Arctic Challenge for Sustainability Project

ArCS Blog

ArCS Blog

I joined the Arctic ocean cruise of CCGS Louis S. St-Laurent (Fig.1) from September 6 to October 2. During the cruise, CTD/Rosette observations, zooplankton net tows, XCTD observations, sea ice observations, and recovery and deployment of moorings and ITP buoys were conducted. Our group sampled seawater for chemical analysis such as total alkalinity (TA) and oxygen isotope ratio of seawater (δ18O), and also recovered a remote access sampler (RAS) that had been deployed at mooring A station (75゜N 150゜W).

An observational cruise in the Arctic Ocean will be conducted during October 24 to December 7, 2018 by using an oceanographic research vessel “MIRAI” (Photo 1) owned by Japan Agency for Marine-Earth Science and Technology (JAMSTEC). We visited Sekinehama port on October 22 and 23 to install a continuous observation system and an air sampling system for measurements of the atmospheric greenhouse gases to the R/V “MIRAI”.

In this ArCS research program, I stayed at Bylot Island and Pond Inlet, located at Nunavut, Canada. Bylot Island is a National Park (Sirmilik national park) which is strictly protected by the Canadian government. To enter this island, we need to take an orientation session for the permission at Parks Canada and arrange the helicopter by our self. This strict management contributes to the maintenance of beautiful natural ecosystems. Pond Inlet is an Inuit village at the north Baffin. Many researchers use this village as a logistics base for research in Bylot during summer.

As a part of ‘theme 6’ ecosystem and biodiversity research program, ArCS researchers studied seabirds breeding on St Lawrence Island, Northern Bering Sea. This season is the third year of our fieldwork, which started in 2016. Researchers from NIPR, Hokkaido University, and University of Alaska Fairbanks worked together with native guides from St. Lawrence Island, from mid-July to the end of August. I traveled to join the fieldwork from 31 July – 18 August 2018.

In order to estimate an influence of ocean acidification in sub sea-surface waters to planktons bearing calcium carbonate shell, the subgroup of “theme 4” in ArCS project has conducted fixed point observation using bottom-tethered mooring in Pacific side of the Arctic Ocean. In this August, I joined the Arctic Ocean cruise (Leg 1) of ice breaker ARAON of Korean Polar Research Institute (KOPRI) to deploy our mooring, which had composed of sediment traps taking particles in water and some sensors to record hydrographic parameters such as pH, temperature, salinity, and ice thickness for a year.