Experience of using a dynamic stochastic approach for solving the problem of very short-range forecasting of state parameters of the atmospheric boundary layer

Discussed are the results of applying a dynamic stochastic method based on the use of the two-dimensional model and the Kalman filtering algorithm for solving the problem of the very short-range (from 0.5 to 6 hours) fore cast of air temperature and orthogonal components of the wind speed in the atmospheric boundary layer realized using the data of radio metric, sodar, and in creased-frequency radiosonde measurements. It is demonstrated that the pro posed technique and the appropriate algorithm give a rather high ac cu racy of very short-range fore casting of temperature and wind within the lead time range under consideration.     

Landscape diversity of specially protected natural territories of Nenets Autonomous Okrug

A landscape diversity representativeness assessment is made of the system of specially protected territories in Nenets Autonomous Okrug having regard to natural regionalization and zonal division. It is shown that the existing specially protected natural territories are representative for a small number of landscapes. Maps have been generated, which display the distribution of rare and threatened groups of landscapes, and territories have been identified, which are high priority for the establishment of specially protected natural territories.     

Multimodel Evaluation of Phytomass Dynamics of Tundra Plant Communities Based on Satellite Images

Izvestiya, Atmospheric and Oceanic Physics - This paper presents a two-stage method for solving the problem of predicting phytomass and the corresponding two-component model of phytomass dynamics....