Underway fCO2 measurement in the western Arctic Ocean CHINARE2014, 2014

This project continued a successful collaboration between U.S. and Chinese scientists to study the exchange of carbon dioxide between the atmosphere and the surface waters of the Arctic Ocean. It involves the collection of high resolution underway pCO 2 (partial pressure of carbon dioxide) data during the Chinese Arctic Research Expedition (CHINARE) cruise in summer 2014. Together with historical data, the results will be used to constrain the variability of sea surface pCO 2 , air-to-sea CO 2 flux, and their changes over time and to understand the underlying carbon cycling control mechanisms in the western Arctic Ocean. Ancillary data include sea surface temperature (SST), sea surface salinity (SSS), atmospheric pressure. The data processing was following the method described by Pierrot et al. (2009). Here, CO 2 levels in both the surface water and atmosphere are reported as fCO 2 .