46 
Cruise Report, RV ATAIR, Cruise 0671013-1, Bremerhaven - Skagen - Aberdeen, 19 Jul - 11 Aug 2022 
The operation of the VMADCP was documented manually throughout the cruise in a log file. 
Each time the VMADCP was restarted, a new file was created, and the file counter automati- 
sally increased. Configuration setup files were stored alongside the data whenever a change 
was made to the configuration. 
During VMADCP data processing, water-track calibration was performed to determine the 
phase and the amplitude of the transducer misalignment. The amplitude scale factor and trans- 
ducer orientation were calculated to minimise the root-mean-square difference between the 
astimated water velocity over the ground (using GPS navigation) before and after ship accel- 
erations, including major turns as well as stopping on station and getting underway after a 
station. As the cruise track did not include enough turns for proper analysis, additional turns 
were performed after leaving a station. The respective adjustments were an amplitude factor 
of 1.0408 and a misalignment angle amplitude factor and 1.464° 
Velocity from ADCP 150kHz @ 20 m (with tides) 
50°N 
N 
* 
58°N 
li SEIT 
REM af) 
B6°N 
54°N 
592°N 
MN 
A 
BP f 
A 
7} 
= 
12°E 
Figure 7.8. The oceanic flow field at a depth of 20 m as observed with a VMADCP system during cruise 
0671013-1. summer 2022. The tidal contribution to the flow field is still included. 
The VMADCP system worked properly during the entire cruise, and the data are expected to 
be of acceptable quality. However, the VMADCP settings and the resulting data should be 
sonsidered experimental, since cruise 067/013-1 was one of the first BSH cruises to the North 
Sea with the vessel’s VMADCP system in use. Additional post-cruise quality control and post- 
processing steps are therefore still necessary to obtain the final dataset and assess its final