"Melting of the Arctic ice sheets drives the release of the potent greenhouse gas methane from the ocean floor.
"In our study, we expand the geological history of past Arctic methane release to the next to last interglacial, the so-called Eemian period. We have found that the similarities between the events of both Holocene and Eemian deglaciation advocate for a common driver for the episodic release of geological methane—the retreat of ice sheets." says researcher Pierre-Antoine Dessandier, who conducted this study as a postdoctoral fellow at CAGE Centre for Arctic Gas Hydrate Environment and Climate at UiT The Arctic University of Norway."
"Increasing methane emissions are a major contributor to the rising concentration of greenhouse gases in Earth's atmosphere, and are responsible for up to one-third of near-term global heating. During 2019, about 60% (360 million tons) of methane released globally was from human activities, while natural sources contributed about 40% (230 million tons)."
https://phys.org/news/2021-04-methane-rapidly-ice-sheets.html
"Scientists working in one of the world’s fastest-warming places found that rapidly retreating glaciers are triggering the release into the atmosphere of methane, a potent greenhouse gas that causes global temperatures to rise."
“Glaciers are retreating due to climate warming, and they are leaving these exposed forefields behind, which are encouraging methane gas to be released.”
https://www.washingtonpost.com/climate-environment/2023/07/06/arctic-glacier-melt-methane-global-temperatures/