In collaboration with the UN Environment Programme International Methane Emissions Observatory (IMEO), CEOS has developed the database of controlled release experiments. This database aims to be a central point for information about planned and future controlled release experiments, to validate space-based and airborne instruments measuring greenhouse gases. By providing a central place for this information, the goal is to reduce the amount of greenhouse gases intentionally released for validation purposes. All GHG satellite operators are encouraged to sign up to the mailing list, to be notified of planned experiments such that satellites can be tasked appropriately. Organisations who are planning or previously conducted controlled release experiments are invited to fill out the below form with the details.