Data referring to the CDM (projects and programmes) has been taken from the UNEP DTU CDM project and PoA pipelines as of April 2020. In order to remain conservative, we only include registered activities. We did not assess data quality with regard to whether a project is still active, as UNEP is the commonly recognized database drawing directly on UNFCCC Secretariat data. While there is a high degree of uncertainty with regard to the issuance and upscaling potential of individual activities, these are difficult to assess and will be affected by future political decisions. = 1000 tCO2e) in order not to prejudge the type of certification that post-2020 mitigation outcomes may be using.