Ebullition-Driven Fluxes of Methane from Shallow Hot Spots in the East Siberian Arctic Shelf

• Main Authors: Shakhova, Natalia, Semiletov, Igor, Salyuk, Anatoly, Stubbs, Chris, Kosmach, Denis
• Format: Still Image
• Language: English
• Published: 2011
• Subjects: Research Subject Categories::NATURAL SCIENCES::Earth sciences::Atmosphere and hydrosphere sciences::Oceanography; Arctic; Fairbanks; Greenland; Antarc*; Antarctica; Climate change; Cooperative Institute for Arctic Research; International Arctic Research Center; Alaska
• Online Access: http://hdl.handle.net/11122/11001

The maximum concentration of atmospheric methane (CH4) occurs over the Arctic: the value of CH4 over Greenland exceeds that over Antarctica by 8-10%; an absolute maximum is measured during wintertime (Steel et. al., 1987; Fung et. al., 1991). Geologic evidence provides insight into possible climate change effects from a warmer Arctic, suggesting that enhanced Arctic CH4 emissions during warm periods played a key role in past rapid climate change. This work was supported by the International Arctic Research Center of the University Alaska Fairbanks (by the Cooperative Institute for Arctic Research through NOAA Cooperative Agreement NA17RJ1224 and the National Science Foundation Agreement No OPP-0327664), the Russian Foundation for Basic Research (No.04-05-64819) and the Far-Eastern Branch of Russian Academy of Sciences, RAS (Project: Environmental changes in the East-Siberian region).