Variability of water temperature and salinity anomalies in August–September on the transect “Kola Section” for the period from 1970 to 2019

Abstract

The paper considers the interannual variability of temperature and salinity alon g the oceanographic section of the transect “Kola Section” for the period 1970–2019 using field measurements from the World Ocean Database, ICES and the local database of the Murmansk Marine Biological Institute RAS. Updated norms and anomalies of water temperature and salinity were calculated. Using the principal component analysis, the stations of the section were combined according to the scheme of currents of the Barents Sea. The classification of water temperature anomalies in the section according to the type of year was made. The warmest for the period from 1970 to 2017 in August– September was identified from 1970 to 1976. Spectral analysis of series of temperature anomalies, as well as series of external factors influencing it, showed the presence of several significant periodicities.