Fjord at Trolltunga, Norway (IMAGE) Southern Cross University Caption Fjords are coastal systems that act similar to the ocean. They take up large amounts of CO2 from the atmosphere. Some fjords emit also N2O and small amounts of CH4. On balance, fjords are a greenhouse gas sink. Credit Dong Zhang on Unsplash Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.