Abstract
The Winter Process Cruise (WPC) aboard RV Kronprins Haakon (KH2021702) conducted observations on processes that control the position and variability of the polar front in the Northern Barents Sea and the distribution of Arctic and Atlantic water masses. Moreover, the WPC serviced 2 gateway moorings sites (M1 and M4) and collected complementary hydrographic, microstructure and current profiles to detect the winter circulation pattern and the layering structures between the two competing water masses. 
 Meteorological measurements were also made.
Highlights
The Winter Process Cruise (WPC) aboard RV Kronprins Haakon (KH2021702) conducted dedicated observations on processes that control the position and variability of the polar front in the Northern Barents Sea and the distribution of Arctic and Atlantic water masses
We studied Kvitøyarenna, a deep trench between Nordaustlandet and Kvitøya, through which warm Atlantic water penetrates the Barents Sea
20 km of undulating transects were made with an AUV
Summary
The Winter Process Cruise (WPC) aboard RV Kronprins Haakon (KH2021702) conducted observations on processes that control the position and variability of the polar front in the Northern Barents Sea and the distribution of Arctic and Atlantic water masses. The WPC serviced 2 gateway moorings sites (M1 and M4) and collected complementary hydrographic, microstructure and current profiles to detect the winter circulation pattern and the layering structures between the two competing water masses. Current and microstructure measurements were made several times along two Polar Front sections (B, I) and along four water mass circulation sections (K, L, M, N) to follow the path of warm Atlantic water and cold Arctic water. A Slocum glider equipped with microstructure sensors was deployed and recovered after 14 days. 20 days of radiation data from ship-mounted radiometer, and 16 days of wave data from bowmounted wave sensor were collected. 9 short flights with remotely piloted aircraft were made. 15 wave sensors and 19 surface drifters were deployed on ice floes from the southern ice edge into pack ice and various places in the northwestern Barents Sea
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