Annual sea ice. An air-sea gas exchange moderator

• Main Authors: Gosink, T.A., Kelley, J.J.
• Language: unknown
• Published: 2013
• Subjects: 54 ENVIRONMENTAL SCIENCES; ARCTIC REGIONS; ICE; CARBON DIOXIDE; AIR-WATER INTERACTIONS; RESPONSE MODIFYING FACTORS; BRINES; MASS TRANSFER; PERMEABILITY; SEAWATER; TEMPERATURE DEPENDENCE; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; HYDROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLAR REGIONS; WATER; Arctic; Sea ice
• Online Access: http://www.osti.gov/servlets/purl/5250614; https://www.osti.gov/biblio/5250614; https://doi.org/10.2172/5250614

Arctic annual sea ice, particularly when it is relatively warm (> -15/sup 0/C) permits significant gas exchange between the sea and air throughout the entire year. Sea ice, particularly annual sea ice, differs from freshwater ice with respect to its permeability to gases. The presence of brine allows for significant air-sea-ice exchange of CO/sub 2/ throughout the winter, which may significantly affect the global carbon dioxide balance. Other trace gases are also noted to be enriched in sea ice, but less is known about their importance to air-sea-interactions at this time. Both physical and biological factors cause and modify evolution of gases from the surface of sea ice. Quantitative and qualitative descriptions of the nature and physical behavior of sea ice with respect to brine and gases are discussed.