but I do want our community >>> >>> to develop a clear science based consencus for the best actions to take. >>> >>> >>> >>> Again to be clear I personally support R&D on SRM but in the context >>> that DAC with permanent storage is the clear priority. If my assertion is >>> wrong and in fact we have no low risk and cost path to addressing the risk >>> than of course SRM would have a high priority and I would want us to be >>> asserting that . >>> >>> >>> >>> On Sat, Dec 2, 2017 at 11:10 AM, Michael Hayes <[email protected]> >>> wrote: >>> >>> Sentinel-SP5 feed: >>> >>> http://m.esa.int/spaceinimages/Images/2017/12/Sentinel-5P_ca >>> ptures_Bali_volcanic_eruption >>> >>> >>> -- >>> 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 https://groups.google.com/group/geoengineering. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> >>> >>> -- >>> >>> CONFIDENTIAL INFORMATION: This email message and all attachments contain >>> confidential and privileged information that are for the sole use of the >>> intended recipients, which if appropriate applies under the terms of the >>> non-disclosure agreement between the parties. >>> >>> -- >>> 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 https://groups.google.com/group/geoengineering. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> CONFIDENTIAL INFORMATION: This email message and all attachments contain >> confidential and privileged information that are for the sole use of the >> intended recipients, which if appropriate applies under the terms of the >> non-disclosure agreement between the parties. >> -- >> 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 https://groups.google.com/group/geoengineering. >> For more options, visit https://groups.google.com/d/optout. >> >> >> > > > -- > CONFIDENTIAL INFORMATION: This email message and all attachments contain > confidential and privileged information that are for the sole use of the > intended recipients, which if appropriate applies under the terms of the > non-disclosure agreement between the parties. > > > -- CONFIDENTIAL INFORMATION: This email message and all attachments contain confidential and privileged information that are for the sole use of the intended recipients, which if appropriate applies under the terms of the non-disclosure agreement between the parties. -- 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 https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
