COP27 Global Stocktake Climate Datathon

Build the future of climate data

The Global Stocktake Climate Datathon is a call to develop open data and tools to support the GST ahead of COP27.

Help us build the climate data infrastructure for the Global Stocktake

The Global Stocktake for the Paris Agreement will take place next year, which will measure our collective progress towards the commitments made in the Paris Climate Agreement. We seek to support this process by asking you help by taking part in this effort to make sense of progress the world is making towards our climate goals. By analyzing and visualizing data, making it interoperable, and developing support tools, we can collectively take stock of the global climate.

Announcing the Datathon Winners

Learn about who participated, what we accomplished, and the road to COP.

About the Datathon

The Structure
Participants will have roughly three weeks to tackle a prompt - using data our partners provide or through data they find themselves. The tasks can be as simple as cleaning and wrangling a dataset - the first step to making it interoperable - or more advanced, like designing interactive visualizations or conducting statistical analyses.
The Task
How close are we to meeting our emissions reduction goals? This question and other prompts will get you started in thinking about how data can be used to answer questions relevant to contribute to our understanding of collective progress towards the Paris Agreement. Have your own burning question you'd like to answer? No problem - we've got an Open Prompt category just for you.

What do we expect

Participants can explore prompts we've invited climate organizations and experts to contribute in three categories: mitigation, adaptation, and implementation and support. Does no prompt strike your fancy? No sweat - the Open Prompt category allows you to explore your creativity.
Help datasets talk to one another to provide aggregated insights on collective progress
Conduct analyses on existing actor data to identify trends and new findings
Help to visualize our collective progress toward the Paris Agreement
Contribute to data storytelling and narration
Other data innovation


What is a prompt?
A prompt will consist of an open dataset or a call for data surrounding a guided question or topic related to the Global Stocktake. A prompt will also include background information on the issue, challenges and opportunities with the data, and a technical appendix.
Not sure how to get started?
For more information on the GST and its challenges, some initial guiding questions, and some general open-source datasets, check out the starter document below.
Explores questions related to our ability to reduce climate-warming emissions.
Owner: Data-Driven Envirolab (DDL)
Net-Zero CO2eq and GHG Targets
How can analysis and visualization of publicly available data be used to further map the ambition of current net-zero CO2eq or GHG non-state actor targets/commitments?
Owner: World Resources Institute (WRI), ClimateWorks Foundation, McGill University
Mapping the Climate Data Platform Space
Currently there is no comprehensive, public overview of existing climate data platforms that allows experts and non-experts alike to know what type of climate data exists and is available for analysis
Owner: Climate TRACE
Filling gaps in global landfill datasets
Can current global landfill datasets be improved on by incorporating information from other sources such as government websites, municipal websites, non-English websites, or even newspapers?
Owner: Climate Equity Reference Project (CERP); Carleton University
Open, Transparent, Accessible, and Flexible NDC Mitigation Quantification
The main challenge is to create a “Open, Transparent, Accessible, and Flexible NDC Mitigation Quantification” tool that, based on input data sets of relevant socio economic (GDP, population) and emissions data (disaggregated by sectors and gases) and the relevant utterances about...
Adaptation & Resilience
Explores questions related to our ability to adapt to climate impacts and build future resilience.
Owner: Global Covenant of Mayors for Climate & Energy (GCoM)
Data for city climate mitigation inventories and adaptation assessments
What are the third-party datasets that can improve the quantity and quality of city-level data togenerate ‘good enough’ GHG emissions inventories and/or climate risk and vulnerability assessments -and how can we integrate them?
Owner: Speed and Scale
Ocean Resilience
How can we utilize and visualize publicly available datasets to stimulate action that will result in the prevention of damage to both coastal and deep-sea ecosystems?
Owner: SDG Assessment
Sustainability assurance framework for SME greenhouse gas emissions data
How could the GST provide a sustainability assurance framework to assure the quality of SME greenhouse gas emissions data?
Owner: West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL)
Using primary climate data to enhance the resilience of communities
First, there are some data gaps, and we ask participants to contribute to cleaning and processing the data while helping to understand where the data gaps are. Secondly, as the stations are scattered across the sites, we want to know what other...
Means of Implementation & Support
Explores datasets related to financing, capacity building, and knowledge sharing.
Owner: Radboud University; German Development Institute
Actor Analysis
We see a high number of instances of participation by a multiplicity of actors. However, we have not yet determined to what extent these instances overlap -- for instance one actor taking part in multiple ICI's. Can we visualize (e.g. through SNA):
How many actors relate to multiple initiatives;
Whether there are trends and patterns in e.g. collaborations between certain actors or types of actors?...
Owner: Mark Roelfsema, Utrecht University
Carbon trading
Construct and visualize historical data from before 2021, and projected emissions in the period 2021-2030 per EU Member State (and additional countries), sector (electricity vs industry, and industry sectors in more detail) or groups of large companies. In addition, add the remaining emissions that need to be decreased by other EU policy instruments. Using geographical maps is a plus.
General prompts
Explores datasets and challenges related to GST data collection and harmonization across all thematic areas.
Owner: CAD2.0
Digitally-Enabled Independent Global Stocktake (DIGS)
In this prompt, we ask teams to develop approaches using emerging and web3 technologies for improving data quality, interoperability, and transparency for climate accounting.
Owner: Data-Driven Envirolab (DDL)
ClimActor and entity harmonization of climate actors
How can a more automated and efficient entity matching algorithm be implemented for entity matching of climate data?
Owner: OpenEarth Foundation
Climate accounting harmonization
In this prompt, the challenge is to discover GHG emissions datasets and convert them to the OpenClimate data format. The OpenClimate schema supports emissions accounting for public entities like nation-states, sub-national divisions like states and provinces, and cities. It can also support reporting data for private sector organizations, down to physical sites like factories...


All submissions will be scored by a panel of judges and the best projects will be awarded a cash prize and the opportunity to present their work at COP 27 in November.
Call for data
Do you have data you'd like to contribute? Fill out the form and tell us about your world-changing data. We'll keep a repository of open datasets for participants to reference or use in their submissions.
More information


September 21st @ 9:00-9:30 AM ET | Launch Datathon @ NY Climate Week
October 15th | Submissions closed
October 15th-20th | Submissions reviewed
October 21st | Winners identified and announced
November 10th @ COP27 | Winners will present on Science Day


We ask for available data to be provided that could support the Global Stocktake

Judging Criteria

Submissions will be evaluated by a panel of climate data experts based on quality, clarity, credibility, and potential impact.

If your project includes code, please include the code in your submission and ensure that it is replicable.

If your project does not include some sort of visualization, please create a slide deck or write a brief explanation of how your project addresses the prompt.

Join the Discord

Connect with other hackers, join a team, ask questions of the prompt owners and event hosts, and stay in touch with this awesome community!


Do I have to submit a contribution to the datathon under a prompt?
What is the goal of the datathon?
What if I don’t know where to start?
What is a prompt?
What do we expect participants in the datathon to do?
How do I sign up?
How many people can I have on my team?
When are final submissions due? Can I continue to update my Github repository/submission after the due date?
What if I have questions?
How will I know if my team and I have won?
The Climate Datathon is supported by the William and Flora Hewlett Foundation
Contact Us
If you have any questions about the Datathon or would like to get involved, email