| # Data Dictionary | |
| This document provides definitions for the data fields and values in the IFVI Value Factors dataset. | |
| ## Value Factor Structure | |
| Each value factor in the dataset follows this general structure: | |
| ```json | |
| { | |
| "Category": "String", // Environmental impact category (e.g., "PM2.5", "SOx") | |
| "Location": "String", // Geographic location (e.g., "Urban", "Rural") | |
| "Impact": "String", // Impact type (e.g., "Primary Health", "Visibility") | |
| "Unit": "String", // Measurement unit (e.g., "/metric ton", "/ha", "/kg") | |
| "ValueFactorKey": "String", // Unique identifier for the value factor | |
| "ValueFactor": Number // Monetary value in USD | |
| } | |
| ``` | |
| ## Categories | |
| The dataset includes the following main categories of environmental impacts: | |
| ### Air Pollution | |
| - **PM2.5**: Particulate matter with diameter less than 2.5 micrometers | |
| - **SOx**: Sulfur oxides | |
| - **NOx**: Nitrogen oxides | |
| - **NH3**: Ammonia | |
| - **VOC**: Volatile organic compounds | |
| ### Land Use and Conversion | |
| - **Agricultural Land Types**: Various types of agricultural land (e.g., "Wheat - conventional", "Oilseeds - conventional") | |
| - **Forestry**: Forest land | |
| - **Urban Land Types**: Various types of urban land (e.g., "Paved", "Built") | |
| ### Waste | |
| - **Hazardous**: Hazardous waste | |
| - **Non-Hazardous**: Non-hazardous waste | |
| ### Water Pollution | |
| - **Water Consumption**: Water usage and pollution impacts | |
| ## Locations | |
| Locations in the dataset can refer to: | |
| - Geographic settings (e.g., "Urban", "Rural", "Peri-Urban") | |
| - Specific usage contexts (e.g., "Transport", "Industry") | |
| - "N/A" for categories where location is not applicable | |
| ## Impacts | |
| Impact types include: | |
| - **Primary Health**: Direct health effects on humans | |
| - **Visibility**: Effects on visibility | |
| - **Lost Ecosystem Services**: Degradation of ecosystem services | |
| - **Leachate**: Contamination from waste leachate | |
| - **Waste Air Pollution**: Air pollution from waste | |
| - **Heavy Metals and Dioxins**: Contamination by heavy metals and dioxins | |
| - **Disamenity**: Reduction in amenity value | |
| - **Waste GHGs**: Greenhouse gas emissions from waste | |
| ## Units | |
| Units in the dataset include: | |
| - **/metric ton**: Per metric ton of emissions (for air pollutants) | |
| - **/ha**: Per hectare (for land use) | |
| - **/kg**: Per kilogram (for waste) | |
| - **/m³**: Per cubic meter (for water) | |
| ## Territories | |
| The dataset covers 268 territories, including: | |
| - Sovereign nations | |
| - Dependencies | |
| - US states (for air pollution data) | |
| ## Value Factor Calculation | |
| Value factors are calculated based on IFVI methodologies that consider: | |
| - Local economic conditions | |
| - Population density | |
| - Environmental sensitivity | |
| - Health impacts | |
| - Ecosystem service valuation | |
| For detailed methodology information, refer to the IFVI documentation at [https://ifvi.org/methodology/environmental-topic-methodology/interim-methodologies/](https://ifvi.org/methodology/environmental-topic-methodology/interim-methodologies/). | |