b'Volume #3 / 2024 51member countries need to stand behind it. The system comes with a hefty price tag: The total global cost esti-mate for the project is $1billion. The aim is to save costs using already existing infrastructures and capa- We need to invest substantially to bilities in the member countries to avoid duplication and enable a rapid path from research to operation.permit every country to engage To be clear, the G3W is not just one systemwe are talking about three, four, five systems spread across thein surface-based observations, world. The figures coming from Europe, China, USA orquality control and assessment, Japan will be reasonably compatible. If all the systems are converging, i.e. saying that emissions are higher orverification and reporting.lower than what is estimated, it will be a very good incentive to look into detail," says Peuch.Dr Gianpaolo Balsamo'