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.

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 reported by cities in 2019. For a full breakdown of emissions by sector and scope, please refer to the 2019 Full Cities Dataset under the Governance section of the Open Data Portal. Please contact cities@cdp.net if you have any questions.

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 a subset of the related full cities dataset, covering GHG emissions inventory and mitigation action questions for publicly disclosing cities in 2021. The platform is still open and the dataset is updated daily to reflect new submissions.

To view the cities 2021 questionnaire guidance, including all questions asked to cities in 2021, visit https://www.cdp.net/en/guidance/guidance-for-cities.

For any questions, including guidance on how to reference this data in your own work, please contact cities@cdp.net.

Please note that this dataset may contain data from cities or, in some instances, groups of cities at different administrative levels. This includes metropolitan areas, combined authorities, and some regional councils.

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.

This dataset contains data on total city-wide emissions as reported by cities in 2021. To view all responses by cities to questions on emissions in 2021, including breakdowns by sector and scope, go to https://data.cdp.net/Governance/2021-Cities-Emissions-and-Mitigation/aic4-a5fb. The questions covered are 4.6a to 4.6b.

Access cities questionnaire guidance at 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.

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 combines reported emissions and population data with external datasets:
- City Population, from the Geonames database
- Country GDP per capita from the World Bank
- Country emissions per capita from EDGAR

The results from the following data quality checks are displayed:
- Population Check - Comparison between reported populations and figures from the Geonames database
- Emissions Check 1 – A multiple regression model is used to identify statistical outliers (using city population and country GDP per capita)
- Emissions Check 2 - A comparison between city per capita emissions and country per capita emissions.

Field names:
geoid - A unique identifier corresponding to the city's record in the Geonames database
account_id - The CRM organisation ID
org_name - The CRM organisation name
rep.population - The reported population
rep.population.source - The source of the reported population. The population data used is primarily from question 4.5, as this figure corresponds to the year the inventory was taken. If no population is provided in question 4.5, then question 0.5 (current population) is used instead.
geo.population - The city population provided in the Geonames database (used to verify the reported population)
effective.population - After the population check has been carried out, the 'effective population' is defined for use in the subsequent emissions checks. If a city passes the population check, their reported data is used here, otherwise external data is used (i.e. from the Geonames database)
has.inventory - This is the city's response to question 4.0 in the 2019 questionnaire, which asks the city to state whether they have an emissions inventory to report
inventory.type - If the city has an emissions inventory, this field specifies the format that this inventory is provided in
effective.s1.s2.sum - The total scope 1 + scope 2 emissions reported by the city. This is obtained from either question 4.6a or 4.6b, depending on whether the city followed the CRF, or GPC
city.emissions.per.cap - The city's effective.s1.s2.sum is divided by the effective.population to calculate the emissions per capita for that city
country_co2e_per_capita_2012 - This is country level per capita emissions data obtained from: EDGAR’s Global Greenhouse Gas Emissions from 1970 to 2012 (EDGARv4.3.2 dataset). While the data used is from 2012, this is the most recent dataset available which includes all greenhouse gases. More recent datasets are available for CO2 alone, however this is not consistent with the cities' data, which generally includes other GHGs too. Link here: https://edgar.jrc.ec.europa.eu/overview.php?v=CO2andGHG1970-2016&dst=GHGpc
country.GDP.pc.2018 - This is country level GDP per capita in 2018 in US$, obtained from the World Bank. Link here: https://data.worldbank.org/indicator/NY.GDP.PCAP.KD
flag.population - The data quality flag identifying cities whose reported population differs from the external population by +/- 50%
flag.emissions.check1.statistical.outliers - The data quality flag identifying cities whose emissions appear to be anomalously high or low, based on a statistical regression with population and country GDP
flag.emissions.check2.per.capita.country - The data quality flag identifying cities whose per capita emissions differ greatly from the country per capita emissions (a generous theshold of 10x is used, as some variation is expected)

This data was collected in partnership by CDP and ICLEI - Local Governments for Sustainability.

The dataset contains all city-wide emissions reduction targets publicly disclosed in 2018 and 2019.

Please note that the 2018 data on city-wide emissions reduction targets is still in the process of being updated. If you have any questions, please contact cities@cdp.net.

This data was collected in partnership by CDP and ICLEI - Local Governments for Sustainability.

The dataset contains all city-wide emissions reduction targets publicly disclosed in 2018 and 2019

This dataset outlines the city-wide emissions including a breakdown of the gases as well as the overall changes in the emissions reported. Please contact cities@cdp.net for further information on the breakdown of emissions under this protocol and on how to use this data.

This data was collected in partnership by CDP and ICLEI - Local Governments for Sustainability.

This dataset outlines the city-wide emissions including a breakdown of the gases as well as the overall changes in the emissions reported. Please contact cities@cdp.net for further information on the breakdown of emissions under this protocol and on how to use this data.

This dataset contains 2021 data on cities emissions reduction targets, as reported by cities through the CDP-ICLEI Unified Reporting System in response to questions 5.0a-d in the 2021 Cities questionnaire. View the Cities questionnaire at https://www.cdp.net/en/guidance/guidance-for-cities. Please contact cities@cdp.net if you have any questions about the data.

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’.

For further guidance on how to reference this data for use in external publications, please refer to the Open Data Portal Terms of Use available on the homepage.