CONCERNING THE FACTORS FORMING THE HUMIDITY MODE OF BUILDINGS

2021 ◽  
Vol 93 (1) ◽  
pp. 106-113
Author(s):  
N.G. VOLKOVA ◽  
◽  
E.Y. TSESHKOVSKAYA ◽  
Keyword(s):  
Climate Change ◽  
Relative Humidity ◽  
Air Temperature ◽  
Negative Impact ◽  
Well Being ◽  
Internal Environment ◽  
Outdoor Air ◽  
The Russian Federation ◽  
Operation Cycle ◽  
Negative Phenomena

Climate change affects cities and settlements in the Russian Federation. In addition to the increase in outdoor air temperature, its relative humidity also changes. Increasing humidity in the internal environment of buildings leads to negative phenomena, such as dampness of the room, which has a negative impact on the well-being of people and the safety of buildings 'enclosing structures. In some cases, in addition to General exchange ventilation, it is possible to regulate the humidity state of the premises by using a sorbing material as a lining for the interior surface of the premises. In NIISF RAASN, analytical and mathematical studies of the humidity state of premises in the annual operation cycle were conducted, which showed that the relative humidity in the room can be regulated by using the correct selected sorbing material.

scholarly journals Impactos das mudanças climáticas na demanda hídrica e duração do ciclo do sorgo forrageiro e feijão-caupi no estado de Pernambuco

2015 ◽  
Vol 8 ◽  
pp. 542
Author(s):  
José Edson Florentino de Morais ◽  
Thieres George Freire da Silva ◽  
Marcela Lúcia Barbosa ◽  
Wellington Jairo da Silva Diniz ◽  
Carlos André Alves de Souza ◽  
...  
Keyword(s):  
Climate Change ◽  
Relative Humidity ◽  
Air Temperature ◽  
Water Demand ◽  
Stomatal Resistance ◽  
The State ◽  
Extreme Weather Events ◽  
Climate Change Scenarios ◽  
Area Index ◽  
Forage Sorghum

O aumento na ocorrência de eventos climáticos extremos nas últimas décadas é uma forte evidência das mudanças climáticas. Em regiões Semiáridas, onde a pressão de desertificação tem se intensificado, são esperadas diminuição da disponibilidade de água e maior ocorrência de períodos seca, e, consequentemente, efeitos na resposta fisiológica das plantas. Assim, objetivou-se analisar os impactos dos cenários de mudanças climáticas sobre a duração do ciclo fenológico e a demanda de água do sorgo forrageiro e do feijão-caupi cultivados no Estado de Pernambuco. Foram utilizados os valores mensais da normal climatológica brilho solar, temperatura do ar, umidade relativa do ar e velocidade do vento de dez municípios. Considerou-se um aumento de 1,8°C (Cenário B2) e 4,0°C (Cenário A1F1) na temperatura do ar e um decréscimo de 5,0% dos valores absolutos de umidade relativa do ar, além do aumento de 22% na resistência estomática e de 4% no índice de área foliar. Com base nessas informações foram gerados três cenários: situação atual e projeções futuras para B2 e A1F1. Os resultados revelaram uma redução média de 11% (B2) e 20% (A1F1), e de 10% (B2) e 17% (A1F1) na duração do ciclo, e de 4% (B2) e 8% (A1F1), e 2% (B2) e 5% (A1F1) na demanda de água acumulada para o sorgo forrageiro e feijão-caupi, respectivamente. Conclui-se que a magnitude das reduções da duração do ciclo e a demanda de água simulada para as culturas do sorgo forrageiro e do feijão-caupi variaram espaço-temporalmente no Estado de Pernambuco com os cenários de mudanças climáticas.ABSTRACT The increase in the occurrence of extreme weather events in recent decades is a strong evidence of climate change. In semiarid regions, where the pressure of desertification has intensified, are expected to decrease in the availability of water and higher occurrence of drought periods, and, consequently, effects on physiological response of plants. Thus, the objective of analyzing the impacts of climate change scenarios on the duration of phenological cycle and water demand of forage sorghum and cowpea, grown in the State of Pernambuco. Monthly values were used normal climatological solar brightness, air temperature, relative humidity and wind speed of ten municipalities. It was considered an increase of 1.8° C (B2 Scenario) and 4.0° C (A1F1 Scenario) on air temperature and a decrease of 5.0% of the absolute values of relative humidity, in addition to the 22% increase in stomatal resistance and 4% in leaf area index. Based on this information were generated three scenarios: current situation and future projections for B2, A1F1. The results revealed an average reduction of 11% (B2) and 20% (A1F1), and 10% (B2) and 17% (A1F1) for the duration of the cycle, and 4% (B2) and 8% (A1F1), and 2% (B2) and 5% (A1F1) in accumulated water demand for forage sorghum and cowpea, respectively. It is concluded that the magnitude of the reductions in the duration of the cycle and the simulated water demand for crops of forage sorghum and cowpea ranged space-temporarily in the State of Pernambuco with climate change scenarios.

scholarly journals Microbiome in an Office Building Using a Cooling Trench as an Outdoor Air Duct

2019 ◽  
Vol 111 ◽  
pp. 06045
Author(s):  
Mizuki Niimura ◽  
U Yanagi
Keyword(s):  
Relative Humidity ◽  
Energy Saving ◽  
Air Temperature ◽  
Indoor Air ◽  
Principal Coordinate Analysis ◽  
Office Building ◽  
Metagenomic Analysis ◽  
Outdoor Air ◽  
Energy Saving Technique ◽  
Building Cooling

Subterranean temperature at a depth of 10 m is almost equal to the average outdoor air temperature of the same area. Therefore, if a building cooling trench is used as an outdoor air duct, outdoor air can be cooled in summer and warmed in winter. This energy-saving technique is often used in Japan. However, since the relative humidity in a cooling trench is high, microbe numbers tend to increase in summer. The present study sought to characterize the microbiome status in the cooling trench of such an office building in Japan. Specifically, we performed a metagenomic analysis in which we analyzed DNA directly upon collection from the environment, without intervening cultivation. The results showed the presence of bacteria of the genera Pseudomonas, Lactobacillus, Nesterenkonia, Staphylococcus, Deinococcus, Acinetobacter, Enhydorobacter, and Corynebacterium. Bacteria of the genera Nesterenkonia, Deinococcus, Enhydorobacter, and Corynebacterium predominated on the surface of the trench. Notably, bacteria of the genus Nesterenkonia constituted >50% of the organisms on the surface of the downstream end of the cooling trench. Principal coordinate analysis was used to compare bacterial inhabitants of outdoor air, indoor air from 2nd- and 3rdfloor offices, and the region downstream of the cooling trench. The results suggested that the microbiome of air in this cooling trench influenced indoor air within the building.

POSSIBLE CHANGES OF CLIMATE CONDITIONS IN UKRAINE TO THE MIDDLE OF THE XXI CENTURY

2020 ◽  
pp. 94-100
Author(s):  
L.V. Malytska ◽  
V. O Balabukh
Keyword(s):  
Climate Change ◽  
Wind Speed ◽  
Relative Humidity ◽  
Air Temperature ◽  
Climate Model ◽  
Temporal Distribution ◽  
Climatic Parameters ◽  
Average Wind Speed ◽  
Climate Conditions ◽  
A1b Scenario

In Ukraine, as in the world, substantial climatic changes have happened throughout past decades. It is a fact that they are manifested in changing of parameters of the thermal regime, regimes of wind and humidity. It is expected that they will be observed also in future that will lead to aggravation of negative effects and risks due to climate change. That determines the relevance of the problem of forecasting such changes in future both globally and regionally. After all, knowledge of climate’s behavior in future is very important in the development of strategies, program and measures to adapt to climate change. The article is devoted to assessing spatio-temporal distribution main climatic indicators (air temperature, wind speed and relative humidity) in Ukraine, their variability and the probable values to the middle of the 21st century (2021-2050). Projection of changes in meteorological conditions was made for A1B scenario of SRES family using data of the regional climate model REMO and data from the hydrometeorological observation network of Ukraine (175 stations). Estimated data obtained from the European FP-6 ENSEMBLES project with a resolution of 25 km. For spatial distribution (mapping) we used open-source Geographic Information System QGIS, type of geographic coordinate system for project is WGS84. In the middle of the XXI century, if A1B scenario is released, it is expected a significant changes of climatic parameters regarding the 1981-2010 climatic norm: air temperature is rise by 1,5 °C, average wind speed is decrease by 5-8%, relative humidity in winter probably drop by 2%, but in summer it rises by 1,5%. The unidirectionality of the changes is characteristic only of air temperature, for wind speed and relative humidity the changes are in different directions. The intensity of changes is also not uniform across the country for all climatic parameters, has its regional and seasonal features. Statistical likelihood for most of highlighted changes for all climatic parameters is 66 % and more, the air temperature change is virtually certain (p-level <0.001).

scholarly journals The effect of humidity and temperature on human well-being in the forest and on open terrain

2016 ◽  
Vol 77 (2) ◽  
pp. 151-157 ◽  
Author(s):  
Ewa Dragańska ◽  
Monika Panfil ◽  
Zbigniew Szwejkowski
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Reference Value ◽  
Well Being ◽  
Forest Area ◽  
Night Temperature ◽  
Hot Days

Abstract Between 01.01.2010 and 31.12.2011, we conducted measurements of air temperature and relative humidity at points located deep within forest area, along the edge of the forest in the immediate vicinity of a lake and in open terrain. The thermal and humidity conditions that have a stimulating effect on human well-being were determined for the selected locations by calculating the number of hot (tmax ≥ 25°C) and very hot days (tmax ≥ 30°C) as well as the number of frosty (tmax < 0°C) and very frosty days (tmin ≤ −10°C). The range of the stimulatory effect on human well-being by temperature was determined based on changes in the average night temperature and the amplitude of the daily air temperature. Stimulating humidity conditions were determined by comparing the the relative humidity to a reference value associated with a moist feeling and calculating the number of humid days (s ≥18.8 mbar).

scholarly journals Influence of detailing the climate model on the calculation of energy consumption

2020 ◽  
Vol 164 ◽  
pp. 02008
Author(s):  
Elena Malyavina ◽  
Olga Malikova ◽  
Luong Van Pham
Keyword(s):  
Energy Consumption ◽  
Relative Humidity ◽  
Air Temperature ◽  
Climate Model ◽  
Cooling System ◽  
Climatic Data ◽  
Outdoor Air ◽  
Direct Measurements ◽  
Air Conditioning Systems ◽  
Parameter Values

The repeatability of outdoor air temperature and enthalpy combinations in a construction area is a necessary initial information for calculating the energy consumption of air conditioning systems. The most convenient form of presenting climatic data in such calculations is the probabilistic-statistical model, which constitutes a Table, the cells of which show the probabilistic repeatability of the outdoor air temperature and relative humidity. The parameter values given on the vertical and horizontal scales, that form the cell boundaries, can be taken with larger or smaller increments. The paper that served as the basis for this article, provides verification of the initial climatic model detailing experimentally under full-scale conditions in the city of Hanoi (Vietnam). The criterion for the appropriate model detailing was the deviation of the energy consumption estimates of the room cooling system, got experimentally and by calculation. Moreover, the calculations were performed not only on two climate probabilistic and statistical models, but also on the data of direct measurements of the outdoor air temperature and relative humidity with an accuracy of 0.1 for temperature and up to 2 % for relative humidity.

ANALYSIS OF THE REPRODUCTIVE HEALTH OF THE POPULATION OF THE VORONEZH REGION FOR 2014-2019

2021 ◽  
pp. 190-198
Author(s):  
Алёна Геннадьевна Деряева ◽  
Владимир Петрович Косолапов ◽  
Галина Владимировна Сыч ◽  
Ольга Геннадьевна Деряева
Keyword(s):  
Russian Federation ◽  
Birth Rate ◽  
Negative Impact ◽  
Positive Impact ◽  
Well Being ◽  
Demographic Development ◽  
Demographic Situation ◽  
National Project ◽  
The Russian Federation ◽  
The Government

Существует взаимосвязь между здоровьем населения страны и экономическим, политическим ростом, демографической ситуацией в стране, что признается и медицинской и экономической науками. На сегодня, улучшение демографической ситуации в Российской Федерации является одной из приоритетных задач государства. С каждым годом рождаемость снижается, женщин фертильного возраста становится меньше, число заболеваний репродуктивной системы растет, происходят изменения в нравственных и семейно-брачных отношениях. Все это оказывает негативное влияние на демографическую ситуацию в целом. Для решения этой проблемы правительство Российской Федерации реализует национальные проекты «Здравоохранение» и «Демография», направленные на устранение демографических проблем. По словам заместителя Председателя Правительства Российской Федерации, куратора национального проекта «Демография» Татьяны Голиковой, «Демография» - важнейший национальный проект. Весь комплекс его мероприятий направлен на достижение главной государственной задачи - «Сохранение населения, здоровье и благополучие людей». Данное направление позволит обеспечить эффективное социально-демографическое развитие, и положительно повлияет на социально-экономическую ситуацию в стране. Результаты исследования, представленные в статье, позволяют определить мероприятия по улучшению демографической ситуации в стране, оценить уровень рождаемости, смертности, естественного прироста, младенческую смертность There is a relationship between the health of the country's population and the economic, political growth, demographic situation in the country, which is recognized by the medical and economic sciences. Today, improving the demographic situation in the Russian Federation is one of the priority tasks of the state. Every year the birth rate is decreasing, women of fertile age are decreasing, the number of diseases of the reproductive system is growing, and there are changes in moral and family-marriage relations. All this has a negative impact on the demographic situation as a whole. To solve this problem, the Government of the Russian Federation is implementing the national projects "Healthcare" and "Demography", aimed at eliminating demographic problems. According to the Deputy Prime Minister of the Russian Federation, the curator of the national project "Demography" Tatyana Golikova, "Demography" is the most important national project. The whole range of its activities is aimed at achieving the main state task - "Preservation of the population, health and well-being of people". This direction will ensure effective socio-demographic development, and will have a positive impact on the socio-economic situation in the country. The results of the study presented in the article allow us to determine measures to improve the demographic situation in the country, to assess the level of birth rate, mortality, natural growth, infant mortality

RESEARCH OF METEOROLOGICAL AND HYDROLOGICAL PARAMETERS OF THE CAUCASUS REGION

2021 ◽  
Vol 81 (2) ◽  
pp. 114-124
Author(s):  
BOZIEVA ZHANNA CH. ◽  
◽  
AGOEVA ELEONORA A. ◽  
ITTIEV ABDULLAX B. ◽  
◽  
...  
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Hydrological Cycle ◽  
Atmospheric Precipitation ◽  
Surface Air Temperature ◽  
Well Being ◽  
Extreme Weather Events ◽  
The Caucasus ◽  
The Impact ◽  
The Relationship

The negative effects of global climate change and the impact of rising surface air temperatures are already evident. Among the many echoes of these processes are the melting of glaciers, the reduction of the ice cover of the northern seas, the gradual disappearance of permafrost, sea level rise, soil erosion, and extreme weather events such as floods, hurricanes, droughts, and forest fires. As a result, the world's freshwater resources, public health and the well-being of the environment are under threat. Annually renewable fresh water resources, represented by the annual flow of rivers, are of undoubted value. Our goal was to identify the relationship of meteorological parameters, such as surface air temperature and precipitation in the high-altitude region of the Central Caucasus, with water consumption in the lowland territory of the Caucasus on the example of the river.Terek (art. Kotlyarevskaya). These studies are particularly valuable from the point of view of the relationship between climate change and its further impact on the hydrological cycle of the lowland regions of the Caucasus. In the course of the research, the relationship was revealed, indicating that the distribution of river flow over the territory of the Caucasus corresponds to the distribution of the annual amounts of surface air temperature and the annual amounts of atmospheric precipitation.

scholarly journals Persepsi Petani Sayuran Tentang Dampak Perubahan Iklim di Sulawesi Selatan (Perception of Vegetable Farmers on the Impact of Climate Change in South Sulawesi)

2019 ◽  
Vol 28 (1) ◽  
pp. 133 ◽  
Author(s):  
Witono Adiyoga ◽  
Rofik Sinung Basuki
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Negative Impact ◽  
Disease Incidence ◽  
Household Waste ◽  
Impact Of Climate Change ◽  
South Sulawesi ◽  
Vegetable Farmers ◽  
The Impact ◽  
Impacts Of Climate Change

<p>Walaupun masih terdapat ketidakpastian tentang kapan, bagaimana, dan di mana perubahan iklim akan berdampak negatif terhadap produksi pertanian dan ketahanan pangan, sebagian besar ilmuwan sepakat bahwa dampaknya terhadap sektor pertanian di daerah tropis akan semakin parah dibandingkan di daerah temperate. Tujuan penelitian adalah mempelajari persepsi petani tentang dampak perubahan iklim terhadap variabilitas cuaca yang terjadi dan dampak perubahan iklim terhadap usahatani. Penelitian survei dilaksanakan pada ekosistem sayuran di dataran tinggi dan rendah Sulawesi Selatan dari bulan Juni hingga Agustus 2012. Pada setiap ekosistem, 110 petani sayuran dipilih secara acak (total = 220 responden). Pengumpulan data dilakukan melalui metode wawancara menggunakan kuesioner terstruktur. Hasil penelitian menunjukkan bahwa sebagian besar responden lintas ekosistem dan pola musim mempersepsi tiga jenis kejadian alam akibat perubahan iklim secara signifikan yang menempati tiga urutan tertinggi pada awal musim tanam, yaitu (a) pola curah hujan sangat tidak menentu, (b) suhu udara meningkat, dan (c) musim hujan datang lebih awal, diikuti oleh minggu-minggu kering. Mayoritas responden juga mempersepsi tiga jenis kejadian cuaca ekstrim akibat perubahan iklim signifikannya menempati tiga urutan tertinggi, yaitu (a) sinar matahari sangat terik, (b) gelombang dan temperatur udara panas dan (c) kekeringan. Kebakaran hutan, asap hasil pembakaran bahan bakar oleh industri, asap kendaraan bermotor, dan penggundulan hutan secara konsisten, dikemukakan sebagian besar petani lintas ekosistem dan pola musim sebagai faktor yang menyebabkan terjadinya perubahan iklim. Sementara itu, separuh lebih responden menyatakan ketidaksetujuan/keragu-raguannya bahwa usahatani sayuran yang dilakukan secara terus menerus, pembakaran limbah tanaman/rumah tangga, penggunaan pupuk/pestisida kimia berlebih, penggunaan kayu bakar, dan penggunaan air irigasi tinggi memberikan kontribusi cukup signifikan terhadap terjadinya perubahan iklim. Sebagian besar responden mempersepsi tiga dampak perubahan iklim terhadap usahatani yang signifikansinya menempati tiga urutan tertinggi, yaitu (a) risiko kegagalan panen yang semakin tinggi, (b) risiko kerugian usahatani yang semakin tinggi dan berpengaruh terhadap keberlanjutan usahatani, serta (c) suhu yang semakin tinggi menyebabkan peningkatan serangan hama dan munculnya hama baru. Kegiatan edukasi terpadu melalui penyuluhan pertanian maupun sekolah lapang iklim perlu terus dilakukan untuk mengoreksi beberapa perbedaan persepsi tentang penyebab perubahan iklim.</p><p><strong>Keywords</strong></p><p>Sayuran; Dataran rendah; Dataran tinggi; Variabilitas iklim; Dampak perubahan iklim</p><p><strong>Abstract</strong></p><p>Vegetable farmers’ perception of climate change impacts in South Sulawesi. Even though there are still uncertainties regarding when, how, and where the climate change will have a negative impact on agricultural production and food security, most scientists agree that the impact of climate change on agricultural sector is more severe in the tropical regions as compared to the temperate regions. The objective of this study was to examine farmers’ perceptions regarding the impacts of climate change on weather/climate variability and on their vegetable farms. A survey was carried out in lowland and highland vegetable areas of South Sulawesi in June until August 2012. In total, there were 220 respondents randomly selected for interview by using a structured questionnaire. Results suggest that most respondents across different ecosystem and seasonal pattern perceive three climates variability as the most important impacts of climate change i.e. (a) high uncertainty of rainfall pattern, (b) increasing air temperature and (c) earlier start of rainy season followed by dry weeks. Those respondents also perceive three most important extreme weathers, such as (a) intense heat/sun, (b) hot air temperature and waves and (c) long dry season. Forest fire, smoke from industrial fuel burning, smoke from motor vehicles and deforestation are consistently identified as factors that significantly contribute to the existence of climate change. Meanwhile, more than half of respondents are disagree or in doubt that continuous vegetable cultivation, crop/household waste, excessive use of fertilizers, and pesticides, use of cooking woods, and excessive use of irrigation water as factors that contribute to climate change. Most respondents perceive three most important impacts of climate change to their vegetable farms i.e. (a) increasing crop failure risk, (b) increasing financial loss risk that directly affects farm sustainability, and (c) increasing air temperature that tends to increase more severe pest/disease incidence and bring out new pests and diseases. A concerted educative effort through agricultural extension or climate field school should be carried out, especially to correct some misperceptions regarding causes of climate change.</p>

scholarly journals Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990

2014 ◽  
Vol 94 (4) ◽  
pp. 121-145
Author(s):  
Zoran Nikic ◽  
Мilenа Аndjelic ◽  
Ljubomir Letic ◽  
Vaso Мrvaljevic ◽  
Vesna Nikolic
Keyword(s):  
Climate Change ◽  
Comparative Analysis ◽  
Relative Humidity ◽  
Air Temperature ◽  
Reference Period ◽  
Temperature And Precipitation ◽  
Four Seasons ◽  
The Republic ◽  
Climatic Elements

Climate change that has occurred at the end of the last and at the beginning of this century, among other things, has a certain impact on forests as well. For the territory of Eastern Serbia, for two periods of climate observations, the reference period 1961-1990 and the period 1991-2012, a comparative analysis of the following climatic elements was done: air temperature, amount of precipitation and relative humidity of air. Calculations were performed on the basis of collected and systematized data from 11 meteorological stations (6 synoptic/main climatological and 5 regular climatological) that were part of the Republic Hydrometeorological Service, situated in the area of Eastern Serbia. Analysis of the anomalies of air temperature and precipitation as indicators of climate change for the period 1991-2012 compared to the reference period 1961-1990 was done separately for each of the four seasons (winter, spring, summer, autumn) and summarized for each period. The results of the comparative analysis show that in the period 1991-2012 compared to the reference period 1961-1990, there was an increase in the average annual air temperature, as well as the increase in the average air temperature for all four seasons, and a decrease in the average annual amounts of precipitation and the decrease in the relative humidity of air.

scholarly journals GLOBAL CLIMATE CHANGE: CAUSES OF OCCURRENCE AND CONSEQUENCES FOR AGRICULTURAL PRODUCTION IN THE SOUTHERN STEPPE

2019 ◽  
pp. 88-98
Author(s):  
S. P. Goloborodko ◽  
O. M. Dymov
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Global Climate Change ◽  
Agricultural Production ◽  
System Analysis ◽  
Negative Impact ◽  
Global Climate ◽  
World Ocean ◽  
Simultaneous Increase

Relevance of the research. If greenhouse gases in the XXI century enter the atmosphere in the same volume as now, the increase in the average temperature on the planet will reach 2–4°C, and therefore the threat of extinction of up to 20–30% of species of animals and plants in existing biocenosis is not excluded. At the same time, the water level in the world ocean will rise, which during the XX century became higher by 17 cm, that is, more than for the previous 2000 years. Simultaneously with the increase in the average monthly air temperature in the conditions of natural moisturizing (without irrigation) of the southern Steppe subzone of Ukraine in recent years, insufficient precipitation has been recorded, especially in July, August and September that, according to various estimates, is typical for the semi-desert and desert. As a result, the aridity of the climate has increased and the frequency of droughts has risen as well. If for the period of 400 years, in the XI–XIV centuries droughts occurred only 8 times, in the XVII–XVIII – 17, in the XIX – 20, in the XX century the number of them increased to 30. The purpose of the article is to reveal the causes of global climate change on the planet and its impact on agricultural production of the southern Steppe subzone that resulted in increasing the coefficient of moisture, evaporation and moisture deficit. Research methods. The study was carried out using long-term meteorological observations of Kherson meteorological station. Scientific research was based on the complex application of statistical, monographic, abstract-logical methods and system analysis. Research results. The analysis of the main causes of global and regional climate change was conducted. Four models of the bases of climate change on the planet Earth were made. The influence of climate change on the formation of crops yield in the subzone of the southern Steppe was specified. The amount of precipitation fell during the growing period of 2011–2017 in medium dry and dry years shows that, compared to the long-term average precipitation, it was significantly lower and amounted to 47.2–63.6 mm. In average for the 65 years (1945–2010) evaporation was 722.0 mm, and the deficit of moisture, respectively 487.4 mm. In wet years, the volatility does not exceed 608.6 mm, and the deficit of moisture was made up of 243.6 mm. In average as to water supply years the evaporation increased up to 645.7–746.3 mm and the deficit of moisture increased up to 406.7–507.7 mm. In mid-dry and dry years, evaporation increased up to 769.8–934.5 mm, and the deficit of moisture – up to 580.9–791.0 mm. Conclusions. The decrease in precipitation, especially in dry years, compared to average annual indicators, was recorded in spring period as 24–27% and in autumn – as 62–65%, along with a simultaneous increase in air temperature in those periods as 2.7 and 2.8°C respectively. In general, during the vegetation period the increase in evaporation was 30–31% and the deficit of moisture was 53–55% that resulted in low yields of crops. The main way to overcome the negative impact of global climate change on the agricultural production of the southern Steppe subzone is the effective use and further extending the areas of actual irrigation, that will ensure stable high yields and food security of the state.

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