danielrosehill
commited on
Commit
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2dfed26
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Parent(s):
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updated
Browse files- .vscode/settings.json +3 -0
- README.md +1 -1
- data-dictionary.md +66 -0
- glossary.md +94 -0
- proposals.csv +2 -0
- units-glossary.md +65 -0
.vscode/settings.json
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{
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"window.title": "${dirty}${activeEditorShort}${separator}${rootName}${separator}${profileName}${separator}${appName}${separator}[Branch: main]"
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}
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README.md
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#
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#
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data-dictionary.md
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## Comments
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Any additional remarks or notes about the proposal.
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## Climate Model Used
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The climate model(s) used in deriving the SCC (e.g., DICE, FUND, PAGE).
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## Currency
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The currency in which the SCC value is denominated (e.g., USD, GBP).
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## Damage Categories Included
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A list of damage categories factored into the calculation (e.g., health impacts, agricultural losses, property damages).
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## Discount Rate
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The discount rate(s) used in the calculation of the SCC (e.g., 3%, 2%, 1%).
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## Economic Model Used
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The economic model(s) or framework applied in calculating costs.
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## Equity Weighting
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Whether equity weighting was applied to account for distributional impacts across regions or populations.
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## Geographic Scope
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The geographic region or scope for which the SCC applies (e.g., global, national, state-level).
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## Inflation Adjustment Year
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The base year for inflation adjustment if values are adjusted for inflation.
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## Methodology
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A brief description of the methodology used to calculate the SCC (e.g., integrated assessment model, empirically derived estimate).
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## Policy Context
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The policy application or context for which the SCC was intended (e.g., regulatory impact analysis, carbon tax setting).
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## Proposal Name
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Name or identifier of the social cost of carbon proposal.
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## Proposal Year
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The year the SCC estimate was proposed or published.
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## Range High
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If applicable, the upper bound of a range provided for the SCC estimate.
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## Range Low
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If applicable, the lower bound of a range provided for the SCC estimate.
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## Range Average
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If the social cost of carbon is stated as a range, then the mathematical average is also provided.
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## Source Document
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The name of the report or publication where the estimate is documented.
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## Source Organization
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The organization or entity responsible for producing the SCC estimate (e.g., EPA, Interagency Working Group, New York DEC).
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## Time Horizon
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The time period over which the damages are calculated (e.g., 100 years, indefinite).
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## Uncertainty Notes
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Notes on uncertainties associated with the estimate (e.g., climate sensitivity, economic assumptions).
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## Value
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The numerical value of the SCC estimate.
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## Value Units
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The units in which the SCC is expressed (e.g., $/ton CO2, £/ton C).
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glossary.md
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# Acronym Glossary For Social Cost Of Carbon Proposals
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### Glossary for Social Cost of Carbon Reporting (Alphabetical Order)
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This glossary provides key terms, acronyms, and formulas commonly used in the context of social cost of carbon (SCC) reporting and climate economics.
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---
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#### **Carbon Dioxide (CO₂)**
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- **Definition**: A greenhouse gas that is a primary driver of global warming. It is emitted through activities such as burning fossil fuels, deforestation, and industrial processes.
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- **Units**: Measured in tonnes (metric tons).
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---
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#### **Carbon Dioxide Equivalent (CO₂e)**
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- **Definition**: A standard unit for measuring the global warming potential (GWP) of greenhouse gases relative to CO₂. It allows for comparison across different gases by converting them into an equivalent amount of CO₂ based on their GWP.
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- **Formula**:
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$$
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CO₂e = \text{Mass of Gas} \times \text{GWP of Gas}
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$$
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- **Units**: Measured in tonnes or millions of tonnes (MtCO₂e).
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---
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#### **Discount Rate**
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- **Definition**: A percentage used to calculate the present value of future costs and benefits. In SCC calculations, it reflects how much weight is placed on future climate damages compared to immediate costs.
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- **Formula**:
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$$
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PV = \frac{FV}{(1 + r)^t}
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$$
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Where:
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- $$ PV $$: Present value
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- $$ FV $$: Future value
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- $$ r $$: Discount rate
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- $$ t $$: Time in years
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---
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#### **Global Warming Potential (GWP)**
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- **Definition**: A measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period (usually 100 years), relative to CO₂. For example, methane (CH₄) has a GWP of about 25, meaning it is 25 times more potent than CO₂ over the same period.
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---
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#### **Greenhouse Gases (GHGs)**
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- **Definition**: Gases that trap heat in the Earth's atmosphere and contribute to global warming. Common GHGs include:
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- Carbon dioxide (CO₂)
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- Methane (CH₄)
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- Nitrous oxide (N₂O)
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- Fluorinated gases (e.g., HFCs, PFCs)
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---
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#### **Marginal Abatement Cost (MAC)**
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- **Definition**: The cost of reducing one additional unit of greenhouse gas emissions. It is often used in cost-benefit analyses to compare mitigation strategies.
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---
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#### **Millions of Tonnes of Carbon Dioxide Equivalent (MtCO₂e)**
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- **Definition**: A unit representing one million metric tons of CO₂ or its equivalent. It is commonly used for large-scale emissions reporting.
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---
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#### **Net Present Value (NPV)**
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- **Definition**: The difference between the present value of benefits and costs over time. In SCC reporting, NPV helps evaluate the economic efficiency of climate policies.
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- **Formula**:
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$$
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NPV = \sum_{t=0}^{T} \frac{B_t - C_t}{(1 + r)^t}
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$$
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Where:
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- $$ B_t $$: Benefits in year $$ t $$
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- $$ C_t $$: Costs in year $$ t $$
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- $$ r $$: Discount rate
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- $$ T $$: Time horizon
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---
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#### **Social Cost of Carbon (SCC)**
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- **Definition**: The monetary estimate of the economic damages associated with emitting one additional tonne of CO₂ or its equivalent into the atmosphere. It accounts for impacts such as reduced agricultural productivity, health effects, and property damage from extreme weather.
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- **Formula**:
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$$
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SCC = \frac{\partial W}{\partial C} \cdot \Delta E
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$$
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Where:
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- $$ W $$: Economic welfare
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- $$ C $$: Consumption
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- $$ \Delta E $$: Incremental emissions
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- **Units**: Typically expressed as dollars per tonne (\$/tCO₂).
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---
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#### **Tonnes of Carbon Dioxide Equivalent (tCO₂e)**
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- **Definition**: A unit measuring the emissions or reductions of greenhouse gases expressed as an equivalent amount of CO₂ based on their global warming potential.
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proposals.csv
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proposal_name,proposal_year,value,ghg_unit,ghg_unit_description,reporting_unit,unit_spec,currency_unit,currency_iso,geographical_scope,methodology,source_organization,source_document,climate_model_used,damage_categories_included,policy_context,range_low,range_high,comments
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IFVI Rate,2024,236,tco2e,tonnes of carbon dioxide equivalents,tonnes,carbon dioxide equivalents,,,,,,,,,,,,
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units-glossary.md
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### Glossary of Units for Carbon Dioxide Emissions Reporting
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#### **Grams of Carbon Dioxide Equivalent (gCO₂e)**
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- **Definition**: A small-scale unit used to measure greenhouse gas emissions, often applied to individual products, activities, or small systems.
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- **Example Use**: Emissions per kilometer traveled by a car.
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- **Conversion**: $$ 1 \, \text{gCO₂e} = 0.000001 \, \text{tCO₂e} $$.
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---
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#### **Kilograms of Carbon Dioxide Equivalent (kgCO₂e)**
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- **Definition**: A mid-scale unit often used for household-level emissions or specific activities like energy use or waste generation.
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- **Example Use**: Emissions from heating a home for one day.
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- **Conversion**: $$ 1 \, \text{kgCO₂e} = 0.001 \, \text{tCO₂e} $$.
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---
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#### **Tonnes of Carbon Dioxide Equivalent (tCO₂e)**
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- **Definition**: A standard unit for measuring greenhouse gas emissions on a larger scale, such as for businesses, projects, or small regions.
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- **Example Use**: Annual emissions of a single car or the carbon footprint of an average household.
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- **Conversion**: $$ 1 \, \text{tCO₂e} = 1,000 \, \text{kgCO₂e} $$.
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---
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#### **Kilotonnes of Carbon Dioxide Equivalent (ktCO₂e)**
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- **Definition**: A larger unit used to report emissions from industrial facilities, cities, or sectors like transportation or energy production.
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- **Example Use**: Annual emissions from a medium-sized power plant.
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- **Conversion**: $$ 1 \, \text{ktCO₂e} = 1,000 \, \text{tCO₂e} = 1,000,000 \, \text{kgCO₂e} $$.
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---
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#### **Millions of Tonnes of Carbon Dioxide Equivalent (MtCO₂e)**
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- **Definition**: A very large unit used to express national or global greenhouse gas emissions or reductions.
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- **Example Use**: Total annual emissions of a country or the impact of a large-scale climate policy.
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- **Conversion**: $$ 1 \, \text{MtCO₂e} = 1,000,000 \, \text{tCO₂e} = 1,000 \, \text{ktCO₂e} $$.
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---
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#### **Gigatonnes of Carbon Dioxide Equivalent (GtCO₂e)**
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- **Definition**: The largest commonly used unit for global-scale reporting of greenhouse gas emissions and targets.
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- **Example Use**: Total global annual emissions or cumulative reductions needed to meet international climate goals (like limiting warming to 1.5°C).
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- **Conversion**: $$ 1 \, \text{GtCO₂e} = 1,000 MtCO₂e = 1,000,000 ktCO₂e = 1,000,000,000 tCO₂e $$.
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---
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#### **Carbon Dioxide Equivalent (CO₂e)**
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- **Definition**: A metric that expresses the impact of all greenhouse gases in terms of the equivalent amount of CO₂ that would produce the same global warming effect. It is calculated using the global warming potential (GWP) of each gas relative to CO₂.
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- **Formula**:
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$$
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CO₂e = (\text{Mass of Gas}) \times (\text{GWP of Gas})
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$$
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---
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### Summary Table
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| Unit | Abbreviation | Scale | Conversion to tCO₂e | Example Use Case |
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|--------------|--------------|---------------------|---------------------------|----------------------------------------------|
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| Grams | gCO₂e | Small-scale | $$ 0.000001\,\text{tCO₂e} $$ | Emissions per km driven by a car |
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| Kilograms | kgCO₂e | Household-level | $$ 0.001\,\text{tCO₂e} $$ | Daily household energy use |
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| Tonnes | tCO₂e | Standard unit | $$ 1\,\text{tCO₂e} $$ | Annual footprint of an average household |
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| Kilotonnes | ktCO₂e | Industrial-level | $$ 1,000\,\text{tCO₂e} $$ | Emissions from a power plant |
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| Millions | MtCO₂e | National-level | $$ 1,000,000\,\text{tCO₂e} $$ | Total annual emissions of a country |
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| Gigatonnes | GtCO₂e | Global-scale | $$ 1,000,000,000\,\text{tCO₂e} $$ | Global annual emissions |
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This glossary focuses on units relevant to carbon dioxide and greenhouse gas reporting and provides essential context for understanding their applications across different scales.
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