NABOS Cruises

NABOS Cruise 2021

In September 2021, 27 participants from the United States, Russia, Japan and Denmark embarked on a 40-day polar expedition aboard of the Russian research vessel R/V Akademik Tryoshnikov.

IARC's Igor Polyakov was chief scientist on the expedition. Other IARC team members included physical oceanographer Andrey Pnyushkov and graduate students Michael Lundberg and Dolly More.

Together with their international colleagues, they made many complex observations by recovering and deploying moorings and buoys, and through an extensive CTD (conductivity, temperature, depth) survey.

The ocean, ice and atmosphere measurements from this area of pronounced climate changes will help assess the state of the Arctic Ocean.

Past Cruises


2018 Cruise

The 2018 NABOS Expedition aboard the R/V Akademik Tryoshnikov was carried out under the auspices of the NABOS scientific project, bringing together international research institutions and research programs.

The exceptional magnitude of recent high-latitude changes in the ocean, ice, and atmosphere strongly suggests a potentially irreversible shift in the Arctic Ocean to a new climate state.

These changes have important implications for the Arctic Ocean’s marine ecosystem—especially for those components that depend on sea ice or that have temperature- and stratification-dependent sensitivities or thresholds.

Addressing these and other questions requires careful observations. To these ends, this expedition will provide key information about the historical transitions occurring in the Arctic Ocean.

  • Download the cruise booklet (contains cruise track, participant list, schedules, and other logistical information)
  • Fairbanks teacher Moira O'Malley blogged from aboard ship for the duration of the cruise, as part of the Teacher at Sea program. Go to her blog