X-CTD profiles collected along 30°E during the northbound transit from 82.5°N to 88°N on the Norwegian Polar Institute AO-2024 cruise.

X-CTD 1850 (Expendable conductivity-temperature-depth) probes (Lockheed Martin, USA) were used for a hydrographic section along approx. 30 degrees East on the Kronprins Haakon’s way north during the AO-2024 cruise. The X-CTD probes were launched from the aft of the ship while sailing slowly (1-2 knots) in leads between ice floes. They measured conductivity and temperature while falling at a known rate, from which depth was inferred. The maximum operating depth of the probe was 1850 meters.

Please refer to the AO-2024 cruise report for full information (https://hdl.handle.net/11250/3145717). The data are in a single, self-documented netCDF file. Profile data are organised in tables with one column per cast and one row per depth bin.