CAGE conducts cross-disciplinary research in the Arctic Ocean deploying observatories as well as conducting expeditions by sea and air to collect data on methane release from the ocean ? oor.Illustration: Torger Grytå/CAGErapped beneath permafrost and they are shallow biogenic or deep ther- the gas compositions and the concentra-ocean sediments, the release of mogenic sources.” tion of methane above those gas hydrate Tthe world’s largest natural gas “When the methane reaches the upper