Izvestiya of Saratov University.
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)


Meteorological characteristics and evapotranspiration dynamics of the Kafernigan river (Tajikistan) – a tributary of the Transboundary Amudarya River for the period 1946–2021

The research results of the meteorological characteristics and evapotranspiration dynamics in the middle reaches of the Varzob river, a tributary of the Kafernigan river, for the period 1946–2021 are presented. It has been established that temperature is a more active factor in the processes of evapotranspiration. A slight trend of decreasing precipitation at altitudes up to 400 m a. s.

Monitoring of monthly dynamics of thunderstorm activity in Iraq

The article presents the study results of the monthly variability thunderstorm activity at three meteorological stations located in Iraq over a ten-year period from 2000 to 2009. This is a study based on archived data from daily meteorological observations. The study of fronts for six months a year and for ten years showed that thunderstorms most often occur in March and April, accounting for about 47.42% of all thunderstorms. Moreover, 22.3% of them are in the northern mountainous region of Iraq.

Variability of Climatic Rates for Period of Instrumental Observations in Saratov

On the basis of a long series of observations (1912–2010 gg.) investigated long-term variability in temperature, precipitation and other meteorological parameters. It is shown that climate normal of temperature and precipitation in the modern period is significantly different from the baseline period of 1961–1990 gg., proposed by the WMO

Climatic Risk in Agricultural Production and Some Ways Their Overcome

This article touches upon daily urgent factfiles during the 30-year period. The author of the article calculates all famous in literature criteria of drought. But no one of them reflects a degree of a strong drought when more than 70% of crop dies. The author introduces first the physiological coefficient of drought

Characterization of Anomalous Precipitation and their Genesis in June 2013 and 2014 in Saratov

Circulation processes during the formation of anomalous precipitation in June 2013 аnd 2014, which identified a high yield of grain crops in the Saratov region, are analyzed.

Changeability of Maximally Possible and Total Evaporation on Territory of Saratov Area in the Conditions of Changing Climate

To the article the estimation of dynamic of annual precipitation is driven, maximally possible and total evaporation in the different soil-climatic zones of the Saratov area in the conditions of the global warming of climate. It is shown that in a period from 1981 to 2014 year noted a statistically significant increase in the maximum possible evaporation, which leads to an increase of deficit of evaporation. As a result of the observed tendencies the climate norms of gidromelioration in the area were increased on 200–300 м3 / hectare.

Sinoptical and Agrometeorological Conditions Anomalous Weather of the Autumn-winter Season 2015-2016 Year in the Saratov Region

The article provides an analysis of sinoptical conditions that caused the abnormal weather of autumn and winter 2015–2016 year in the Saratov region. The characteristic agrometeorological conditions in different soil-climatic zones of the region, showing the deviation of the air temperature and precipitation from the climatic norm and the assessment of their impact on growth, development, and overwintering of winter crops.

Features Synoptic and Agro-meteorological Conditions of the Autumn Period in 2016 in the Lower Volga Region and their Impact on the Autumn Growing Season of Winter Crops

The article presents an analysis of the synoptic and agrometeorological conditions prevailing in the region in the autumn of 2016. Shown anomaly hydrothermal regime and assessed the impact of the prevailing conditions at the seeding, the autumn vegetation and tempering of winter crops.