[ { "method": "forest", "book_location": "Part II · Forests and Trees", "book_practical_scenario": 4.32, "book_physical_limit": 21.6, "ipcc": { "lower": 0.5, "upper": 10, "midpoint": 5.25, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "Afforestation/reforestation", "qualification": "A/R comparator; does not include every forest-management intervention.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 5.25 }, "assumptions": [ { "constraint_id": "suitable_share", "name": "How much land is suitable?", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Forests and Trees; reference calculation and resource case", "primary": true }, { "constraint_id": "annual_uptake", "name": "How fast do trees take up carbon?", "description": "Annual uptake on the 2.16-billion-hectare teaching wedge.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 10, "step": 0.5, "control_type": "continuous", "default_practical_scenario": 5, "default_physical_limit": 10, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Forests and Trees; reference calculation and resource case", "primary": true }, { "constraint_id": "success_share", "name": "How much is successfully delivered?", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Forests and Trees; reference calculation and resource case", "primary": true } ], "calculation": "2.16 billion ha × 50% × 5 tCO2/ha/yr × 80%", "overlaps": [ "land", "water", "nutrients", "retention" ], "issues": [], "status": "aligned_range_not_identical_scope" }, { "method": "soil", "book_location": "Part II · Soil Carbon Management", "book_practical_scenario": 1.2800000000000002, "book_physical_limit": 6.4, "ipcc": { "lower": 0.4, "upper": 6.8, "midpoint": 3.6, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-7/", "location": "§7.4.3.1", "category": "Cropland soil carbon management", "qualification": "Technical potential, medium confidence; separate from grassland soil.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 3.6 }, "assumptions": [ { "constraint_id": "eligible", "name": "How much cropland can improve?", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Soil Carbon Management; reference calculation and resource case", "primary": true }, { "constraint_id": "uptake", "name": "Annual soil-carbon gain", "description": "Gain on the fixed 1.6-billion-hectare cropland resource.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 4, "step": 0.2, "control_type": "continuous", "default_practical_scenario": 2, "default_physical_limit": 4, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Soil Carbon Management; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after deductions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Soil Carbon Management; reference calculation and resource case", "primary": true } ], "calculation": "1.6 billion ha × 50% × 2 tCO2/ha/yr × 80%", "overlaps": [ "land", "nutrients", "retention" ], "issues": [ "Book Physical Limit is below IPCC upper bound; the resource definitions differ." ], "status": "review_requested" }, { "method": "peat", "book_location": "Part II · Peatlands and Organic Soils", "book_practical_scenario": 0.030600000000000002, "book_physical_limit": 0.153, "ipcc": { "lower": null, "upper": null, "midpoint": null, "unit": "GtCO₂/yr", "status": "no_applicable_range", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6 and §12.3.2", "qualification": "Combined peatland/coastal restoration range (0.5–2.1 in §12.3.2) cannot be assigned to new peat alone; includes different benefits.", "control_mapping": null }, "assumptions": [ { "constraint_id": "recovery", "name": "How much peatland becomes a sink?", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Peatlands and Organic Soils; reference calculation and resource case", "primary": true }, { "constraint_id": "uptake", "name": "New peat accumulation", "description": "New accumulation on 51 million hectares; avoided oxidation is separate.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 3, "step": 0.1, "control_type": "continuous", "default_practical_scenario": 1.5, "default_physical_limit": 3, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Peatlands and Organic Soils; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after deductions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Peatlands and Organic Soils; reference calculation and resource case", "primary": true } ], "calculation": "0.051 billion ha × 50% × 1.5 tCO2/ha/yr × 80%", "overlaps": [ "land", "water", "retention" ], "issues": [ "Combined peatland/coastal restoration range (0.5–2.1 in §12.3.2) cannot be assigned to new peat alone; includes different benefits." ], "status": "review_requested" }, { "method": "grass", "book_location": "Part II · Grasslands and Savannas", "book_practical_scenario": 0.5760000000000001, "book_physical_limit": 3.2, "ipcc": { "lower": 0.2, "upper": 2.6, "midpoint": 1.4000000000000001, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-7/", "location": "§7.4.3.1", "category": "Grassland soil carbon management", "qualification": "Technical potential, medium confidence; separate from cropland soil.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 1.4000000000000001 }, "assumptions": [ { "constraint_id": "eligible", "name": "How much grassland can improve?", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 40, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Grasslands and Savannas; reference calculation and resource case", "primary": true }, { "constraint_id": "uptake", "name": "Annual soil-carbon gain", "description": "Annual gain on the 3.2-billion-hectare grassland resource.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 1, "step": 0.05, "control_type": "continuous", "default_practical_scenario": 0.6, "default_physical_limit": 1, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Grasslands and Savannas; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after deductions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 75, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Grasslands and Savannas; reference calculation and resource case", "primary": true } ], "calculation": "3.2 billion ha × 40% × 0.6 tCO2/ha/yr × 75%", "overlaps": [ "land", "water", "retention" ], "issues": [], "status": "aligned_range_not_identical_scope" }, { "method": "biochar", "book_location": "Part II · Biochar", "book_practical_scenario": 0.7480000000000001, "book_physical_limit": 3.1166667, "ipcc": { "lower": 0.2, "upper": 6.6, "midpoint": 3.4, "unit": "GtCO₂e/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "§12.3.2", "category": "Biochar", "qualification": "Technical potential in 2050, not a common deployment forecast.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 3.1166667 }, "assumptions": [ { "constraint_id": "biomass", "name": "Biomass available for biochar", "description": "The book allocates 1.5 Gt from a shared 2-Gt budget; its standalone upper case uses 4 Gt.", "unit": "Gt dry matter/yr", "minimum": 0, "maximum": 4, "step": 0.1, "control_type": "continuous", "default_practical_scenario": 1.5, "default_physical_limit": 4, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Biochar; reference calculation and resource case", "primary": true }, { "constraint_id": "retention", "name": "Carbon retained in char", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 50, "step": 5, "control_type": "continuous", "default_practical_scenario": 40, "default_physical_limit": 50, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Biochar; reference calculation and resource case", "primary": true }, { "constraint_id": "durability", "name": "Char remaining in durable storage", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 85, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 85, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Biochar; reference calculation and resource case", "primary": true }, { "constraint_id": "carbon", "name": "Carbon in dry biomass", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 50, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": 50, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Biochar; reference calculation and resource case", "primary": false }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 85, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part II · Biochar; reference calculation and resource case", "primary": false } ], "calculation": "1.5 Gt dry matter × 50% carbon × 40% char retention × 80% durability × (44/12) × 85%", "overlaps": [ "biomass", "land", "energy" ], "issues": [ "Book Physical Limit is below IPCC upper bound; the resource definitions differ.", "IPCC midpoint exceeds book ceiling. Preset result is explicitly capped; the unaltered midpoint remains a reference marker." ], "status": "review_requested" }, { "method": "coast", "book_location": "Part III · Coastal Blue Carbon", "book_practical_scenario": 0.01745, "book_physical_limit": 0.26, "ipcc": { "lower": null, "upper": null, "midpoint": null, "unit": "GtCO₂/yr", "status": "no_applicable_range", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6 and §12.3.2", "qualification": "Table 12.6 gives only <1, not a two-sided range; the combined wetland category cannot be allocated to coasts alone.", "control_mapping": null }, "assumptions": [ { "constraint_id": "mangrove_share", "name": "Mangrove area that can be restored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 30, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "marsh_share", "name": "Salt marsh area that can be restored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "seagrass_share", "name": "Seagrass area that can be restored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 30, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "mangrove_rate", "name": "Mangrove annual uptake", "description": "Book habitat-specific growth rates.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 10, "step": 0.5, "control_type": "continuous", "default_practical_scenario": 6, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "mangrove_success", "name": "Mangrove restoration success", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "marsh_rate", "name": "Salt marsh annual uptake", "description": "Book habitat-specific growth rates.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 8, "step": 0.5, "control_type": "continuous", "default_practical_scenario": 5, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "marsh_success", "name": "Salt marsh restoration success", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "seagrass_rate", "name": "Seagrass annual uptake", "description": "Book habitat-specific growth rates.", "unit": "tCO₂/ha/yr", "minimum": 0, "maximum": 4, "step": 0.5, "control_type": "continuous", "default_practical_scenario": 2, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "seagrass_success", "name": "Seagrass restoration success", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Coastal Blue Carbon; reference calculation and resource case", "primary": false } ], "calculation": "0.009×0.30×6×0.80 + 0.001×0.50×5×0.80 + 0.0083×0.30×2×0.50 (billion ha basis)", "overlaps": [ "coastal-area", "retention" ], "issues": [ "Table 12.6 gives only <1, not a two-sided range; the combined wetland category cannot be allocated to coasts alone." ], "status": "review_requested" }, { "method": "algae", "book_location": "Part III · Macroalgal Carbon", "book_practical_scenario": 0.005568749999999999, "book_physical_limit": 79.2, "ipcc": { "lower": null, "upper": null, "midpoint": null, "unit": "GtCO₂/yr", "status": "no_applicable_range", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6 and §12.3.2", "qualification": "No separate macroalgae range identified in the book’s AR6 WGIII assessment table. National Academies values are not relabelled IPCC.", "control_mapping": null }, "assumptions": [ { "constraint_id": "area", "name": "Area of seaweed farms", "description": "Book technical area is 10 million ha; geometric upper resource is 4.8 billion ha.", "unit": "billion ha", "minimum": 0, "maximum": 4.8, "step": 0.01, "control_type": "continuous", "default_practical_scenario": 0.01, "default_physical_limit": 4.8, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "air", "name": "Carbon replaced from the atmosphere", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 27, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "storage", "name": "Carbon reaching durable storage", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 25, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": true }, { "constraint_id": "yield", "name": "Dry seaweed yield", "description": "The book uses 10 dry tonnes per hectare in its technical case and 15 in its physical resource case.", "unit": "t/ha/yr", "minimum": 0, "maximum": 15, "step": 0.5, "control_type": "continuous", "default_practical_scenario": 10, "default_physical_limit": 15, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "carbon", "name": "Carbon in dry seaweed", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 30, "step": 5, "control_type": "continuous", "default_practical_scenario": 30, "default_physical_limit": 30, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": false }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 75, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Macroalgal Carbon; reference calculation and resource case", "primary": false } ], "calculation": "0.010 billion ha × 10 dry t/ha × 30% carbon × (44/12) × 27% air attribution × 25% storage × 75%", "overlaps": [ "ocean-area", "nutrients", "attribution", "retention" ], "issues": [ "No separate macroalgae range identified in the book’s AR6 WGIII assessment table. National Academies values are not relabelled IPCC." ], "status": "review_requested" }, { "method": "pump", "book_location": "Part III · Ocean Biological Pump", "book_practical_scenario": 0.0176, "book_physical_limit": 36.7, "ipcc": { "lower": 1, "upper": 3, "midpoint": 2.0, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "Ocean fertilisation", "qualification": "Comparator for fertilisation; not every biological-pump intervention.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 2.0 }, "assumptions": [ { "constraint_id": "area", "name": "Area receiving treatment", "description": "Two million square kilometres in the book technical case; no justified area translation for its second-pump upper scenario.", "unit": "million km²", "minimum": 0, "maximum": 2, "step": 0.1, "control_type": "continuous", "default_practical_scenario": 2, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": true }, { "constraint_id": "production", "name": "Extra annual carbon production", "description": "Book increment; no assessed higher intervention range is assumed.", "unit": "gC/m²/yr", "minimum": 0, "maximum": 30, "step": 1, "control_type": "continuous", "default_practical_scenario": 30, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": true }, { "constraint_id": "export", "name": "Production exported from surface water", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": true }, { "constraint_id": "storage", "name": "Export retained at depth", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 40, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": false }, { "constraint_id": "air", "name": "Carbon replaced from the atmosphere", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": false }, { "constraint_id": "delivery", "name": "Net benefit after deductions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Biological Pump; reference calculation and resource case", "primary": false } ], "calculation": "2e12 m2 × 30 gC/m2/yr / 1e15 g/Gt × (44/12) × 50% × 40% × 50% × 80%", "overlaps": [ "ocean-area", "nutrients", "oxygen", "attribution" ], "issues": [ "Book Practical Scenario is outside the assessed range; compare resource and accounting boundaries." ], "status": "review_requested" }, { "method": "alkalinity", "book_location": "Part III · Ocean Dissolved Inorganic Carbon and Alkalinity", "book_practical_scenario": 0.05796226415094341, "book_physical_limit": 12.075471698113208, "ipcc": { "lower": 1, "upper": 100, "midpoint": 50.5, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "Ocean alkalinity enhancement", "qualification": "Broad potential; not limited to the book 10-Gt mineral-throughput case.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 12.075471698113208 }, "assumptions": [ { "constraint_id": "material", "name": "Annual alkaline material supply", "description": "Same Mg(OH)₂-equivalent chemistry as the book annual resource case.", "unit": "Gt Mg(OH)₂/yr", "minimum": 0, "maximum": 10, "step": 0.05, "control_type": "continuous", "default_practical_scenario": 0.1, "default_physical_limit": 10, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Dissolved Inorganic Carbon and Alkalinity; reference calculation and resource case", "primary": true }, { "constraint_id": "reaction", "name": "Alkalinity successfully delivered", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Dissolved Inorganic Carbon and Alkalinity; reference calculation and resource case", "primary": true }, { "constraint_id": "air", "name": "Atmospheric equilibration achieved", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Dissolved Inorganic Carbon and Alkalinity; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 75, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Ocean Dissolved Inorganic Carbon and Alkalinity; reference calculation and resource case", "primary": false } ], "calculation": "0.1 Gt Mg(OH)2 / 0.0583 kg/mol × 2 eq/mol × 0.8 molCO2/eq × 0.044 kg/mol × 80% × 80% × 75%", "overlaps": [ "minerals", "energy", "ocean-area", "attribution" ], "issues": [ "Book Practical Scenario is outside the assessed range; compare resource and accounting boundaries.", "Book Physical Limit is below IPCC upper bound; the resource definitions differ.", "IPCC midpoint exceeds book ceiling. Preset result is explicitly capped; the unaltered midpoint remains a reference marker." ], "status": "review_requested" }, { "method": "doc", "book_location": "Part III · Direct Ocean Carbon Removal", "book_practical_scenario": 0.007645837499999998, "book_physical_limit": 16.2, "ipcc": { "lower": null, "upper": null, "midpoint": null, "unit": "GtCO₂/yr", "status": "no_applicable_range", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6 and §12.3.2", "qualification": "No separate extraction-only range identified in the book’s AR6 WGIII table; electrochemical alkalinity is not direct extraction.", "control_mapping": null }, "assumptions": [ { "constraint_id": "water", "name": "Seawater processed each day", "description": "Book technical throughput. The ocean-layer ceiling is a separate resource scenario, not a deployable pump range.", "unit": "billion m³/day", "minimum": 0, "maximum": 1, "step": 0.05, "control_type": "continuous", "default_practical_scenario": 1, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Direct Ocean Carbon Removal; reference calculation and resource case", "primary": true }, { "constraint_id": "refill", "name": "Carbon replaced from the atmosphere", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 70, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Direct Ocean Carbon Removal; reference calculation and resource case", "primary": true }, { "constraint_id": "storage", "name": "Captured carbon safely stored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 95, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Direct Ocean Carbon Removal; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 70, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part III · Direct Ocean Carbon Removal; reference calculation and resource case", "primary": false } ], "calculation": "365e9 m3/yr × 0.045 kgCO2/m3 / 1e12 kg/Gt × 95% storage × 70% refill × 70%", "overlaps": [ "energy", "geological-storage", "seawater-flow", "attribution" ], "issues": [ "No separate extraction-only range identified in the book’s AR6 WGIII table; electrochemical alkalinity is not direct extraction." ], "status": "review_requested" }, { "method": "beccs", "book_location": "Part IV · Bioenergy with Carbon Capture and Storage", "book_practical_scenario": 0.53295, "book_physical_limit": 206.8, "ipcc": { "lower": 0.5, "upper": 11, "midpoint": 5.75, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "BECCS", "qualification": "Table range; §12.3.2 gives 0.5–11.3. This rounded table comparator excludes avoided fossil substitution.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 5.75 }, "assumptions": [ { "constraint_id": "biomass", "name": "Biomass available for BECCS", "description": "The book reserves 0.5 Gt from the shared sustainable biomass budget; its biosphere upper scenario has a different boundary.", "unit": "Gt dry matter/yr", "minimum": 0, "maximum": 0.5, "step": 0.025, "control_type": "continuous", "default_practical_scenario": 0.5, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "capture", "name": "CO₂ captured at the plant", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 90, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "additionality", "name": "Benefit beyond the no-harvest baseline", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "carbon", "name": "Carbon in dry biomass", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 50, "step": 5, "control_type": "continuous", "default_practical_scenario": 50, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": false }, { "constraint_id": "storage", "name": "Captured carbon safely stored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 95, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": false }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 85, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Bioenergy with Carbon Capture and Storage; reference calculation and resource case", "primary": false } ], "calculation": "0.5 Gt dry matter × 50% carbon × (44/12) × 90% capture × 95% storage × 80% additionality × 85%", "overlaps": [ "biomass", "land", "energy", "geological-storage" ], "issues": [], "status": "aligned_range_not_identical_scope" }, { "method": "dac", "book_location": "Part IV · Direct Air Capture and Storage", "book_practical_scenario": 0.201875, "book_physical_limit": 230.15873, "ipcc": { "lower": 5, "upper": 40, "midpoint": 22.5, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "DACCS", "qualification": "Technical potential with energy and cost limitations; not current capacity.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 22.5 }, "assumptions": [ { "constraint_id": "electricity", "name": "Clean electricity for capture", "description": "Technical case: 200 TWh; book thermodynamic upper case appropriates 29,000 TWh.", "unit": "TWh/yr", "minimum": 0, "maximum": 29000, "step": 50, "control_type": "continuous", "default_practical_scenario": 200, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Direct Air Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "heat", "name": "Useful low-carbon heat", "description": "Technical case heat supply; no higher independent book heat resource is specified.", "unit": "TWh/yr", "minimum": 0, "maximum": 300, "step": 25, "control_type": "continuous", "default_practical_scenario": 300, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Direct Air Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "storage", "name": "Captured carbon safely stored", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 95, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Direct Air Capture and Storage; reference calculation and resource case", "primary": true }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 85, "default_physical_limit": null, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Direct Air Capture and Storage; reference calculation and resource case", "primary": false } ], "calculation": "min(200 TWh/0.8 MWh/t, 300 TWh/1.2 MWh/t) / 1000 × 95% × 85%", "overlaps": [ "energy", "geological-storage" ], "issues": [ "Book Practical Scenario is outside the assessed range; compare resource and accounting boundaries." ], "status": "review_requested" }, { "method": "weather", "book_location": "Part IV · Enhanced Weathering", "book_practical_scenario": 0.20807999999999996, "book_physical_limit": 24, "ipcc": { "lower": 2, "upper": 4, "midpoint": 3.0, "unit": "GtCO₂/yr", "source_report": "IPCC AR6 WGIII (2022)", "source_url": "https://www.ipcc.ch/report/ar6/wg3/chapter/chapter-12/", "location": "Table 12.6", "category": "Enhanced weathering", "qualification": "Author-judgement range; full literature range <1–95 is not used for the midpoint.", "status": "verified_range", "midpoint_definition": "Arithmetic midpoint (lower + upper)/2; not an IPCC mean", "control_mapping": "No unique IPCC parameter settings; assessment-reference mode preserves the book assumptions.", "verified_date": "2026-10-07", "applied_preset_value": 3.0 }, "assumptions": [ { "constraint_id": "area", "name": "Cropland receiving rock", "description": "Technical case: 150 million hectares. Upper case: all 1.6 billion hectares.", "unit": "billion ha", "minimum": 0, "maximum": 1.6, "step": 0.05, "control_type": "continuous", "default_practical_scenario": 0.15, "default_physical_limit": 1.6, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": true }, { "constraint_id": "dose", "name": "Rock spread each year", "description": "Annual basalt supply per hectare.", "unit": "t/ha/yr", "minimum": 0, "maximum": 50, "step": 1, "control_type": "continuous", "default_practical_scenario": 20, "default_physical_limit": 50, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": true }, { "constraint_id": "weathered", "name": "Rock reacting within the credit period", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 40, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": true }, { "constraint_id": "air", "name": "Atmospheric-carbon attribution", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 80, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": false }, { "constraint_id": "storage", "name": "Carbon reaching durable storage", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 85, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": false }, { "constraint_id": "delivery", "name": "Net benefit after lifecycle emissions", "description": "Share retained at this stage of the book calculation.", "unit": "%", "minimum": 0, "maximum": 100, "step": 5, "control_type": "continuous", "default_practical_scenario": 85, "default_physical_limit": 100, "default_ipcc": null, "calculation_role": "Multiplicative factor in the stated book equation", "confidence": "Book scenario assumption; not a probability interval", "notes": "The control explores values from zero to the stated book resource/performance endpoint. This is an exploration interval, not a literature-assessed confidence range.", "source": "Counting Carbon v13", "uncertainty": "Site performance and feasible global deployment remain uncertain.", "source_page_or_chapter": "Part IV · Enhanced Weathering; reference calculation and resource case", "primary": false } ], "calculation": "0.15 billion ha × 20 t rock/ha/yr × 0.30 tCO2/t × 40% × 80% × 85% × 85%", "overlaps": [ "land", "minerals", "energy" ], "issues": [ "Book Practical Scenario is outside the assessed range; compare resource and accounting boundaries." ], "status": "review_requested" } ]