Climate Solution Methods
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ScoreMethodsReferences
63Marine Permaculture Arrays (MPA)

MPAs and their infrastructure are designed to bring cooling and nutrients so that kelp can be grown and harvested in most cool and temperate waters, often far from land. 		View
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Develop-
ment Status 		Net Cooling Status Net Carbon Status Feasib-
ility 		Effect-
iveness 		Scal-
ability 		Time-
liness 		Gating/ Reversi-
bility 		Risk Gover-
nance & Social Accept-
ance 		Cost SCORE, sum D:L
3 3 3 9 3 3 3 9 9 9 9 63
This resembles the commonly-used Technical Readiness Level (TRL) classification system, but has three levels, not nine. Moreover, as it will typically include the consideration of several technologies, concepts and information thought useful for the Method, these are rolled into a single, overall measure of technical readiness.
This provides an indication of what is the individual Method’s potential contribution to global cooling at its maximum feasible scale. Its typical measurement unit would be negative watts per square metre (-W/m2).
This roughly coincides with the number of gigatonnes of carbon (GtC/yr) that the Method could be expected to sequester at its maximum scale, from the atmosphere, for a period equal to or greater than a century. GtC for a fraction of a century are reduced by that fraction. For simplicity, the criterion omits consideration of other important greenhouse gases (such as methane) and airborne particulates. A red score indicates a value <1, yellow 1-5, green >5 GtC/yr.
This is a composite measure indicating how achievable is the negative Net Radiative Forcing (equals Global Cooling) that combines the effects of Solar Radiation Management (SRM), or Earthly albedo enhancement, and Thermal Radiation Management (TRM) measures designed to increase heat (long wave) radiation off-planet when the Method is deployed at maximum feasible scale. Where quantitative estimates or surrogates are unavailable, qualitative estimates are made.
This is the likely Cost-Effectiveness of the Method. When it can be quantified, it is an estimate of the current US dollar cost per negative watts per square metre ($/(-W/m2)) or the Net Negative Radiative Forcing of all the cooling effects of the Method, wherever they occur on the planet above the base of the marine mixed layer. Provisionally, Red might be >$10a, Yellow $1-10a, and Green <$1a/(-W/m2), where “a” is an appropriate factor changed to reflect the actual likely range of costs. If not readily quantified, then qualitative estimates or guesses are to be made.
Scalability has several different parameters or components, any of which may be or become limiting. One component of scalability is the proportion of the world’s surface or volume that can be used to deploy it. A second is whether there is/could be sufficient raw materials/chemicals, concentrations, available energy, temperature, pressure, space or habitat, and manufacturing capability to deploy it at optimum scale in a useful timeframe. A third is whether the species, diversity and biomass of them are, or could be made sufficient, and sufficiently capable, to carry out their part in the Method. This includes humanity, its robotic helpers, laws/regulations, agreements/conventions, finances, and politicosocioeconomic practices. A fourth is whether there is, or could be constructed, whatever is required in the way of software, AI/algorithms, datastores, supporting technologies, and communications necessary for optimal scalability. A fifth is a requirement for modicum of peace&security, health, civil order, and cooperation needed for the scalability to be achieved and maintained, together with limits to food, environmental and social stresses in key populations.
This relates to how quickly the Method could be researched, developed, deployed globally, and take substantial effect - noting that many Methods will typically have some effects, both positive and negative, that are delayed by years or longer. Initially, and for a crash or moonshot program (though with existential urgency, funding, and possibly widespread participation), a Green score might have a strongly, net beneficial effect by the deployed Method occurring in <5 years, Yellow in 5-25 years, and Red in >25 years. GATING/REVERSIBILITY: Gating is whether the Method can be tested at increasing scale, whilst learning by doing to address adverse effects or cost. Reversibility relates to whether, and how quickly, a trial can be stopped and/or its effects reversed. Reversibility might be scored thus. Major adverse effects cease or substantially decline within: Green <1 month, Yellow 1- 12 months, Red >1 year.
Gating is whether the Method can be tested at increasing scale, whilst learning by doing to address adverse effects or cost. Reversibility relates to whether, and how quickly, a trial can be stopped and/or its effects reversed. Reversibility might be scored thus. Major adverse effects cease or substantially decline within: Green <1 month, Yellow 1- 12 months, Red >1 year.
Risk is used in the Risk Management or risk impact assessment sense of being compared to what would be likely to happen without the intervention. It deals with probabilities and consequences of risk events if they are realised. It compares the products of the likelihood of the risk occurring within a given time (meaning perhaps millennia for climate risks) and its impact. As climate risk is now an existential one that is now happening, our interest lies in determining quickly which Methods have acceptable risks and ones which do not risk the social acceptance of most other interventions. Green means start gated testing urgently now, Yellow means seek ways to reduce likely adverse aspects, Red means research now, but do not deploy more widely unless equivalent Methods are insufficiently effective at cooling.
This refers to the likelihood that existing forms of governance can be enhanced to satisfy the bulk of the global community of the necessity to deploy the more prospective of the Methods, first at local, then national and then international levels. Extensive community engagement is likely to be required, following proof of concept, and explanations of its likely costs, opportunities and effects. Green = (eventually) potentially acceptable and with little downside, Yellow = has some modest downsides, most of which can be offset. Red = social acceptance is unlikely unless other, comparable Methods fail.
As the Effectiveness criterion refers to the developed and globally-scaled cost of direct cooling by the Method in question, this Cost refers more to the RD&D and capital costs of researching, then deploying it at different scales and in different variants, together with the costs of Measuring, Reporting and Verifying (MRV) the results of using the Method, probably by independent bodies. It also includes insurance and recompense costs and the likely cleanup costs afterwards, together with reductions for any revenues gained, including possible carbon and cooling credits, should they eventuate. Green = likely to be profitable, Yellow = requires modest subsidies for industry and NGO participation, Red = would require extensive and ongoing public subsidy. Source TBD.
A summation of the above scores, using Red = 1, Yellow = 3, and Green = 9. Total possible = 99.
Short DescriptionMPAs and their infrastructure are designed to bring cooling and nutrients so that kelp can be grown and harvested in most cool and temperate waters, often far from land.
DescriptionThe Climate Foundation's MPAs, see https://www.climatefoundation.org/what-is-marine-permaculture.html are a means of fertilising cultivated, typically open ocean, kelp forests secured by their holdfasts onto submerged platforms, either by sinking them at night-time into waters deep enough to contain the nutrients they need for daytime growth when raised into the surface waters, or by installing baffles to re-establish the upwelling diminished by ocean warming, or by using wave or solar power to pump the deep, cool and nutrient-rich water up to where the kelp is moored in the sunlit surface waters. Where the topmost surface waters are too warm for modest, deep water pumping to cool them sufficiently for kelp to flourish, the MPAs and kelp forests attached to them may be tethered deep enough so that they do not encounter the over-warm surface water, yet still are in the photic zone where photosynthesis occurs - if at a somewhat slower rate. The growing kelp has several functions: it provides rich marine habitat; it sequesters carbon as broken-off and fast-sinking fronds; it oxygenates the surface waters; and, when periodically harvested, it provides valuable biomass from which many products can sustainably be made. Whilst the extraction at sea of key molecules from kelp harvesting is possible, using the residual biomass for carbon sequestration in the deep seems wasteful. Better use should be made possible of the whole, harvested and renewable upper segment. For this, consideration should be given to developing the Winwick Hydrothermal Liquefaction (WHL) process designed to depolymerise biomass into its constituent monomers - possibly at sea. Nutrients nearer the surface, and made available even when there is insufficient wave or solar power for pumping seawater or for lifting and sinking MPAs, may be supplemented, or entirely replaced, using Buoyant Flakes technology.
Key FunctionsKelp and other biomass production.
Innovation Dependencies
Quantification
Graphics:
TechnologyEffectsProjects
Carbon Dioxide Removal (CDR)
Upwelling
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Broken fronds increase CDR
Harvest revenues
May also use Buoyant Flakes to provide the nutrients
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MPAs and their infrastructure are designed to bring cooling and nutrients so that kelp can be grown and harvested in most cool and temperate waters, often far from land.
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Develop-
ment Status 		Net Cooling Status Net Carbon Status Feasib-
ility 		Effect-
iveness 		Scal-
ability 		Time-
liness 		Gating/ Reversi-
bility 		Risk Gover-
nance & Social Accept-
ance 		Cost SCORE, sum D:L
3 3 3 9 3 3 3 9 9 9 9 63
This resembles the commonly-used Technical Readiness Level (TRL) classification system, but has three levels, not nine. Moreover, as it will typically include the consideration of several technologies, concepts and information thought useful for the Method, these are rolled into a single, overall measure of technical readiness.
This provides an indication of what is the individual Method’s potential contribution to global cooling at its maximum feasible scale. Its typical measurement unit would be negative watts per square metre (-W/m2).
This roughly coincides with the number of gigatonnes of carbon (GtC/yr) that the Method could be expected to sequester at its maximum scale, from the atmosphere, for a period equal to or greater than a century. GtC for a fraction of a century are reduced by that fraction. For simplicity, the criterion omits consideration of other important greenhouse gases (such as methane) and airborne particulates. A red score indicates a value <1, yellow 1-5, green >5 GtC/yr.
This is a composite measure indicating how achievable is the negative Net Radiative Forcing (equals Global Cooling) that combines the effects of Solar Radiation Management (SRM), or Earthly albedo enhancement, and Thermal Radiation Management (TRM) measures designed to increase heat (long wave) radiation off-planet when the Method is deployed at maximum feasible scale. Where quantitative estimates or surrogates are unavailable, qualitative estimates are made.
This is the likely Cost-Effectiveness of the Method. When it can be quantified, it is an estimate of the current US dollar cost per negative watts per square metre ($/(-W/m2)) or the Net Negative Radiative Forcing of all the cooling effects of the Method, wherever they occur on the planet above the base of the marine mixed layer. Provisionally, Red might be >$10a, Yellow $1-10a, and Green <$1a/(-W/m2), where “a” is an appropriate factor changed to reflect the actual likely range of costs. If not readily quantified, then qualitative estimates or guesses are to be made.
Scalability has several different parameters or components, any of which may be or become limiting. One component of scalability is the proportion of the world’s surface or volume that can be used to deploy it. A second is whether there is/could be sufficient raw materials/chemicals, concentrations, available energy, temperature, pressure, space or habitat, and manufacturing capability to deploy it at optimum scale in a useful timeframe. A third is whether the species, diversity and biomass of them are, or could be made sufficient, and sufficiently capable, to carry out their part in the Method. This includes humanity, its robotic helpers, laws/regulations, agreements/conventions, finances, and politicosocioeconomic practices. A fourth is whether there is, or could be constructed, whatever is required in the way of software, AI/algorithms, datastores, supporting technologies, and communications necessary for optimal scalability. A fifth is a requirement for modicum of peace&security, health, civil order, and cooperation needed for the scalability to be achieved and maintained, together with limits to food, environmental and social stresses in key populations.
This relates to how quickly the Method could be researched, developed, deployed globally, and take substantial effect - noting that many Methods will typically have some effects, both positive and negative, that are delayed by years or longer. Initially, and for a crash or moonshot program (though with existential urgency, funding, and possibly widespread participation), a Green score might have a strongly, net beneficial effect by the deployed Method occurring in <5 years, Yellow in 5-25 years, and Red in >25 years. GATING/REVERSIBILITY: Gating is whether the Method can be tested at increasing scale, whilst learning by doing to address adverse effects or cost. Reversibility relates to whether, and how quickly, a trial can be stopped and/or its effects reversed. Reversibility might be scored thus. Major adverse effects cease or substantially decline within: Green <1 month, Yellow 1- 12 months, Red >1 year.
Gating is whether the Method can be tested at increasing scale, whilst learning by doing to address adverse effects or cost. Reversibility relates to whether, and how quickly, a trial can be stopped and/or its effects reversed. Reversibility might be scored thus. Major adverse effects cease or substantially decline within: Green <1 month, Yellow 1- 12 months, Red >1 year.
Risk is used in the Risk Management or risk impact assessment sense of being compared to what would be likely to happen without the intervention. It deals with probabilities and consequences of risk events if they are realised. It compares the products of the likelihood of the risk occurring within a given time (meaning perhaps millennia for climate risks) and its impact. As climate risk is now an existential one that is now happening, our interest lies in determining quickly which Methods have acceptable risks and ones which do not risk the social acceptance of most other interventions. Green means start gated testing urgently now, Yellow means seek ways to reduce likely adverse aspects, Red means research now, but do not deploy more widely unless equivalent Methods are insufficiently effective at cooling.
This refers to the likelihood that existing forms of governance can be enhanced to satisfy the bulk of the global community of the necessity to deploy the more prospective of the Methods, first at local, then national and then international levels. Extensive community engagement is likely to be required, following proof of concept, and explanations of its likely costs, opportunities and effects. Green = (eventually) potentially acceptable and with little downside, Yellow = has some modest downsides, most of which can be offset. Red = social acceptance is unlikely unless other, comparable Methods fail.
As the Effectiveness criterion refers to the developed and globally-scaled cost of direct cooling by the Method in question, this Cost refers more to the RD&D and capital costs of researching, then deploying it at different scales and in different variants, together with the costs of Measuring, Reporting and Verifying (MRV) the results of using the Method, probably by independent bodies. It also includes insurance and recompense costs and the likely cleanup costs afterwards, together with reductions for any revenues gained, including possible carbon and cooling credits, should they eventuate. Green = likely to be profitable, Yellow = requires modest subsidies for industry and NGO participation, Red = would require extensive and ongoing public subsidy. Source TBD.
A summation of the above scores, using Red = 1, Yellow = 3, and Green = 9. Total possible = 99.