R/V Mirai Cruise MR14-05

Arctic cyclones are very influential phenomenon for weather forecasts, sea-ice decrease, and vertical and horizontal oceanic/biochemistry structure. To understand the role of Arctic cyclones for the Arctic climate system, this cruise focused on a) Obtaining the upper sounding data over ice-free ocean and their application for predictability studies, b) Detection of a part of seasonal cycle of air-sea coupled system under diminished sea-ice condition, c) The impact of atmospheric disturbances on the ocean structure and biochemical cycles.
Here, we conducted a stationary point observation at 74.75N 162W with radiosonde, ozonesonde, HYVIS, Doppler radar, Lidar, atmospheric turbulent measurement, general meteorological equipment, CTD (Conductivity, temperature, and depth sensors), XCTD (expendable CTD), seawater samplers, current profilers, turbulence ocean microstructure acquisition profile, sea surface monitoring system, drifting buoys, core sampling, and so on.
Continuous observations were also done along the cruise track (sea bottom topography, gravity, and magnetic fields in addition to the meteorological and oceanographic observations by using general meteorological equipment and sea surface monitoring system, etc.)