Atmospheric Methane concentrations were measured at the Syowa Station in Antarctica by the National Institute of Polar Research (NIPR) and the Japanese Antarctic Research Expedition (JARE).
The purpose of this research was to study the year-to-year variation of the Antarctic atmosphere-sea-ice interaction. The programs consist of satellite data acquisition (NOAA data from 1980 and MOS-1 from 1989), observations of clouds and precipitation, and monitoring of minor atmospheric constituents.
Station 2 : Core 5 originally sampled for Trace Metal (tripled bagged) has been used for the Ice texture by mistake. The Core 4 is the only one cleaned (inner bag rinsed with milli-Q water).
Station 3 : Difficult station due to cold temperatures and thickness of the ice. Two cores froze immediately in the corer, need to come back to the ship to remove them. The POC/PON core is taken ... at a first site, all the other ones are taken a bit further (but very close) after dinner. No brines collected for this station due to the low temperature. After 30 minutes, no brine infiltration.
Station 4 : No major issues (except a crack in the morning leading to stopping the station for 2 hours).
Station 6 : Difficult station due to the ice thickness. Use of the extension on the corer. Cores of ~140-150 cm. No brines nor underlying seawater collected (not enough time for it).
Station 7 : No issues.
Station 8 : No issues. Cores of 90 cm, after that slush and probably some ice under, not possible to catch it.
These data are not yet publicly available.