1. SRON Netherlands Institute for Space Research, Leiden 3584 CA, Netherlands
2. Environmental Defense Fund, Washington, District of Columbia 20009, United States
3. Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politécnica de Valéncia (UPV), Valencia 46022, Spain
4. International Methane Emission Observatory, United Nations Environment Program, Paris 75015, France
5. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91011, United States
6. GHGSat Inc., Montréal H2W 1Y5, Canada