Features of the temperature regime effect on the duration of the crops vegetation period in Southern Ukraine

When modeling the prognostic changes in the temperature regime over the territory of Ukraine, the data of the research project for modeling the regional climate and assessing the consequences of its change (CORDEX) were used. The climate projection structure is based on a series of global climatic models (GCM) developed within the framework of CMIP5 project. The influence of the temperature factors on passing the phenological phases and oats yield in the South of Ukraine, implementing the RCP4.5 and RCP8.5 climate scenarios and comparing them with the long-term data is analyzed. As a result of the analysis of the changes in the temperature regime it was revealed that it will be warming the plants vegetation period. The probable change in the oats yield in the southern part of Ukraine under the conditions of climate change using the crop formation model was considered. It is assumed that by 2050 the timing of sowing and germinating the seedlings will be shifted to an earlier date, and the oats yield will increase by 1.26-1.32 times.

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Mode of atmospheric connection of soil Volynes in the modern climate condition

Visnyk of the Lviv University. Series Geography ◽

10.30970/vgg.2017.51.8894 ◽

2017 ◽

pp. 322-330

Author(s):

Nina Tarasyuk ◽

Mаryana Hanushchak

Keyword(s):

Crop Production ◽

Regional Climate ◽

Atmospheric Precipitation ◽

Vegetation Period ◽

Published Data ◽

Hydrothermal Coefficient ◽

Instrumental Observations ◽

Instrumental Period ◽

Annual Amount

The article a nalyzes in detail the dynamics of atmospheric precipitation for the entire instrumental period of observations in the territory of the Volyn region at six meteorological stations. The deviation in the parameters of the amount of precipitation in the long-term regime and the climate norm are revealed. For the entire period of observations in the region, the annual amount of precipitation is characterized by significant fluctuations. The highest precipitation was recorded in 2008 (779 mm), the smallest – in 1961 (319 mm). The differences of atmospheric moisture in recent years have been analyzed. It is established that under the conditions of hemodern climates ince the mid-80s of the twentieth century the rehas been a steady in crease in the annual amount of precipitation throughout the Volyn region, which leads to a change in the environmental environment of the formation of the water regime of soils of different granulometric composition. Atmospheric precipitation is a source of replenish men to moisture in the soil, causing water availability of plants. The amount of atmospheric precipitation and the mode of their fallout are of ten the cause of unfavourable conditions in crop production, horticulture, and forestry. Conditions of atmospheric humidification in the vegetation period are characterized. The changes in the amount of precipitation during the growing season in different time slices are analyzed based on the data of instrumental observations and published data of the late 50 of the last century and the beginning of the 21 century in the Agro-climatic reference books. Hydrothermal coefficient of Selyaninov is calculated and its spatial and temporal differences are established. For the first time, the manifestation of climatic changes in the study area and the regional features of the dynamics of atmospheric humidification are shown. The increase in the annual amount of precipitation and its distribution in the warm period of the year in creases the risks of intensifying soil degradation, and therefore the research can be widely used in the study of changes inwater regime and the determination of moisture sources in the soils of the Volyn region. There sultsof the study will be useful for the practice of plant growing and horti culture in agriculture, as well as for forestry, protected areas, which are the canters for the conservation of Polissya biodiversity. Key words: precipitation, long-term dynamics, global and regional climate changes, vegetation period, hydrothermal coefficient of Selyaninov, dry period duration.

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Hail data analyses

International Journal of Horticultural Science ◽

10.31421/ijhs/15/4/850 ◽

2009 ◽

Vol 15 (4) ◽

Cited By ~ 1

Author(s):

K. Szentteleki ◽

M. Gaál ◽

M. Ladányi

Keyword(s):

Vegetation Period ◽

Data Analyses ◽

Time Period ◽

Monthly Distribution ◽

Term Data

Long term data of hail events of three meteorological stations (Budapest, Debrecen and Szeged) were investigated. The hail event frequencies show significant differences in the time period 1901–2000 when the first and the second half of the century are compared. The frequencies of hail events are higher in the first half of the century in case of Debrecen and Szeged while it is higher in the second 50 years for Budapest. None of the frequencies of hail events in between 2001–2008 are significantly higher, though the average of precipitation fell during these events is higher except for Szeged. We have found that the results about the monthly distribution of hail events differ from the ones in the literature; the ratio of hail events is significantly less in the vegetation period.

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Hydrogeological responses in tropical mountainous springs

Memorias del I Congreso Internacional de Ciencias Exactas y Naturales ◽

10.15359/cicen.1.37 ◽

2019 ◽

Author(s):

Ricardo Sánchez-Murillo

Keyword(s):

Costa Rica ◽

Isotope Composition ◽

Central Valley ◽

Distribution Functions ◽

Geochemical Composition ◽

Transit Times ◽

Management Plans ◽

Best Fit ◽

Term Data

This study presents a hydrogeochemical analysis of spring responses (2013-2017) in the tropical mountainous region of the Central Valley of Costa Rica. The isotopic distribution of δ18O and δ2H in rainfall resulted in a highly significant meteoric water line: δ2H = 7.93×δ18O + 10.37 (r2=0.97). Rainfall isotope composition exhibited a strong dependent seasonality. The isotopic variation (δ18O) of two springs within the Barva aquifer was simulated using the FlowPC program to determine mean transit times (MTTs). Exponential-piston and dispersion distribution functions provided the best-fit to the observed isotopic composition at Flores and Sacramento springs, respectively. MTTs corresponded to 1.23±0.03 (Sacramento) and 1.42±0.04 (Flores) years. The greater MTT was represented by a homogeneous geochemical composition at Flores, whereas the smaller MTT at Sacramento is reflected in a more variable geochemical response. The results may be used to enhance modelling efforts in central Costa Rica, whereby scarcity of long-term data limits water resources management plans.

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DROUGHT OCCURRENCE UNDER LITHUANIAN CLIMATIC CONDITIONS

Proceedings of the 7th International Scientific Conference Rural Development 2015 ◽

10.15544/rd.2015.059 ◽

2015 ◽

Cited By ~ 1

Author(s):

Laima TAPARAUSKIENĖ ◽

Veronika LUKŠEVIČIŪTĖ

Keyword(s):

Meteorological Data ◽

Standardized Precipitation Index ◽

Vegetation Period ◽

Climatic Conditions ◽

Precipitation Record ◽

Calculation Step ◽

Drought Conditions ◽

The Standardized Precipitation Index ◽

June July

This study provides the analysis of drought conditions of vegetation period in 1982-2014 year in two Lithuanian regions: Kaunas and Telšiai. To identify drought conditions the Standardized Precipitation Index (SPI) was applied. SPI was calculated using the long-term precipitation record of 1982–2014 with in-situ meteorological data. Calculation step of SPI was taken 1 month considering only vegetation period (May, June, July, August, September). The purpose of investigation was to evaluate the humidity/aridity of vegetation period and find out the probability of droughts occurrence under Lithuanian climatic conditions. It was found out that according SPI results droughts occurred in 14.5 % of all months in Kaunas region and in 15.8 % in Telšiai region. Wet periods in Kaunas region occurred in 15.8 %, and in Telšiai region occurrence of wet periods was – 18.8 % from all evaluated months. According SPI evaluation near normal were 69.7 % of total months during period of investigation in Kaunas and respectively – 65.5 % in Telšiai. The probability for extremely dry period under Lithuania climatic conditions are pretty low – 3.0 % in middle Lithuania and 2.4 % in western part of Lithuania.

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The generalized regularities of damageability and integrity in estimations of the endurance in conditions of variability of loading regimes

Industrial laboratory Diagnostics of materials ◽

10.26896/1028-6861-2019-85-9-61-65 ◽

2019 ◽

Vol 85 (9) ◽

pp. 61-65

Author(s):

N. A. Makhutov

Keyword(s):

Life Time ◽

Cyclic Strength ◽

Laboratory Diagnostics ◽

Methodological Issues ◽

Break Points ◽

Number Of Cycles ◽

Cyclic Damage ◽

Damage Summation ◽

Temperature Factors

We consider and analyze general methodological issues regarding the strength and endurance (life-time) of the materials and structure elements under a combined effect of various force, deformation and temperature factors. The Journal "Zavodskaya laboratoriya. Diagnostika materialov" (Industrial laboratory. Diagnostics of materials) has launched systematic publications on this problematic since 2018. For many decades, domestic and foreign laboratory studies have gleaned to a traditional methodology for obtaining initial curves of the long-term and cyclic strength that related the breaking stresses with time or number of cycles. These curves, with the characteristic sections and break points, separating the areas of elastic and inelastic (plastic strain or creep strain) strain, are used in analysis of long-term and cyclic damage. Using the elementary linear law of damage summation, it is possible to calculate at a first approximation the strength and endurance under varying conditions of loading. Stepping up the requirements to the accuracy of calculations necessitates a transition from force fracture criteria (at stresses a) to deformation criteria (in elastic and inelastic deformations e). Thus, it becomes possible to construct and use a unified expression for the curve of the long-term cyclic fracture (taking into account the temporal x and cyclic N factors) and a long-term cyclic damage. With such approach it is possible to remain the linear law of damage summation though those damages are obviously nonlinear. The goal of the study is to continue and support the discussion of the most complex problems of a comprehensive assessment of the strength, resource, survivability and safety of high-risk engineering equipment within the journal pages.

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Morphometric studies of artemia males from different populations of the Altai region

Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries) ◽

10.33920/sel-09-2007-03 ◽

2020 ◽

pp. 28-38

Author(s):

L. Vesnina ◽

G. Lukerina ◽

T. Ronzhina ◽

A. Savos’kin ◽

D. Surkov

Keyword(s):

Sexual Dimorphism ◽

Hydrogen Index ◽

Morphometric Parameters ◽

Altai Region ◽

Sexual Structure ◽

Different Populations ◽

Artemia Population ◽

Term Data ◽

Brine Salinity

The long-term data from morphometric studies of Artemia males from bisexual and parthenogenetic populations from hyperhaline reservoirs of the Altai region (Bolshoe Yarovoe Lake, Maloe Shklo Lake, and the Tanatar Lakes system) is analyzed in this paper. The description of signs of sexual dimorphism and sexual structure in different populations is given. The influence of brine salinity and hydrogen index on morphometric parameters of males was analyzed. There are differences in the sexual structure of the Artemia population: in the lakes Maloe Shklo and the thanatar system, the populations are bisexual (the share of males is 28.5 — 75.0 %), in the lake Bolshoe yarovoe — parthenogenetic (the share of males on average does not exceed 3 %). At the same time, sexual dimorphism is typical for both types of populations: females are larger than males, males have a larger head (the distance between the eyes is greater by 15.5 %, the diameter of the eye is 26.1 %, the length of the antenna is 22.3 %) and a larger number of bristles (36.1 %). The greatest variability is observed in the parameters of the Furka structure associated with the salinity of water by feedback and the pH — line indicator. Significant differences between the samples of males were revealed. The largest number of significant differences in morphometric indicators was found between samples of males from bisexual populations (lake thanatar and lake Maloe Shklo), the smallest — between males from the parthenogenetic population of lake Bolshoe yarovoe and males from lake Maloe Shklo.

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Information technology. Digitally recorded media for information interchange and storage. Test method for the estimation of lifetime of optical disks for long-term data storage

10.3403/30341531u ◽

2017 ◽

Keyword(s):

Information Technology ◽

Data Storage ◽

Test Method ◽

Storage Test ◽

Optical Disks ◽

Information Interchange ◽

And Storage ◽

Term Data

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Information technology. Digitally recorded media for information interchange and storage. Test method for the estimation of lifetime of optical disks for long-term data storage

10.3403/30341531 ◽

2017 ◽

Keyword(s):

Information Technology ◽

Data Storage ◽

Test Method ◽

Storage Test ◽

Optical Disks ◽

Information Interchange ◽

And Storage ◽

Term Data

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Regional Climate Scenarios for use in Nordic Water Resources Studies

Hydrology Research ◽

10.2166/nh.2003.0014 ◽

2003 ◽

Vol 34 (5) ◽

pp. 399-412 ◽

Cited By ~ 19

Author(s):

M. Rummukainen ◽

J. Räisänen ◽

D. Bjørge ◽

J.H. Christensen ◽

O.B. Christensen ◽

...

Keyword(s):

Water Resources ◽

Climate Models ◽

Global Climate ◽

Regional Climate ◽

Regional Climate Models ◽

Climate Projections ◽

Climate Scenarios ◽

Soil Frost ◽

Nordic Region ◽

Regional Climate Projections

According to global climate projections, a substantial global climate change will occur during the next decades, under the assumption of continuous anthropogenic climate forcing. Global models, although fundamental in simulating the response of the climate system to anthropogenic forcing are typically geographically too coarse to well represent many regional or local features. In the Nordic region, climate studies are conducted in each of the Nordic countries to prepare regional climate projections with more detail than in global ones. Results so far indicate larger temperature changes in the Nordic region than in the global mean, regional increases and decreases in net precipitation, longer growing season, shorter snow season etc. These in turn affect runoff, snowpack, groundwater, soil frost and moisture, and thus hydropower production potential, flooding risks etc. Regional climate models do not yet fully incorporate hydrology. Water resources studies are carried out off-line using hydrological models. This requires archived meteorological output from climate models. This paper discusses Nordic regional climate scenarios for use in regional water resources studies. Potential end-users of water resources scenarios are the hydropower industry, dam safety instances and planners of other lasting infrastructure exposed to precipitation, river flows and flooding.

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