Collab Res U.S. GEOTRACES Arctic Section - Water Mass Composition Circulation and Mean Residence Times Derived from Measurements of 18O/D, CFCs, SF6, 3H/3He and 14C

Lead PI: Dr. Yochanan Kushnir

Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)

January 2015 - December 2020
Project Type: Research

DESCRIPTION: In this project, investigators participating in the 2015 U.S. GEOTRACES Arctic expedition will measure six oceanic tracers in order to better understand oceanic water movement in the Arctic Ocean. With this information in-hand, it will be much easier for other investigators to interpret their own seawater chemistry data. In common with other national initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. 


National Science Foundation





Rajasakaren, B., E. Jeansson, A. Olsen, T. Tanhua, T, Johannessen, W.M. Smethie Jr. "Trends in anthropogenic carbon in the Arctic Ocean" Progress in Oceanography , v.178 , 2019