Contents

Russian Meteorology and Hydrology

Vol. 50, No. 4, 2025

Changes in Surface Climate (Air Temperature and Precipitation) on the Territory of Russia in the 21st Century

M. Yu. Bardin, and O. F. Samokhina p. 255  abstract

Engineering and Hydrological Calculations and Climate Change: How to Develop New Approaches?

M. V. Bolgov, and A. G. Lobanova p. 267  abstract

Adaptation of the Russian Hydrological Monitoring Network to Climate Change: Challenges and Prospects

T. M. Aksyanov, S. A. Zhuravlev, S. A. Ivanova, L. S. Kurochkina, O. E. Kucherenko, and T. I. Yakovleva p. 276  abstract

Assessment of the State of the Inland Surface Water Pollution Monitoring Station Network of the Roshydromet State Observation Network in 2018–2023

M. M. Trofimchuk, O. L. Romanyuk, V. M. Demidova, M. A. Golubkina, and E. A. Ermakovich p. 283  abstract

Genetic Hydrology: Runoff Formation Mechanisms in New Conditions

N. I. Koronkevich, E. A. Barabanova, A. G. Georgiadi, S. V. Dolgov, I. S. Zaitseva, E. A. Kashutina, and I. P. Milyukova p. 288  abstract

Landscape Hydrological Studies of the Peak River Runoff in the South of Eastern Siberia in the Early 21st Century

L. M. Korytny, O. V. Gagarinova, E. A. Ilyicheva, N. V. Kichigina, I. Yu. Amosova, and M. V. Pavlov p. 300  abstract

New Data on the Effective Discharges of Russian Rivers

A. A. Kurakova, R. S. Chalov, and E. R. Chalova p. 307  abstract

Water Availability in the Russian Federation in a Changing Climate

Zh. A. Balonishnikova, and A. O. Eremeeva p. 317  abstract

Hydrological Features and Causes of the 2024 Ural River Flood in the Orenburg Oblast

S. A. Zhuravlev, S. V. Buzmakov, A. V. Yukhno, V. Yu. Georgievskii, E. A. Grek, and V. A. Meshcherin p. 326  abstract

Problems of Assessing the Water Loss due to an Additional Evaporation from the Flood Zones of Large Reservoirs: A Case Study for the Tsimlyansk Reservoir

V. S. Vuglinskii p. 336  abstract

Runoff Formation Factors and Ecosystem State of the Lena River in the 21st Century. Part 1: Natural, Climatic, and Anthropogenic Factors of the Lena Runoff Formation in the 21st Century

G. M. Chernogaeva, M. Yu. Bardin, V. S. Vuglinskii, S. V. Dolgov, N. I. Koronkevich, E. I. Kuprienok, E. A. Likhacheva, E. Ya. Ran’kova, and O. F. Samokhina p. 345  abstract

Runoff Formation Factors and Ecosystem State of the Lena River in the 21st Century. Part 2: The Lena River Water Quality in the 21st Century

G. M. Chernogaeva, N. I. Koronkevich, S. V. Dolgov, M. M. Trofimchuk, O. L. Romanyuk, E. I. Kuprienok, L. R. Zhuravleva, Yu. A. Malevanov, E. A. Barabanova, and T. N. Kushnareva p. 357  abstract