It turns out that about 90% of the refined crude oil is burned for energy and the remaining 10% is further processed into products that are essential to our economy (see text and figure below from a recent Facebook post). Since refining a barrel of oil is an “all or nothing” process, to get the 10% that’s not burned you will also get the 90% that is currently burned (so “you can’t just take the “good stuff” out a barrel of crude oil” and ignore the rest). In a capitalistic system, the price for the various “crude oil extracts” are based on supply and demand, and, as a result, the products from the entire refined barrel of oil get consumed. I am not an economist, but I would think that as the demand for the “fossil fuel” portion from refined oil is reduced (as transportation is electrified, etc.) while the demand for the non-fossil fuel portion remains constant (assuming the likely increase in demand is met by non-oil alternatives), the prices for gasoline, diesel, etc., will decline as demand declines (thereby slowing the energy transition) and the prices for products from the non-fossil fuel portion will increase. This is one of the reasons that Exxon expects the energy derived from fossil fuels to remail relatively unchanged through at least 2050 (https://corporate.exxonmobil.com/sustainability-and-reports/global-outlook). And this makes it more likely that the global temperature will continue to increase at an accelerating rate, thus increasing the likely need for climate intervention.
Bruce P
==========================================================================================================
From a Facebook post (https://www.facebook.com/groups/336682515937
“ We (those of us who understand that fossil fuels are the driving force behind the climate crisis) think […] that we can “leave the oil in the ground” because it is now feasible (and economically viable) to satisfy our energy requirements using solar, wind, geothermal, and so on. To an extent, this makes sense because such technologies, coupled with batteries, can handle a high percentage of those requirements. But this completely ignores what else we are getting from that barrel of oil — that 10% that is separated from the 90% we burn.” (see figure below)
[From the 10% we get all or part of the ingredients for] “synthetic fabric (rayon, nylon, polyester, etc.), furniture (made in part from particle board), plywood (made using adhesives derived, or partially derived, from oil), most glues and resins, acrylics, vinyl (and similar) laminates, wire insulation, synthetic rubber, asphalt, PVC pipe, fertilizers, medicines, cosmetics, preservatives, shampoos, cleaners, solvents, specialty waxes and lubricants, paints, coatings, varnishes, etc.”
“While I’ve not been in the “leave it in the ground” camp, I have been in the “just use the good parts of the oil (the parts we don’t burn)” camp. It turns out, though, that alternative is also exceedingly impractical (and mostly impossible). This has to do with how crude oil is processed — with how the 90% that we burn gets separated from the 10% that we use to make all those things listed above.
The initial process applied to crude oil begins with super heating it and then feeding it into a condenser (a “fractionating column” -- see attached figure). Within that column, the crude will chemically change, creating a spectrum, or gradient, of petroleum derivatives. The majority of those are “siphoned off” and go on to be further refined, as necessary, into various fuels (e.g., propane, gasoline, kerosene, diesel and fuel oil). About 90% of the crude oil will become some sort of fuel (more accurately, 85-93%, depending on various qualities of the crude).
One portion of that gradient in the fractionating column, chemically situated between gasoline and kerosene, while it can be used as fuel, is instead extracted for use in creating the chemicals that are, in turn, used to make most all of those non-fuel petroleum based products listed earlier. This fraction of the crude oil is called naphtha. It consists of chemicals that are, put very simplistically, uniquely suited to be further processed into non-fuel products.
Another portion of that spectrum is essentially what is left over after all the burnable materials have been distilled out of the crude. For the most part, what remains is called bitumen (also known as asphalt in the U.S.). It is used to make (and/or seal) roads, roof shingles, waterproof coatings (especially for marine applications) and strong adhesives, among other things.
What is easily missed in the above is that you can’t just get the non-fuel portions out of the crude. Those portions are derived from the process that creates all the fuel products. You can’t get the naphtha and bitumen without also getting the propane, gasoline, kerosene, diesel, etc.
The fractionating process is such that you can’t just take the “good stuff” out a barrel of crude oil and then pump what’s left over back into the ground. The crude is chemically altered by the process and you’re left with fuels that are impractically dangerous to deal with, especially at the scale that would be needed.”
On Sep 26, 2025, at 10:35 AM, br...@chesdata.com wrote:
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Doug and Bruce,
This hydrocarbon pricing problem highlights a basic truth: the fastest way to accelerate emission reduction is not to halt the burning of hydrocarbons, but to capture the exhaust and convert it into useful products. That is an evolutionary approach. It accepts the reality of our existing energy system, harnesses its fruits, and corrects its harms. It redirects the infrastructure of the old world toward the needs of the new.
By contrast, the call to “Just Stop Oil” is a revolutionary fantasy: a demand to uproot the entire system in one stroke. Unsurprisingly, it has provoked an equally absurd reactionary fantasy — climate denial, the insistence that the problem does not exist. These polarised extremes feed off one another, while the planet continues to heat.
An evolutionary path — carbon capture, reuse, and conversion — avoids this futile clash. It can grow steadily while sunlight reflection manages temperature, buying time for deeper transition.
Seen against the backdrop of deep history, this is a familiar pattern. The Iron Age mentality of paranoia gave us both technology and wealth, while also setting us on a trajectory of corruption and collapse. Yet the same technological power that once forged weapons of domination can now be turned toward planetary repair. The task is not to smash the old, but to build the new until it renders the old obsolete.
Regards
Robert Tulip
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Robert –
In a capitalistic system, “carbon capture utilization and storage” (CCUS) will only work when entrepreneurs can make money (i.e., for ROIs over 10%). Governments can subsidize CCUS to a small extent, but not anywhere near the scale needed. And CCUS does not address the “legacy” CO2 that needs to be removed from the atmosphere.
Bruce P
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On Sep 27, 2025, at 10:07 AM, rob...@rtulip.net wrote:
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Hi Robert, Doug and Bruce,
Thanks for the replies.
No Robert C, I am not proposing leaving the carbon problem to the market. Global warming is primarily a security problem. Climate stability is a public good, requiring government investment and leadership. No one suggests leaving national defence to the market on the assumption that armies should be commercially profitable. Nor should such a rubric apply to climate security.
The right test here is Cooling Return on Investment (CROI) — the amount of cooling delivered per dollar spent, as Ye Tao has suggested. The UK Royal Society estimated that sunlight reflection has a CROI a thousand times higher than emission reduction. That means governments can buy real, near-term cooling for security protection at a fraction of the cost of current policies, while supporting research and development of effective carbon policies. Yet instead of measuring policy by cooling outcomes, leaders cling to the comfortable orthodoxy of “emission cuts as climate policy.”
If governments treated climate as a genuine security concern, they would invest accordingly — as readily as they do in military security. The current situation spins the dangerous myth that decarbonising the economy is the same as securing the climate. This “emission hoax” comforts the orthodox consensus driven by the renewable energy industry, now under political attack from Trump. Trump is wrong to conflate this emission hoax with a climate hoax, but his attacks inadvertently reveal the weakness of the present orthodoxy, namely, if governments truly believed climate stability was a security emergency, they would not pretend that an energy transition alone could solve it. Busting open the debate is essential, hopefully enabling an entry point for sunlight reflection — what in Australia we might call “doing a Bradbury.” The security consequences of warming are already here, from the LA fires to intensifying storms.
CCUS only becomes effective when CO₂ can be converted into profitable products. My sense is that this will work only at large scale, which creates a barrier to entry. As I set out in the AI-assisted attachment to my email to Tom Goreau and HPAC last Sunday, imagining such a new economy is a kind of science-fictional exercise — envisioning a possible, or perhaps seemingly impossible, future.
The first post in this thread explained that a frontal assault on fossil fuels has the perverse effect of destroying the business model of all hydrocarbon industries, including plastics. It is a revolutionary strategy and is therefore likely to fail on its own terms while also provoking the powerful political backlash of denial. These twin delusions — decarbonisation as climate policy and climate denial as escape — both need to be put to bed.
Doug’s suggestion that “decarbonizing is a fool’s errand” needs expansion. A key point is that decarbonising the economy, in the sense of attacking hydrocarbons “before the pipe,” does not actually accelerate emission reduction. This is a counterintuitive claim that rejects prevailing assumptions. Emission reduction means finding practical ways to decrease the amount of new CO₂ that reaches the air. That can be done before the pipe (cutting combustion) or after the pipe (using waste streams as feedstock). The polarised attack on fossil fuel industries cannot achieve emission reduction, because it provokes defiance and denial, and an unwinnable political stalemate. Recasting the acceleration agenda as “after the pipe” allows us to accept that hydrocarbons will continue to be burned, but that the waste stream can and must be mined for value instead of being vented as pollution.
Bruce noted: “In a capitalistic system, CCUS will only work when entrepreneurs can make money (i.e. for ROIs over 10%). Governments can subsidize CCUS to a small extent, but not anywhere near the scale needed. And CCUS does not address the legacy CO₂ that needs to be removed from the atmosphere.”
My response is that government engagement at the scale required is unavoidable if climate stability is seen as national security. Given that high GHG levels are unacceptable, governments must fund CCUS as they fund defence — but in a way that realistically scales. Here the “U” in CCUS — utilisation — is crucial. Profit is possible if emissions are redefined as a feedstock for new carbon industries. For example, if ecosystem restoration is recognised as a public good, public funding can support large-scale biochar production. Hydrothermal liquefaction at scale could produce a range of carbon commodities, initially from emissions. I use the acronym 7F — food, fuel, feed, fertilizer, fabric, fish and forests — to describe these new industries. That same framework opens a path to address the legacy CO₂ problem Bruce identifies. Subsidised industries built on emissions can then scale further with DAC, mining carbon from the air for industrial photosynthesis.
The Earth once maintained a stable “carbonosphere” — a dynamic balance of carbon circulating between air, water, soil, and living systems. Human activity has shattered that balance. To heal the planet, we must deliberately construct a new carbonosphere: a managed cycle in which excess atmospheric CO₂ is converted into stable reservoirs of soil, biomass, and durable products.
The goal of covering the earth with several trillion tonnes of new carbon products may sound fantastical, yet the scale of the problem leaves no lesser option. The Earth needs a new carbonosphere to heal the ravages we have inflicted on her. Climate repair demands audacious goals. Imagine tarring the world’s unsealed roads with carbon from the sky, building up agricultural and forest soils with biochar, or covering 1% of the ocean with algae photobioreactors manufactured from captured CO₂. These are staggering visions, but no more so than the trillion-dollar investments already routine in military and energy security. And it is sobering that even these fantastic ideas would only mop up a small fraction of ongoing emissions.
Before such long-term transformation can take hold, the planetary fever spike must be treated by delivering cooling now. That means reversing the accelerating darkening of the Earth. Again, the CROI lens shows the way: sunlight reflection can deliver orders of magnitude more cooling per cost than emissions cuts, providing the immediate security shield the world needs. What is required is substantial government-led investment under an Albedo Accord, modelled on the Montreal Protocol, to identify and deploy the safest, fastest and most effective methods to restore planetary reflectivity.
Regards,
Robert Tulip
The only cross-cultural moral principle that is generally recognized is the Golden Rule (whether framed positively “do unto” -- or negatively – “do not do unto”) . Of course, our current culture of selfish, liberal individualism is in serious tension with that fundamental morality. But focusing on the Golden Rule would help.
Josh
Find the people whom they care about (if they are not total narcissists – many are) and confront those people (the cared about) with the consequences of the lack of concern for those people (not for the general public), then have those people do the lobbying for you.
Here is a good discussion – among other principles -- of the need for the rich to be induced (by praise for their generosity) into helping the poor, by none other than Adam Smith. https://www.youtube.com/watch?v=ejJRhn53X2M Similar measures might work for climate. But then again, we seem to have many more narcissists these days.
Josh
Doug’s suggestion that “decarbonizing is a fool’s errand” needs expansion. A key point is that decarbonising the economy, in the sense of attacking hydrocarbons “before the pipe,” does not actually accelerate emission reduction. This is a counterintuitive claim that rejects prevailing assumptions. Emission reduction means finding practical ways to decrease the amount of new CO₂ that reaches the air. That can be done before the pipe (cutting combustion) or after the pipe (using waste streams as feedstock). The polarised attack on fossil fuel industries cannot achieve emission reduction, because it provokes defiance and denial, and an unwinnable political stalemate. Recasting the acceleration agenda as “after the pipe” allows us to accept that hydrocarbons will continue to be burned, but that the waste stream can and must be mined for value instead of being vented as pollution.
On Sep 28, 2025, at 12:19 PM, Robert Chris <robert...@gmail.com> wrote:
Robert C –
Great (and concise!) insight: “we have to find a way of getting people actively to value the survival of our current civilisations in such a way that they're willing to subordinate their own personal interests to that greater good”! (A few million may be willing, but certainly not 8 billion. And “everyone” needs to do it. )
To put that in perspective, how many of us are willing to significantly reduce our own consumption? (Perhaps to “1900” levels? And since those of in the “developed” world caused the problem and are unlikely willing to make sacrifices, what do we expect from the “developing” world, where most of the future GHG emissions will come from?)
At this point there appears to be only one option – we must assume that eventually the cost of removing CO2 from that atmosphere (and storing it) will be inexpensive enough that governments will be willing to allocate (and spend) the money needed to reduce atmospheric CO2 by thousands of gigatons. (Personally, I doubt that will ever happen. At $100/ton it would cost $100 Trillion to remove 1,000 GT of CO2.)
While we are waiting for that to happen, there is a very good chance that in the next few decades we will suffer some very serious (and irreversible) consequences from climate change unless we decide to proactively intervene in the climate system by making the Earth more reflective. If that is the case, we should start planning our intervention strategy sooner rather than later.
Some additional thoughts:
I think we should change our focus on addressing climate change from 2100 to 2050 due to the likely very serious consequences of global warming by 2050. Because there are so many factors that contribute to global warming (e.g., greenhouse gas emissions, carbon feedbacks, aerosols, clouds, etc.) it is not possible to significantly narrow the range of possible future temperature increases for 2050 (perhaps 1.8-2.5⁰C). Since the range of uncertainty will not likely be narrowed significantly in the next five years, a reasonable approach that can be used now for “planning purposes” is to “hope for the best but plan for the worst”: i.e., hope that the world will come close to reaching “net zero” emissions in 2050 but devise a “contingency plan” that can be implemented if the expected temperature increase in 2050 exceeds some “red line”. What is really needed now are discussions about:
Having the above might help get the “buy-in” we need for at least doing some SRM “research” and give is a “feel” as to how soon SRM needs to be deployed.
Cheers!
Bruce P
John –
US CO2 emissions are roughly 5 GTCO2. At $200/ton that $1,000 Billion (or $1 Trillion) per year. Not even close to being “affordable”.
Cheers!
Bruce
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Dear Bruce-Sorry to be late to the discussion but
just a bit of hope. While the lifetime of the CO2 perturbation
is long, the lifetimes of methane, tropospheric ozone and black
carbon are short--cut their emissions and their concentrations
drop pretty fast, and so do their contributions to radiative
forcing. So, if we can go electric and get rid of their
emissions, the forcing will drop. By a calculation done a decade
or so ago, for the additional forcing added due to 21st century
emissions (so added to the legacy CO2 forcing from the 20th
century as methane, tropospheric ozone and black carbon forcing
from 20th century emissions are essentially zero), and taking a
mid-range scenario, about half of the additional forcing from
21st century emissions is due to CO2 and will have a legacy
forcing going on into the 22nd century and beyond, but about
half of the additional forcing from 21st century emission is
coming from methane and tropospheric ozone--and this
contribution will drop quickly if we get their emissions to zero
(or at least way down).
I'm not saying not to aggressively reduce CO2 emissions--all of those count and keep counting once about half is taken up by the oceans and terrestrial biosphere. But going very strongly after emissions of short-lived species can really be beneficial.
And on aerosols, sulfate and black carbon are opposite and sort of balance. With SO2 emissions dropping, we need to be working hard to also get black carbon emissions down--and that can be done with efficiency programs as emitted black carbon is really wasted energy. Now, the black carbon sources are different from where SO2 comes, so it will take a bit of effort, but it can be done given that coal plants, 2-cycle engines, etc. are headed down for other reasons due to their inefficiency.
So, my hope is CO2 emissions drop as electricity takes over, and this can happen due to market forces as renewable electricity is lower cost, and so what we need to do is do all we can to remove barriers facing renewable electricity. The one I am involved with is promoting a national high-voltage direct current supplement to the present HV AC transmission grid per ideas given in Sandy MacDonald's op-ed at https://thehill.com/opinion/energy-environment/4199708-for-direction-on-a-modern-electric-grid-follow-the-interstate-highways/
Best, Mike
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but a trillion divided by 300 million is like cappuccino money?
like a louis vuitton bag
my question is serious - we “just” need to change our minds and insist on carbon negative / eco positive everything
it seems like we’re just not saying the quiet bit out loud…
or the people with the guns like things as they are
https://ourworldindata.org/co2-emissions
On Sep 28, 2025, at 4:15 PM, br...@chesdata.com wrote:
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John -
Maybe, but try raising taxes to get $1Trillion – that’s about $7,500 per US household (and try selling that to an American public who strenuously objected to a 4 cent/gallon tax increase gasoline about 30 years ago). No US politician would ever support such a measure.
I can’t see many minds being changed to support carbon negative anything, unless there is a good ROI. Capitalism is not up to the task.
Bruce
Sorry Doug, what are “the larger issues” you were thinking of than whether decarbonising can work? Are you implying this is a small issue? I am not sure how your comments here constitute “closure”. It seems to me this question of whether accelerating emission reduction happens before or after the pipe is an immense one that has not really been discussed. Regards, Robert
Hi Bruce,
Global warming is caused by Greenhouse Gases. To solve the problem - remove the cause.
Methane removal with Tropospheric Ferric Chloride Dispersion (TFCD) costs around 0.50 USD per tonne of CO2e. It would cool the atmosphere by 0.5 - 1.0 °C. It is safe, natural and affordable. Doing it will bring an excellent ROI, henceforth it will be done.
Regards
Oswald
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
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Hi Robert,
I am surprised that a security framing of climate risk is new to you. For me, any systemic threat to safety and stability counts as a security issue. Climate collapse is the largest conceivable safety threat for humanity, so it is entirely reasonable to discuss heating in the same strategic lens that governments already use for food security, energy security, military security, and national security. What is striking is that while the word “security” is used across all these domains, we have not adequately explored whether it carries the same meaning in each.
On that basis, I don’t think climate change is sui generis. It may be unprecedented in scale and complexity, but the conceptual lens of security is available to us. Governments exist in no small part to secure their nations, not only against intentional enemies but also against remorseless natural processes. The security sector has long understood that floods, famines, and plagues destabilise states as much as armies do. Climate collapse is the mother of all destabilisers.
This raises the practical question: what is climate security? I would argue it is not achievable through emission reduction alone. The economics of abandoning hydrocarbons won’t allow it, if only because the same hydrocarbons are essential for non-combustible uses — plastics, chemicals, fertilisers, building materials. Cutting fuels without creating substitutes will strand assets and trigger insecurity in other systems. The Australian Security Leaders Climate Group have made a start by putting climate into the security discourse, but they exclude any consideration of sunlight reflection or other planetary cooling measures, which means they aren’t yet offering viable transition strategies.
As for Parfit’s non-identity puzzle, I regard that line as both idiotic and immoral against the context of the sixth extinction. When the survival of ecosystems and of civilisation itself is at stake, to suggest we have no obligations to those not yet in utero is a kind of moral evasion. Extinction wipes out the possibility of flourishing altogether. Our obligations are not to particular unborn individuals but to the continuity of life and culture.
So yes, we need new tools — but the security framework is not alien. It gives us a language already embedded in statecraft for grappling with systemic threats. The missing step is to broaden security beyond military and resource competition to include the atmospheric and ecological stability without which all other forms of security are meaningless.
Regards
It’s been tried before, providing lessons.
Framing global climate change as a “security crisis” was pioneered decades ago by my late colleague Norman Myers, who as the world’s top expert on deforestation and land degradation got to be invited to talk to government leaders at their conclaves about how they were flooding their own naval bases, airports, and military installations because they cut trees down and turned them into CO2.
He did get them to pay lip service to the idea that there was an environment out there to be “controlled”, but it’s not clear that anything more than purely symbolic actions resulted.
Can we expect different results appealing to the pocket books of people destroying the planet who are now even more firmly in control?
To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/01f501dc3110%247032fde0%245098f9a0%24%40rtulip.net.
The explosion of Toba 74,000 years ago almost wiped out humanity, and triggered an Ice Age, but by around 60,000 years ago people had reached Australia.
Patrick Nunn has written several highly recommended books documenting stories of sudden sea level rise from around Australia. The Dhuwa Yolngu people of Arnhem Land in the Northern Territories of Australia, still remember the places they lived that were flooded when sea level rose rapidly at the end of the last Ice Age and they had to flee in front of the rising waters.
The memories of the last major global warming and sea level rise are preserved in ancient songs and bark paintings by the hereditary Liyawagumirr clan. The knowledge is a clan secret and can’t be shared with outsiders (I’m a hereditary member, but don’t speak the language). We are watching our last cultural memories of extreme global warming and sea level rise vanish because the unique histories are being lost by constant pressure to mimic white man’s religion and stories instead of preserving our own. Since humanity hasn’t learnt anything from the past, we will have to relearn the impacts of uncontrollably rapid global climate change the hard way.
I hope to return soon to work with another unconquered Indigenous people in Mexico whose private oral histories tell of a tsunami that catastrophically flooded their land, killing most, and whose traces are clearly visible, but are undocumented. I suspect it was caused by an earthquake in the Sea of the Cortez after present sea levels had been reached in the early Holocene.
Thomas J. F. Goreau, PhD
President, Global Coral Reef Alliance
Chief Scientist, Biorock Technology Inc., Blue Regeneration SL
Technical Advisor, Blue Guardians Programme, SIDS DOCK
37 Pleasant Street, Cambridge, MA 02139
gor...@globalcoral.org
www.globalcoral.org
Phone: (1) 857-523-0807 (leave message)
Books:
Geotherapy: Innovative Methods of Soil Fertility Restoration, Carbon Sequestration, and Reversing CO2 Increase
Innovative Methods of Marine Ecosystem Restoration
On the Nature of Things: The Scientific Photography of Fritz Goro
Geotherapy: Regenerating ecosystem services to reverse climate change
No one can change the past, everybody can change the future
It’s much later than we think, especially if we don’t think
Those with their heads in the sand will see the light when global warming and sea level rise wash the beach away
“When you run to the rocks, the rocks will be melting, when you run to the sea, the sea will be boiling”, Peter Tosh, Jamaica’s greatest song writer
“The Earth is not dying, she is being killed” U. Utah Phillips
“It is the responsibility of intellectuals to speak the truth and expose lies” Noam Chomsky
Hi Robert,
I am surprised that a security framing of climate risk is new to you. For me, any systemic threat to safety and stability counts as a security issue. Climate collapse is the largest conceivable safety threat for humanity, so it is entirely reasonable to discuss heating in the same strategic lens that governments already use for food security, energy security, military security, and national security. What is striking is that while the word “security” is used across all these domains, we have not adequately explored whether it carries the same meaning in each.
On that basis, I don’t think climate change is sui generis. It may be unprecedented in scale and complexity, but the conceptual lens of security is available to us. Governments exist in no small part to secure their nations, not only against intentional enemies but also against remorseless natural processes. The security sector has long understood that floods, famines, and plagues destabilise states as much as armies do. Climate collapse is the mother of all destabilisers.
This raises the practical question: what is climate security? I would argue it is not achievable through emission reduction alone. The economics of abandoning hydrocarbons won’t allow it, if only because the same hydrocarbons are essential for non-combustible uses — plastics, chemicals, fertilisers, building materials. Cutting fuels without creating substitutes will strand assets and trigger insecurity in other systems. The Australian Security Leaders Climate Group have made a start by putting climate into the security discourse, but they exclude any consideration of sunlight reflection or other planetary cooling measures, which means they aren’t yet offering viable transition strategies.
As for Parfit’s non-identity puzzle, I regard that line as both idiotic and immoral against the context of the sixth extinction. When the survival of ecosystems and of civilisation itself is at stake, to suggest we have no obligations to those not yet in utero is a kind of moral evasion. Extinction wipes out the possibility of flourishing altogether. Our obligations are not to particular unborn individuals but to the continuity of life and culture.
So yes, we need new tools — but the security framework is not alien. It gives us a language already embedded in statecraft for grappling with systemic threats. The missing step is to broaden security beyond military and resource competition to include the atmospheric and ecological stability without which all other forms of security are meaningless.
Regards
Robert Tulip
On Sep 29, 2025, at 2:05 AM, rob...@rtulip.net wrote:
Hi Oswald –
I have pasted below ChatGPT responses to
I would appreciate your comments on ChatGPT’s “accuracy”. Thoughts:
Cheers!
Bruce
===================================================================
Methane removal with Tropospheric Ferric Chloride Dispersion
ChatGPT said:
Thought for 18s
Nice—that’s a meaty topic. Below I’ll give a concise, source-backed explainer of the idea usually called iron-salt aerosol (ISA) / FeCl₃ tropospheric dispersion for methane removal: how it’s supposed to work, what the modelling/lab literature says about possible effectiveness, the main risks and unknowns, where research is right now, and sensible next steps (technical + governance). I’ll flag the strongest citations inline so you can follow up.
What the idea is (mechanism, short)
The basic proposal: disperse iron salts such as ferric chloride (FeCl₃) as aerosols into the lower troposphere (or into ship exhaust plumes, coastal plumes, etc.). Sunlight photolyzes iron-chloride–containing particles (or promotes redox reactions) to produce reactive chlorine atoms (Cl·) and/or to enhance OH production via Fenton/photo-Fenton chemistry. Chlorine atoms react with methane much faster than OH (per-atom), so increasing Cl· in the lower troposphere could accelerate methane oxidation, turning CH₄ → CO₂ + H₂O and thereby lowering near-term radiative forcing. This mimics some natural processes when mineral dust mixes with sea salt. ACP+1
What models & papers say about potential effectiveness
Main risks, tradeoffs and uncertainties
Where research stands (recent & ongoing)
Practical technical questions people ask (and current answers)
Recommended research & governance pathway (short)
Bottom line (tl;dr)
FeCl₃/iron-salt aerosol dispersion is a plausible atmospheric methane-removal concept with a clear chemical mechanism (photoproduction of Cl and enhanced oxidation), and it could accelerate methane loss. However, the scale, efficiency, and net climate/air-quality/ecosystem outcomes are highly uncertain today — there are credible pathways to both meaningful methane reductions and to unintended counter-effects (e.g., ozone/OH perturbations). The research community recommends careful lab, model and tightly constrained small-scale tests and parallel governance before any larger deployment. ACP+2Nature+2
==========================================================================================================
Draft a research/planning/implementation schedule for iron-salt aerosol (ISA) / FeCl₃ tropospheric dispersion for methane removal
ChatGPT said:
Thought for 4 seconds
Great — below is a practical, ready-to-use research → planning → small-scale deployment → staged upscaling schedule for iron-salt aerosol (ISA / FeCl₃) tropospheric dispersion aimed at methane removal. It’s organized as phases with timelines, tasks, milestones, deliverables, decision gates (go / no-go criteria), monitoring & safety plans, approximate team roles, and a rough indicative budget band for each phase. Treat the timeline as adaptive — each phase ends with an evidence-based decision gate before moving on.
High-level overview (phases & timeline)
Total program baseline: ~6–8 years from start to potential operational scaling — but may stop or pivot at multiple decision gates depending on outcomes.
Phase A — Scoping, stakeholder & governance design (0–6 months)
Goal: create clear objectives, risk matrix, engagement & governance framework and initial experimental protocols.
Tasks
Deliverables (month 3 and month 6)
Decision gate (end Phase A — go/no-go)
Indicative budget: $0.2–0.6M (setup, workshops, legal reviews).
Team: program director, project manager, policy & legal lead, community engagement lead, lead scientists (chemistry, ecology), communications.
Phase B — Controlled laboratory and process studies (6–30 months)
Goal: quantify fundamental process parameters: chlorine atom yield per mass FeCl₃, particle behavior, photo-Fenton and halogen chemistry across realistic environmental conditions.
Tasks
Milestones & deliverables
Decision gate (end Phase B — go/no-go to expanded field pilot)
Indicative budget: $2–6M (labs, personnel, equipment, toxicology studies).
Team: atmospheric chemists, aerosol physicists, environmental toxicologists, lab technicians, instrument engineers.
Phase C — Process / regional atmospheric modelling & integrated impact analysis (6–30 months, parallel)
Goal: use lab results to run chemistry-transport and Earth-system sensitivity experiments to estimate net methane lifetime change, ozone/air-quality impacts, deposition patterns, and climate forcing.
Tasks
Milestones & deliverables
Decision gate (parallel to Phase B)
Indicative budget: $1–4M.
Team: atmospheric modelers, climate scientists, data scientists, economists, risk analysts.
Phase D — Controlled field pilots (ship-plume / coastal) (30–48 months)
Goal: conduct small, tightly monitored real-world releases to validate lab & model predictions and verify measurement techniques.
Design principles
Tasks
Milestones & deliverables
Decision gate (end Phase D)
Indicative budget: $5–15M (ship time, instruments, personnel, independent monitoring).
Team: field campaign PI, ship crew, atmospheric chemists, instrument teams, independent observers, community liaisons.
Phase E — Mesoscale field trials & socio-economic assessment (48–72 months)
Goal: evaluate regional effectiveness and transboundary impacts; test monitoring & governance protocols at larger scale.
Tasks
Milestones
Decision gate (end Phase E)
Indicative budget: $20–60M.
Team: extended: policy/regulatory leads, international relations, public health, expanded scientific teams.
Phase F — Regulatory review / staged operational scaling (72+ months)
Goal: if evidence supports, move to phased operational deployment with strict oversight, monitoring, and exit ramps.
Tasks
Indicative budget: dependent on scale — tens to hundreds of millions annually if pursued operationally.
Monitoring, measurement & verification (MMV) — required across all phases
Core MMV parameters
MMV principles
Safety, ethics & governance highlights
Decision criteria (concise)
Move forward only if:
Stop / pause if:
Example quick Gantt (years from start)
Year 0: Phase A (0–0.5 yr)
Years 0.5–2.5: Phase B & Phase C (lab + models, parallel)
Years 2.5–4: Phase D (ship/coastal pilots)
Years 4–6: Phase E (mesoscale trials & policy integration)
Year 6+: Phase F if go.
Team & governance (core roles)
Indicative total budget (very rough)
Total program (through Phase E): ~$30–90M (highly dependent on trial scale and instrument needs). These are indicative — budgets should be refined in Phase A.
========================================================================================
A 2-page “decision gate” checklist with exact go/no-go metrics and measurement thresholds.
ChatGPT said:
Below is a two-page decision-gate checklist you can drop into a planning packet.
It lays out each program phase, the specific go / pause / no-go criteria, and quantitative or documented thresholds wherever current science allows.
Values are given as illustrative planning numbers based on the present literature and should be refined as lab data emerge.
Iron-Salt Aerosol (ISA / FeCl₃) Methane-Removal Program
Decision-Gate Checklist (v1.0)
Phase A — Scoping & Governance (0-6 mo)
Objective: establish governance, permitting, and stakeholder consent.
Metric | Go | Pause | No-Go |
Stakeholder engagement | Written support or formal consultation agreements from ≥80 % of identified local, indigenous, and national stakeholders | <80 % support but outstanding issues can be resolved within 3 months | Irreconcilable opposition from key regulatory bodies or directly affected communities |
Regulatory pathway | At least one permitting authority issues a conditional letter of intent for lab/field pilots | Only informal interest, needs more detail | Formal regulatory rejection |
Risk register | All high-risk items have mitigation plans rated “acceptable” by independent review panel | One or more unmitigated “high” risks, additional analysis required | High-risk items without feasible mitigation |
Phase B — Laboratory & Process Studies (6-30 mo)
Objective: quantify chlorine-atom production and toxicology.
Metric | Go | Pause | No-Go |
Chlorine yield (photochem. Cl· atoms per gram FeCl₃ aerosol, 50–70 % RH, mid-latitude sunlight) | ≥0.3 µmol Cl· g⁻¹ min⁻¹ sustained for ≥30 min | 0.1–0.3 µmol g⁻¹ min⁻¹ or large variance (>50 % SD) | <0.1 µmol g⁻¹ min⁻¹ |
OH impact sign (box-model net Δ[OH]) | Net positive or neutral (<±5 %) | Slight negative (–5 % to –15 %) | Strong negative (<–15 %) |
Acute ecotoxicity (72 h LC50 for representative plankton/larvae) | No significant mortality (<10 % vs control) at ≤2× projected deposition | 10–25 % mortality | >25 % mortality |
Aerosol lifetime | ≥12 h atmospheric half-life under coastal conditions | 6–12 h | <6 h |
Decision: advance only if all Go criteria met and none fall in No-Go.
Phase C — Atmospheric & Integrated Modeling (parallel 6-30 mo)
Objective: predict net methane removal and side effects.
Metric | Go | Pause | No-Go |
Net global methane lifetime change (ensemble mean) | ≥10 % reduction with 95 % CI not overlapping zero | 5–10 % reduction or CI overlaps zero | <5 % reduction or net increase |
Regional ozone change | ±5 ppbv or less in populated areas | 5–10 ppbv | >10 ppbv or any increase causing >70 ppbv total |
Wet/ dry deposition of iron (marine) | <0.2 mg m⁻² d⁻¹ averaged over sensitive reefs | 0.2–0.5 mg m⁻² d⁻¹ | >0.5 mg m⁻² d⁻¹ |
Phase D — Controlled Field Pilot (30-48 mo)
Objective: validate lab/model findings in situ.
Metric | Go (for mesoscale trial) | Pause | No-Go |
Methane removal signal | ≥5 % decrease in CH₄ mixing ratio downwind vs control (≥95 % confidence) | Detectable but <5 % or 80–95 % confidence | No statistically significant decrease |
Ozone perturbation | Change ≤+3 ppbv (1-h avg) over baseline in any populated or ecologically sensitive receptor | +3–5 ppbv | >+5 ppbv |
Public-health air quality (PM₂.₅, HCl) | Within WHO daily guidelines | Marginal exceedance correctable within 24 h | Sustained exceedance |
Community acceptance | Ongoing consent from all local stakeholders and regulators | Temporary withdrawal of one jurisdiction pending clarification | Revocation of key permits or local veto |
Phase E — Mesoscale Field Trials (48-72 mo)
Objective: assess regional efficacy and transboundary impacts.
Metric | Go (toward operational proposal) | Pause | No-Go |
Net methane lifetime reduction (regional) | ≥15 % relative to control scenario with 95 % CI | 8–15 % | <8 % or increase |
Cross-border ozone / deposition impacts | Within WHO & UNEP guidelines and <5 % modeled probability of exceedance | 5–10 % probability | >10 % probability or actual exceedance |
International governance | Multilateral agreement or treaty framework in place | Framework in negotiation | Key downwind nations object or refuse |
Phase F — Operational Scaling (≥72 mo)
Proceed only if all prior gates met and:
Cross-Phase Stop Rules (apply anytime)
Use & Updates
This checklist is a living document: replace illustrative numeric thresholds with empirically derived ones as Phase B/C results mature.
Attach to program management plan; require independent board sign-off at each gate.
That's the easy bit. The tougher bit is to get people to care. As I said in an earlier message in this thread 'Somehow, we have to find a way of getting people actively to value the survival of our current civilisations in such a way that they're willing to subordinate their own personal interests to that greater good.' I have no idea how we can do that at the scale and speed necessary for a decisive intervention to stop and reverse global warming. We seem to be prisoners of the human condition. Optimism clouds our judgement.
Dear Bruce,
pls find my answers below,
Regards
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
Von: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> Im Auftrag von br...@chesdata.com
Gesendet: Montag, 29. September 2025 15:11
An: 'healthy-planet-action-coalition' <healthy-planet-...@googlegroups.com>
Betreff: [HPAC] Methane removal with Tropospheric Ferric Chloride Dispersion
Hi Oswald –
I have pasted below ChatGPT responses to
I would appreciate your comments on ChatGPT’s “accuracy”. Thoughts:
TFCD is the dispersion method. The question is not if it can be implemented, that’s out of doubt.
We have shown in a number of ways that it does indeed work.
Let me do the simple logic:
STEP ONE
CONCLUSION ONE Humans can and actually do warm and cool the climate by emitting warming and/or cooling gases. They can, for example, emit more SO2 and cool the climate. This is proven fact.
STEP TWO
This is an important step. It’s a bit like in cancer treatment. Non-smoking is good for avoiding lung cancer. But once you got cancer, a healthy lifestyle will not heal you. We are in a situation where “avoiding GHG emissions” is good advice but will not heal the patient. We need a more potent drug. Potent drugs for human patients trigger the body to fight the cancer. We need something analogous for patient earth, for nature, to heal the climate.
CONCLUSION TWO We need a potent substance which can help nature fight global warming
STEP THREE
CONCLUSION THREE There are chemical compounds, which exist in nature, which can be used to trigger nature to cool/heal/balance the system, if used wisely.
STEP FOUR
CONCLUSION FOUR Ferric chloride provides a strong, potent drug to trigger the two natural events necessary to cool the climate.
STEP FIVE
CONCLUSION FIVE Human technology, in combination with a potent substance e.g. ferric chloride, can overcome the scaling problem which marred all climate interventions up to now.
These logical steps lead us (AMR has 45 shareholders) to believe that a cooling intervention with ferric chloride is natural, safe and efficient.
It will work
According to IPCC methane is responsible for around 30% of all global warming. This share is growing, we think it will be 40% by 2050.
All methane but the preindustrial 0.7 ppm.
Removing methane would reduce global warming by 30% now. In 2050 it will be 40% our of 2 °C which is 0.8 °C. Add the effect of iron fertilization…
It will certainly make if you sell the emission rights on the market, but that would defeat its own purpose. To avoid that we advocate public financing.
Right. We reckon it will cost around 2 billion USD / year.
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Dear Mike –
Thanks for your thoughts. There are certainly lot of “actions” that are being taken (and can be taken) to address global warming, and we can certainly hope that enough will be done to limit the temperature increase to an “acceptable” level in 2050. But if you look at historical primary energy (from Our World In Data - https://ourworldindata.org/grapher/global-energy-substitutionuse – attached xlsx has the data), project exponential growth of wind and solar, and project a liner trend in “Other” (all but FF, W, & S) then the energy from fossil fuel use declines less than 10% from 2025 to 2050 (from 142421 terawatt-hours in 2025 to 130488 terawatt-hours in 2050). And even solar and wind increase and 1.5 times the current exponential growth rate the energy from fossil fuel use only declines by about 33% from 2025 to 2050 (from 142421 terawatt-hours in 2025 to 130488 terawatt-hours in 2050).
Using my “emulator” (https://scenexp.org/whatifexplorer.aspx), if fossil fuel use declines 10% from 2025 to 2050 the resulting CO2 RF will change 0.06 W/m-2. And a 33% decline will reduce the CO2 RF about 0.23 W/m-2. The expected change in the Earth’s albedo through 2050 will likely negate temperature decline from the reduced CO2 emissions.
Given the above, for “planning purposes” it makes sense to assume that through (1) primary energy will continue to increase at the current linear rate and (2) fossil fuel use will decrease between 10% and 33% (a “temperature increase impact of between -0.03 and -0.1°C from emissions continuing at the current rate).
Is there a better way to estimate (for planning purposes) a decline in fossil fuel use through 2050?
Cheers!
Bruce
Right now, it is a lot less expensive to reduce emissions, and we're having trouble doing that. The cheapest way to avoid pulling CO2 from the atmosphere is not to emit it and leave it in the ground. Doing that first would seem elementary, but it is unfortunately slow going.
Mike
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On Sep 27, 2025, at 10:07 AM, rob...@rtulip.net wrote:
Doug and Bruce,
This hydrocarbon pricing problem highlights a basic truth: the fastest way to accelerate emission reduction is not to halt the burning of hydrocarbons, but to capture the exhaust and convert it into useful products. That is an evolutionary approach. It accepts the reality of our existing energy system, harnesses its fruits, and corrects its harms. It redirects the infrastructure of the old world toward the needs of the new.
By contrast, the call to “Just Stop Oil” is a revolutionary fantasy: a demand to uproot the entire system in one stroke. Unsurprisingly, it has provoked an equally absurd reactionary fantasy — climate denial, the insistence that the problem does not exist. These polarised extremes feed off one another, while the planet continues to heat.
An evolutionary path — carbon capture, reuse, and conversion — avoids this futile clash. It can grow steadily while sunlight reflection manages temperature, buying time for deeper transition.
Seen against the backdrop of deep history, this is a familiar pattern. The Iron Age mentality of paranoia gave us both technology and wealth, while also setting us on a trajectory of corruption and collapse. Yet the same technological power that once forged weapons of domination can now be turned toward planetary repair. The task is not to smash the old, but to build the new until it renders the old obsolete.
Regards
Robert Tulip
From: 'Douglas Grandt' via Healthy Planet Action Coalition (HPAC) <healthy-planet-...@googlegroups.com>
Sent: Saturday, 27 September 2025 2:20 AM
To: br...@chesdata.com
Cc: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>
Subject: Re: [HPAC] Why we will be refining lots of crude oil for a very long timethis is so clear … it takes a picture to convey … a termination shock of a different kind and magnitude.
Even retiring some 800 refineries one-by-one with their respective fields of various API grade crude each is designed to refine) in a strategic global optimal logistic sequence would be akin to a worsening DEATH BY A THOUSAND CUTS (~800 to be more precise).
If Hansen’s original admonition to reduce emissions 6% per annum, the descent would be at a rate of about one refinery each week for sixteen years.
Progress to-date can be counted on one hand but offset my about 50 new builds in the past decade
Doug G
On Sep 26, 2025, at 10:35 AM, br...@chesdata.com wrote:
It turns out that about 90% of the refined crude oil is burned for energy and the remaining 10% is further processed into products that are essential to our economy (see text and figure below from a recent Facebook post). Since refining a barrel of oil is an “all or nothing” process, to get the 10% that’s not burned you will also get the 90% that is currently burned (so “you can’t just take the “good stuff” out a barrel of crude oil” and ignore the rest). In a capitalistic system, the price for the various “crude oil extracts” are based on supply and demand, and, as a result, the products from the entire refined barrel of oil get consumed. I am not an economist, but I would think that as the demand for the “fossil fuel” portion from refined oil is reduced (as transportation is electrified, etc.) while the demand for the non-fossil fuel portion remains constant (assuming the likely increase in demand is met by non-oil alternatives), the prices for gasoline, diesel, etc., will decline as demand declines (thereby slowing the energy transition) and the prices for products from the non-fossil fuel portion will increase. This is one of the reasons that Exxon expects the energy derived from fossil fuels to remail relatively unchanged through at least 2050 (https://corporate.exxonmobil.com/sustainability-and-reports/global-outlook). And this makes it more likely that the global temperature will continue to increase at an accelerating rate, thus increasing the likely need for climate intervention.
Bruce P
====================================================================================
“ We (those of us who understand that fossil fuels are the driving force behind the climate crisis) think […] that we can “leave the oil in the ground” because it is now feasible (and economically viable) to satisfy our energy requirements using solar, wind, geothermal, and so on. To an extent, this makes sense because such technologies, coupled with batteries, can handle a high percentage of those requirements. But this completely ignores what else we are getting from that barrel of oil — that 10% that is separated from the 90% we burn.” (see figure below)
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Dear Oswald –
Thanks for your reply. Do you have any timeframes for possible testing/implementation? How much iron would be injected into the atmosphere? How much cooling would the resulting iron fertilization cause?
Re “According to IPCC methane is responsible for around 30% of all global warming. This share is growing, we think it will be 40% by 2050.”
This does not mean that eliminating the 0.57 W/m-2 of current anthropogenic methane (https://github.com/ClimateIndicator/forcing-timeseries/blob/main/output/ERF_best_1750-2022.csv) would reduce the temperature increase by 0.8°C in 2050. If you look at the IPCC’s AR6 data for the total RF and temperature increase for the 470 scenarios (for a 67% chance of not exceeding the temperature target) – see attached xlsx) you will see that there is a reasonably good correlation between RF and the expected temperature increase (see graph for 2045). If emissions continue at the current pace, the total radiative forcing will increase from about 3.13 W/m-2 in 2025 to about 3.7 W/m-2 in 2040 and 4.0 W/m-2 in 2050. The two tables below show the expected temperature increases for two RF values (3.7 and 4.0) and the expected temperature increase if the 0.57 RF from anthropogenic methane were eliminated. It appears that a better estimate for 2050 would be a 0.25°C decrease for methane removal.
Cheers!
Bruce P
| RF | RF-0.57 | Temp Change |
Year | 3.70 | 3.13 | |
2035 | 1.74 | 1.54 | 0.20 |
2040 | 1.83 | 1.60 | 0.22 |
2045 | 1.87 | 1.63 | 0.24 |
2050 | 1.92 | 1.67 | 0.25 |
| Temp Increase |
| |
| RF | RF-0.57 | Temp Change |
Year | 4.00 | 3.43 | |
2040 | 1.92 | 1.73 | 0.20 |
2045 | 1.98 | 1.76 | 0.22 |
2050 | 2.05 | 1.81 | 0.24 |
| Temp Increase |
|
Dear Bruce,
we certainly have a timeframe, but it is very slow due to financial restrictions. If those were lifted we could be airborne within one year.
With regards to methane removal and its impact: We work under the assumption that virtually all global warming is caused by GHG. This means: Reverting the levels of GHG to preindustrial level would, with some time lag, revert temperatures to preindustrial levels. The different GHG minus the cooling particles/gases are fully reported in IPCC AR6.
Page 7 of IPCC, 2021: Summary for Policymakers
Regards
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
Hi Bruce--So, in that making, distributing and using fossil fuels takes energy as well as harmful and expensive health impacts. In projecting decrease of reliance on fossil fuels in the future, do you reduce the power needed to make it available?
And I should have added, I also favor SAI--cooler temperature should also reduce projected increase in energy demand and so emissions of CO2 if there are not enough renewables.
Best, Mike
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Hi Greg--While I agree in general, I hope the economics will be a strong incentive for the energy conversion to renewables and overcome the recalcitrance and inadequacy of voluntary actions that have been prevailing up to the present.
Best, Mike
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Hi Bruce,
I forgot to answer one question: We intend to add 300.000 tons of Ferric Chloride (FeCl3) to the atmosphere per year, for a period of 20 years. Around 34% of this is iron.
Regards
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
Von: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> Im Auftrag von br...@chesdata.com
Gesendet: Montag, 29. September 2025 19:22
An: oswald....@hispeed.ch; 'healthy-planet-action-coalition' <healthy-planet-...@googlegroups.com>
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Hi Mike –
I don’t think taking into account the reduced energy needed due to reduced fossil fuel use is needed in my “ballpark” analysis.
From ChatGPT:
Example plain-English takeaways
Since we’re only looking at a 10-30% decline in primary energy from fossil fuels, that might mean that my projection of primary energy from fossil fuels might be high by a percent or two – not enough to significantly affect the conclusion for “fossil fuel use will likely decrease between 10% and 33%” from 2025-2050.
Cheers!
Bruce
Hi Bruce--Thanks, though the lack of resulting pollution and consequent heath effects will also be a benefit (though I guess people living longer will increase overall energy use and so be compensation). But then productivity will go up if we don't have to spend time filling our gas tanks.
Mike
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Hi Greg--So, do you think potential losses from not producing from stranded assets might lead them to lower prices to keep people hooked on fossil fuels--and would that be sustainable?
Mike
Dear Oswald –
Re “Reverting the levels of GHG to preindustrial level would, with some time lag, revert temperatures to preindustrial levels” is not likely relevant to assessing the impact of eliminating methane emissions in 2050 as (1) all of the other “forcing elements” will still be around in 2050 (and likely at higher values) and (2) the critical time period for estimating the impact of methane is really the last few decades. The question that needs to be asked is “Using scientific formulas and examining data from climate models, how much will the temperature be expected to decrease in the next 25 years if anthropogenic methane emissions are eliminated?”
Since the temperature increase is dependent on the radiative forcing and the climate sensitivity (ΔT=λ x ΔF, where λ = the climate sensitivity), eliminating methane emissions in 2050 will result in a temperature change of λ x (-0.57). Therefore what is needed to assess the impact of methane removal is a good “working number” for λ.
A good “working number” for λ is then about 0.5, with a range of 0.4 to 0.6. The impact on the temperature increase of eliminating methane emissions by 2050 will likely be in the range of -0.23°C to -0.34°C, with a good “planning number” of -0.3°C (0.57 * 0.5=0.285).
Cheers!
Bruce
To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/001f01dc3171%24fcd2ef60%24f678ce20%24%40hispeed.ch.
XLSX attached
From: br...@chesdata.com <br...@chesdata.com>
Sent: Tuesday, September 30, 2025 10:36 AM
To: 'oswald....@hispeed.ch' <oswald....@hispeed.ch>; 'healthy-planet-action-coalition' <healthy-planet-...@googlegroups.com>
Subject: RE: [HPAC] Methane removal with Tropospheric Ferric Chloride Dispersion
Dear Oswald –
Re “Reverting the levels of GHG to preindustrial level would, with some time lag, revert temperatures to preindustrial levels” is not likely relevant to assessing the impact of eliminating methane emissions in 2050 as (1) all of the other “forcing elements” will still be around in 2050 (and likely at higher values) and (2) the critical time period for estimating the impact of methane is really the last few decades. The question that needs to be asked is “Using scientific formulas and examining data from climate models, how much will the temperature be expected to decrease in the next 25 years if anthropogenic methane emissions are eliminated?”
Since the temperature increase is dependent on the radiative forcing and the climate sensitivity (ΔT=λ x ΔF, where λ = the climate sensitivity), eliminating methane emissions in 2050 will result in a temperature change of λ x (-0.57). Therefore what is needed to assess the impact of methane removal is a good “working number” for λ.
A good “working number” for λ is then about 0.5, with a range of 0.4 to 0.6. The impact on the temperature increase of eliminating methane emissions by 2050 will likely be in the range of -0.23°C to -0.34°C, with a good “planning number” of -0.3°C (0.57 * 0.5=0.285).
Cheers!
Bruce
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Dear Bruce,
TFCD offers the unique possibility to counteract GHG emissions by removing excess methane and CO2. It is by far the best option we have. It will not solve the problem completely, right, we need to continue ongoing efforts to reduce emissions.
TFCD will need application over a period of 20 years to reduce methane to preindustrial levels. We would have to start in 2030 to get that done by 2050. It is technically possible and financially affordable, and it is safe, because it does not introduce anything new into nature, but relies on nature to do the bulk of the work. In IPCC there is broad agreement that reducing GHG is an acceptable way to reduce Global Warming, henceforth I see good chances it will be done.
AMR is preparing the technology for dispersion of ferric chloride. It takes years to develop such tech, and we want to be ready if and when the green light from IPCC, UNFCCC and IMO appears on the wall.
Spark is helping us with the science, that’s great to know. We are just an engineering company, with some knowhow in dispersion technology, and we need others to do the science.
I am currently in the process of writing a book, which will shed some light on the many aspects of the matter. It will be published within the next two months.
Thanks for your interest, I really appreciate your thoughtful comments
Oswald
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/000001dc3217%248fcaee30%24af60ca90%24%40chesdata.com.
Invitation – Russ George on Ocean Pasture Restoration Tomorrow (HPAC, Oct 2)
Dear Oswald, Bruce, and colleagues,
The Earth is anaemic from a lack of oceanic iron. But unlike a person grown pale and weak from iron deficiency, our planet has grown dark and volatile. More iron is urgently needed in the oceans to restore planetary health.
Iron brings a range of benefits that are highly likely to outweigh purported risks. From my work with Franz Oeste, I see Iron Salt Aerosol as one of the most promising strategies: it ensures fine distribution and delivers co-benefits for methane reduction, albedo enhancement, fisheries, and protection of the ocean carbon cycle.
Yet the UN London Protocol on Dumping of Waste wrongly classifies such restorative action as pollution—neglecting science and distorting public understanding.
To discuss these issues, as already notified, the Healthy Planet Action Coalition is hosting a talk with Russ George on Ocean Pasture Restoration:
📅 Date & Time
Thursday 2 October, 5:30 pm Eastern
10:30 pm UK • 7:30 am Friday AEST
⏱ Duration
Up to 90 minutes
🔗 Zoom Link
Join Meeting
Passcode: 662519
🌐 Speaker Website
russgeorge.net
In 2012, Russ George worked with the Haida Salmon Restoration Corporation in British Columbia to add iron to North Pacific waters at the point where salmon fingerlings most needed food. The project encountered criticism from scientific and environmental organisations and media, yet coincided with major increases in salmon yields.
Russ will share his perspective on the science and politics of ocean replenishment and reflect on its potential role in climate cooling and fisheries enhancement. His presentation will be followed by open discussion.
A further thought: the idea that renewable energy is the primary climate response underpins opposition to cooling technologies. But energy transition can only make sense within a broader framework of climate science—one that recognises the vital role of elements such as iron. Carbon is not the only element. Excluding iron restoration undermines the cooling goal of emission reduction.
I hope you can join us for what promises to be a good discussion.
Best regards,
Robert Tulip
To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/001101dc3234%24782681f0%24687385d0%24%40hispeed.ch.
Hi Robert,
excellent. WELL DONE !
Looking forward to it!
Regards
Oswald Petersen
Atmospheric Methane Removal AG
Lärchenstr. 5
CH-8280 Kreuzlingen
Tel: +41-71-6887514
Mob: +49-177-2734245
To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/01d901dc32f7%24849fac40%248ddf04c0%24%40rtulip.net.