Organic and inorganic geochemical properties of sea ice cores in the nearshore zone of the southern Canadian Beaufort Sea

For this dataset, 12 sea ice cores were cored and sampled in the coastal zone of the southern Canadian Beaufort Sea, near Herschel Island – Qikiqtaruk. The goal was to investigate the incorporation of organic matter into sea ice and its release from winter land-fast ice upon melting. The samples were collected from two intersecting transects between Herschel Island and the mainland Yukon coast before the beginning of the melting season in spring 2019. Analyses encompass dissolved organic carbon (DOC) concentration, colored dissolved organic matter (CDOM) spectra, salinity, stable water isotope ratios as well as suspended particulate matter (SPM) concentration. We seek to gain information on how and how much organic matter has been incorporated during the winter freeze up and could be potentially released upon melt. […]