G. S. Golitsyn

Laws of Random Walks Derived by A. N. Kolmogorov in 1934

 

5

O. Yu. Antokhina, P. N. Antokhin, E. V. Devyatova, and Yu. V. Martynova

Atmospheric Blockings in Western Siberia. Part 2. Long-term Variations in Blocking Frequency and Its Relation to Climate Change in Asia

 

16

I. V. Chernykh and O. A. Aldukhov

Estimates of Cloud Layer Number Based on Radiosonde Data from Russian Aerological Stations for 1964–2014

 

29

Ya. A. Virolainen, Yu. M. Timofeev, I. A. Berezin, S. P. Smyshlyaev,

M. A. Motsakov, and O. Kirner

Validation of Atmospheric Numerical Models Based on Satellite Measurements of Ozone Columns

 

40

V. A. Korshunov and D. S. Zubachev

Temporal Variations in the Vertical Distribution of Stratospheric Ozone over Obninsk from Lidar Data

  

48

Yu. A. Romanov and N. A. Romanova

Icebergs in the Southern Ocean and Factors Defining Their Distribution

 

61

S. L. Kravtsov, S. A. Lapanik, E. V. Lepesevich, and D. V. Golubtsov

The Use of Satellite and Ground-based Data for Assessing the Spring Frosts Frequency in the Republic of Belarus

 

75

S. S. Baisholanov, V. N. Pavlova, A. D. Kleshchenko, E. N. Mukanov,

D. A. Chernov, and A. R. Zhakieva

Assessment of Agroclimatic Resources of the Kostanay Region (Republic of Kazakhstan)

 

82

WINNERS OF THE CONFERENCE OF YOUNG SCIENTISTS

V. V. Shashkin

Prediction of Stratospheric Polar Vortex Dynamics with the SL-AV Global Atmosphere Model

 

92

A. A. Shestakova

Numerical Simulation of Wave Drag during Downslope Windstorms in Different Regions of Russia

 

98

COMMUNICATIONS

K. Kang, J. H. Lee, J. A. Chun, and D. Timlin

Impact of Altered Land Use on Urban Hydrology and Strategic Management Practices on Flooding Problems

 

105

INSTRUMENTS, OBSERVATIONS, AND PROCESSING

G. E. Kolokutin, B. A. Fomin, and V. V. Petrov

Actinometric System Aboard the Yak-42D “Roshydromet” Research Aircraft

 

114

REVIEWS AND CONSULTATIONS

E. S. Dmitrevskaya, T. A. Krasil’nikova, and O. A. Markova

Environmental Pollution and Radiation Situation on the Russian Federation Territory in December 2017

 

123

E. V. Ryazanova

Weather on the Russian Federation Territory in December 2017

 

128

T. V. Berezhnaya, A. D. Golubev, and L. N. Parshina

Anomalous Hydrometeorological Phenomena on the Russian Federation Territory in December 2017

 

132

CHRONICLE

A. Kh. Filippov (to the 85th Birthday)

141

In Memory of P. A. Kashinskii (to the 150th Birthday)

142

In Memory of P. A. Molchanov (to the 125th Birthday)

143

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