Digital atlas and evaluation of the influence of inter-annual variability on climate analyses

The Black Sea is a well-investigated marine basin. Since 1980 more than 100,000 oceanographic stations have been established in it. However, their distribution in time and location is not uniform and the number of observations significantly decreases with depth. Comparisons of climate products obtained from temperature and salinity data at different periods of time are characterized by significant differences. This can be explained by the fact that many results were obtained from a limited and not always comprehensive information set and by the considerable dependence of the results upon the methods of calculation. As is known, until recently, the inter-annual variability of hydrological parameters was not taken into account when calculating climate products. The purpose of this work is to demonstrate a necessity of taking into account the inter-annual variability of hydrological parameters when calculating climatic products.