CO2M-B, also known as Sentinel-7B is a future European Earth observation satellite within the EU's Copernicus programme, expected to launch in 2028. Its goal is to provide global measurements of anthropogenic emissions of CO<sub>2</sub>, CH<sub>4</sub>, and NO<sub>2</sub> to support fulfilling the Paris Agreement. Like its sister spacecraft CO2M-A (Sentinel-7A), it will be equipped with an infrared spectrometer, a multi-angle polarimeter, and a cloud imager.