(Table 1) Snow and ice thickness and layering at observation points of the North Pole 34 drifting station, supplement to: Nedashkovsky, A P; Khvedynich, S V; Petrovsky, T V (2009): Alkalinity of sea ice in the high-latitudinal Arctic according to the surveys performed at North Pole Drifting Station 34 and characterization of the role of the Arctic ice in the CO2 exchange. Oceanology, 49(1), 55-63

• Main Authors: Nedashkovsky, A P, Khvedynich, S V, Petrovsky, T V
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2009
• Subjects: Event label; Latitude of event; Longitude of event; Sea ice thickness; Snow thickness; Thickness; Number; Sea ice corer; Sea ice observation; SP-34; Ice drift station; Archive of Ocean Data ARCOD; Arctic; North Pole; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.726428; https://doi.pangaea.de/10.1594/PANGAEA.726428

Variability of total alkalinity in sea ice of the high-latitudinal Arctic from November 2005 to May 2006 is considered. For the bulk of one- and two-year sea ice, alkalinity dependence on salinity is described as TA = k x Sal, where k is salinity/alkalinity ratio in under-ice water. The given relationship is valid within a wide range of salinity from 0.1 psu in desalinated fraction of two-year ice to 36 psu in snow on the young ice surface. Geochemically significant deviations from the relationship noted were observed exclusively in snow and the upper layer of one-year ice. In the upper layer of one-year ice, deficiency of alkalinity is observed ( delta TA ~= -0.07 mEq/kg, or -15%). In snow on the surface of the one-year ice, alkalinity excess is formed under desalination ( delta TA is as high as 1.3 mEq/kg, or 380%). Deviations registered are caused by possibility of carbonate precipitation in form of CaCO3 x 6H2O under seawater freezing. It is shown that ice formation and the following melting might cause losses of atmospheric CO2 of up to 3 x 10**12 gC/year.