Global warming will strongly enhance freshwater CH4 emissions through a disproportionate increase in ebullition  by 6-20% per 1°℃ increase in water temperature . It can be expected that ongoing eutrophication enhanced by climate change-related increases in the release of sediment nutrients and the loading of organic carbon and nutrients from catchments will enhance CH4 ebullition on a global scale . The strongest increase in ebullition is expected in shallow waters where sediment temperatures are strongly related to atmospheric temperature . Given that small ponds and shallow lakes are the most abundant freshwater ecosystems globally, these may become hot spots of CH4 ebullition in the future . On average, CH4, CO2 and
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report