{
  "_meta": {
    "title": "IPCC AR6 GWP-100 Values — GreenCalculus Dataset",
    "description": "Global Warming Potential over 100-year horizon (GWP-100) from IPCC Sixth Assessment Report (AR6). Used by all GreenCalculus calculators to convert non-CO2 gases to CO2 equivalent.",
    "source": "IPCC AR6 Working Group I, Chapter 7, Supplementary Material, Table 7.SM.7",
    "source_url": "https://www.ipcc.ch/assessment-report/ar6/",
    "dataset_version": "2026.1",
    "published": "2026-05-10",
    "license": "MIT",
    "canonical_url": "https://greencalculus.com/data/ipcc-ar6-gwp-values/",
    "notes": "AR6 values supersede AR5. GreenCalculus adopted AR6 from dataset version 2026.1. Biogenic CH4 (GWP 27.9) applies to emissions from managed biological processes; fossil CH4 (GWP 29.8) applies to combustion and fugitive sources."
  },
  "gwp_100": {
    "CO2": {
      "formula": "CO2",
      "name": "Carbon dioxide",
      "gwp_ar6": 1,
      "gwp_ar5": 1,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "CH4_fossil": {
      "formula": "CH4",
      "name": "Methane (fossil)",
      "gwp_ar6": 29.8,
      "gwp_ar5": 25,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7",
      "notes": "Use for natural gas combustion, coal mining fugitives, oil & gas fugitives"
    },
    "CH4_biogenic": {
      "formula": "CH4",
      "name": "Methane (biogenic)",
      "gwp_ar6": 27.9,
      "gwp_ar5": 25,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7",
      "notes": "Use for landfill gas, agricultural emissions, managed biological processes"
    },
    "N2O": {
      "formula": "N2O",
      "name": "Nitrous oxide",
      "gwp_ar6": 273,
      "gwp_ar5": 265,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_23": {
      "formula": "CHF3",
      "name": "HFC-23",
      "gwp_ar6": 14600,
      "gwp_ar5": 12400,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_32": {
      "formula": "CH2F2",
      "name": "HFC-32",
      "gwp_ar6": 771,
      "gwp_ar5": 677,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_125": {
      "formula": "C2HF5",
      "name": "HFC-125",
      "gwp_ar6": 3740,
      "gwp_ar5": 3170,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_134a": {
      "formula": "C2H2F4",
      "name": "HFC-134a",
      "gwp_ar6": 1526,
      "gwp_ar5": 1430,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7",
      "notes": "Common refrigerant; widely used in mobile air conditioning"
    },
    "HFC_143a": {
      "formula": "C2H3F3",
      "name": "HFC-143a",
      "gwp_ar6": 5810,
      "gwp_ar5": 4470,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_152a": {
      "formula": "C2H4F2",
      "name": "HFC-152a",
      "gwp_ar6": 164,
      "gwp_ar5": 124,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_227ea": {
      "formula": "C3HF7",
      "name": "HFC-227ea",
      "gwp_ar6": 3600,
      "gwp_ar5": 3350,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "HFC_245fa": {
      "formula": "C3H3F5",
      "name": "HFC-245fa",
      "gwp_ar6": 962,
      "gwp_ar5": 1030,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "SF6": {
      "formula": "SF6",
      "name": "Sulphur hexafluoride",
      "gwp_ar6": 25200,
      "gwp_ar5": 23500,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7",
      "notes": "Used in electrical switchgear; extremely high GWP"
    },
    "NF3": {
      "formula": "NF3",
      "name": "Nitrogen trifluoride",
      "gwp_ar6": 17400,
      "gwp_ar5": 16100,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7",
      "notes": "Used in semiconductor manufacturing"
    },
    "PFC_14": {
      "formula": "CF4",
      "name": "Perfluoromethane (PFC-14)",
      "gwp_ar6": 7380,
      "gwp_ar5": 6630,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    },
    "PFC_116": {
      "formula": "C2F6",
      "name": "Perfluoroethane (PFC-116)",
      "gwp_ar6": 12400,
      "gwp_ar5": 11100,
      "unit": "kg CO2e per kg gas",
      "source_table": "Table 7.SM.7"
    }
  }
}