The publication of the published part of the Water Cadastre of the Russian Federation EMDM (annual and long-term data on the regime and quality of waters of seas and estuaries of rivers), prepared with the help of a technological complex for preparing EMDM, specially developed in the data center of the Federal State Budgetary Institution "VNIIGMI-MCD" and forms, based on meaningful processing of data from standard marine hydrometeorological and hydrochemical observations at hydrometeorological stations and posts, and at stations of standard transects and oceanographic surveys, contains combined annual and long-term data on the regime and quality of surface waters.
EMDM consists of two parts: in the first part of "The Sea" data of standard marine hydrometeorological and hydrochemical observations are published and in the second part "Sea estuaries of rivers" - data of standard hydrological observations of hydrometeorological and hydrochemical characteristics.
The EMDM tabular material contains a sample, averaged and calculated characteristics of hydrometeorological characteristics (sea level, water, and air temperature, salinity, waves, currents, ice regime, wind, pressure, cloudiness) by months and for the year for the entire observation period and for the current (calculated) year.