This data is collected through the CDP-ICLEI Unified Reporting System. When using this data, please cite both organisations using the following wording: ‘This data was collected in partnership by CDP and ICLEI - Local Governments for Sustainability’. This dataset contains public data on total city-wide emissions as disclosed by cities in 2020. For a full breakdown of cities' emissions by sector and scope, please see the 2020 Full Cities Dataset in Open Data Portal > Governance. To view the complete cities 2020 questionnaire guidance, including all questions asked in 2020, visit https://www.cdp.net/en/guidance/guidance-for-cities. Please contact cities@cdp.net if you have any questions. When using the inventory data for aggregation, comparison and trend analysis, please note that the inventory data is based on non-verified self-reported city inputs. The reported inventory may not include all emission sources within the city boundary.