A. I. Khlebnikova and I. A. Sall

Basic Features of Climatic Changes in Cloud Cover over the Russian Territory

5

N. P. Shakina, E. N. Skriptunova, A. R. Ivanova, and I. A. Gorlach

Mechanisms of Vertical Motion Generation in the Global Models and Their Initial Fields as Related to the Precipitation Numerical Forecast

14

A. V. Muraviev, I. A. Kulikova, and E. N. Kruglova

Distribution of the Atmospheric Circulation Extreme Characteristics from the Reanalysis and Hydrodynamic Modeling Data

33

E. A. Titova, I. L. Karol, A. M. Shalamyanskii, L. P. Klyagina, and A. A. Solomatnikova

Statistical Analysis and Ranging of the External Factor Effects on the Total Ozone Fields over the Russian Territory in 1973–2007

48

E. V. Kvasnikova, S. M. Vakulovskii, S. K. Gordeev, O. M . Zhukova, S. V. Konstantinov, D. A. Manzon, and V. N. Yakhryushin

Radiation Monitoring in Bryansk Polessye: 21 Years after the Chernobyl Accident  

65

G. N. Voynov

Harmonic Analysis of the Sea Tides Based on the Standard Sea Level Observations

79

V. A. Kuzmin

Algorithms of the Automated Calibration of Multiparametric Models Used in Operational Systems of Flash Flood Forecasting

92
 REVIEWS AND CONSULTATIONS

A. M. Ovanesyants, T. A. Krasilnikova, and A. B. Ivanov

Environmental Pollution and Radiation Situation on the Russian Federation Territory in April 2009

105

 N. V. Satina

Weather on the Russian Federation Territory in April 2009

111

E. V. Vasil’ev, V. I. Luk’yanov, and M. G. Naishuller

Anomalous Hydrometeorological Phenomena on the Russian Federation Territory in April 2009

115
 CHRONICLE  75th Anniversary of the Far East Hydrometeorological Service Administration 123
75th Anniversary of the Kamchatka Hydrometeorological Service Administration 125
 To the Centenary of the Navigation Manuals of Tides and Tidal Currents (Tide Tables) 127
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