The SeaExplorer glider Sea028 was deployed from the research vessel R/V Lance on the 24 July 2017 at 78.65°N, 9.70°E, on the western slope of Svalbard. The glider was recovered on 7 August 2017 at 79.99°N, 9.51°E. It performed six crossing of the western Svalbard slope. The glider was equipped with a GPCTD (Glider Payload Conductivity Temperature Depth from SeaBird), a dissolved oxygen sensor (Sea Bird SBE43F), and an optical sensor measuring Chlorophyll a (470/695 nm), Colored Dissolved Organic Matter (CDOM, 370/460 nm), and the total particle concentration or backscatter (backscattering at 700 nm) (EcoPuck from Wetlabs). The dataset is composed of the data corrected from the thermal lag and the sensor lag, despiked and interpolated every 1m. The profiles are separated. Please note that the oxygen data are not accurate for the second half of the time series (sensor bias).