Russian Meteorology and Hydrology最新文献_第9页

Long-term Changes in the Characteristics of Growing Seasons in the Cis-Ural Region due to Climate Change 气候变化导致的顺乌拉尔地区生长季节特征的长期变化

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100059

V. A. Shklyaev

{"title":"Long-term Changes in the Characteristics of Growing Seasons in the Cis-Ural Region due to Climate Change","authors":"V. A. Shklyaev","doi":"10.3103/s1068373923100059","DOIUrl":"https://doi.org/10.3103/s1068373923100059","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The peculiarities of the variations in the growing season characteristics in the Cis-Ural region over the 20th and early 21st centuries were studied. The information on average daily air temperature and precipitation at four weather stations was used. It was found that, against the background of a general increase in air temperature, there was a positive trend in the length of growing seasons due to the changes in the dates of spring warming and autumn cooling. Starting from 1936, three periods of changes in the growing season length were revealed, and the last one, which started in 1990, has been the longest. The sum of active temperatures, as well as total precipitation, insignificantly changed during the study period, which was confirmed by a small positive trend. The average daily temperature in growing seasons has almost not changed over 85 years. The comprehensive assessment of the weather conditions affecting the growth of grain crops was performed based on the analysis of the hydrothermal coefficient. The coefficient was used to estimate the frequency of droughts having different intensity. Some increase in the coefficient, as well as the positive trends in the amount of precipitation (especially in the Perm krai), indicate the improvement of the conditions for spring grain crop cultivation in this part of the Cis-Ural region.</p>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139413170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Balance Approach for Evaluating the Carbon Stock and the Components of Carbon Footprint on Croplands in Russian Regions 评估俄罗斯地区耕地碳储量和碳足迹组成部分的平衡法

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100011

A. S. Strokov, A. A. Romanovskaya, V. Yu. Vertyankina, I. Yu. Ryabov

引用次数: 0

Modern Changes in the Agroclimatic Potential of the Central Chernozem Region 切尔诺泽姆中部地区农业气候潜力的现代变化

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100035

L. M. Akimov, E. L. Akimov

引用次数: 0

Agroclimatic Characteristics of Agricultural Land in the Siberian Federal District in Changing Climate 气候变化下西伯利亚联邦区农田的农业气候特征

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100072

I. V. Kuzhevskaya, V. P. Gorbatenko, O. V. Nosyreva, M. A. Volkova, O. E. Nechepurenko, V. V. Chursin, N. N. Chered’ko

{"title":"Agroclimatic Characteristics of Agricultural Land in the Siberian Federal District in Changing Climate","authors":"I. V. Kuzhevskaya, V. P. Gorbatenko, O. V. Nosyreva, M. A. Volkova, O. E. Nechepurenko, V. V. Chursin, N. N. Chered’ko","doi":"10.3103/s1068373923100072","DOIUrl":"https://doi.org/10.3103/s1068373923100072","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The analysis of the agroclimatic resources of the Siberian Federal District in the warming climate has revealed statistically significant (most pronounced in the last two decades) increasing trends in the sum of active temperatures and the growing-season length due to the earlier (by 5–7 days) dates of the stable 5°C crossing in spring and the later ones (by 2–4 days) in autumn. In most of the territory, the changes in total precipitation are statistically insignificant, except for a few stations. The frequency of late and early frosts has not changed and remained within the climatological normal. The maximum growth of green biomass, which was estimated by the NDVI (Normalized Difference Vegetation Index) values, is facilitated by an early beginning of the growing season and a rapid transition to the period of active vegetation. The influence of meteorological conditions on the growth is significant at the beginning of the growing season and is quickly leveled by mid-summer.</p>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139413167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agroclimatic Assessment of the Crimea and Donbass Territories for the Rational Placement of Vineyards in Changing Climate: A Case Study for Sevastopol and Artemovsk 克里米亚和顿巴斯地区农业气候评估，以便在不断变化的气候中合理布局葡萄园：塞瓦斯托波尔和阿尔乔莫夫斯克案例研究

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100060

E. V. Vyshkvarkova, E. N. Voskresenskaya

引用次数: 0

Changes in Hydrothermal Conditions in Southern Siberia in 1950–2020 and Their Relation to Large-scale Circulation Processes 1950-2020 年西伯利亚南部热液条件的变化及其与大尺度环流过程的关系

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-10 DOI: 10.3103/s1068373923100096

N. N. Voropay, A. A. Ryazanova

{"title":"Changes in Hydrothermal Conditions in Southern Siberia in 1950–2020 and Their Relation to Large-scale Circulation Processes","authors":"N. N. Voropay, A. A. Ryazanova","doi":"10.3103/s1068373923100096","DOIUrl":"https://doi.org/10.3103/s1068373923100096","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper presents the dynamics of the hydrothermal coefficients characterizing agroclimatic resources on the territory of Siberia within the coordinates of 50°–65° N, 60°–120° E during modern climate change. The intensity, frequency, and duration of adverse weather phenomena for agriculture (the atmospheric droughts and moisture excess conditions) are analyzed. The Ped’ drought index (<span>(S)</span>) and the standardized precipitation evapotranspiration index (SPEI) calculated from the data of 134 weather stations and the ERA5 reanalysis are used as an indicator. In Eastern Siberia and in the west of the analyzed territory, there is an increase in aridity (a trend is 0.2–0.5 per decade). Northern regions of Kazakhstan, the Sayan Mountains, and the West Siberian Plain were characterized by a relative stability of hydrothermal conditions in 1950–2020 (statistically significant changes are not revealed). A direct linear dependence of hydrothermal conditions on large-scale circulation processes have been not detected for most cases. The greatest number of statistically significant correlation coefficients has been obtained for the drought index <span>(S)</span> and the SCAND (Scandinavia teleconnection pattern) index.</p>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139413133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using the Particle Swarm Optimization (PSO) Algorithm for Baseflow Separation and Determining the Trends for the Yesilirmak River (North Turkey) 使用粒子群优化（PSO）算法分离基流并确定耶希尔河（土耳其北部）的变化趋势

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-01 DOI: 10.3103/s1068373924010060

{"title":"Using the Particle Swarm Optimization (PSO) Algorithm for Baseflow Separation and Determining the Trends for the Yesilirmak River (North Turkey)","authors":"","doi":"10.3103/s1068373924010060","DOIUrl":"https://doi.org/10.3103/s1068373924010060","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Estimation of baseflow is a complex hydrographic task. Baseflow techniques and coefficients vary from basin to basin, stream to stream, and year to year. In this study, meta-heuristic optimization is used to automatically identify baseflow. The Particle Swarm Optimization (PSO), a meta-heuristic optimization approach, is chosen. The constraint and cost functions were determined using the PSO algorithm, Lyne and Hollick techniques, and a computer application. Over the period 1980–2015, the data were collected at the Kale station in the Yesilirmak River basin to validate the study model. The results show that the hydrographs and baseflow dividing line were separated effectively. It has also been revealed that the PSO has a high speed as well as a high level of precision. In the research, in addition to the baseflow separation, the hydrograph, baseflow, and ratio of the baseflow to the streamflow at the station No. 1402 were assessed using the Mann–Kendall test and Innovative Trend Test (ITA), and as a result, their trends have been found. By the use of both of these methods, it has been shown that all parameters have an unfavorable trend. In addition, the research came to some other significant conclusions, such as the fact that the baseflow declines in tandem with the flow values and that the baseflow rates are low in years with high peak values of the hydrograph.</p> </span>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140573981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Groundwater Flow for the Central Eastern Sayan Rivers 中东部萨彦河地下水流量估算

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-01 DOI: 10.3103/s1068373924010096

引用次数: 0

Assessment of Climate Change Impacts on the Precipitation and Temperature: A Case Study on Krishna River Basin, India 气候变化对降水和气温的影响评估：印度克里希纳河流域案例研究

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2024-01-01 DOI: 10.3103/s1068373924010084

{"title":"Assessment of Climate Change Impacts on the Precipitation and Temperature: A Case Study on Krishna River Basin, India","authors":"","doi":"10.3103/s1068373924010084","DOIUrl":"https://doi.org/10.3103/s1068373924010084","url":null,"abstract":"<span> <h3>Abstract</h3> <p>In this study, the statistical downscaling model (SDSM) is employed for downscaling the precipitation (PREC), maximum temperature (<span> <span>(T_{max})</span> </span>), and minimum temperature (<span> <span>(T_{min})</span> </span>) over the Krishna River Basin (KRB). The Canadian Earth System Model, version 2 (CanESM2) General Circulation Model (GCM) outputs were considered as predictor variables. First, the SDSM was calibrated using the data for a 30-year period (1961–1990) and subsequently validated with the data for a 15-year period (1991–2005). Upon perceiving a satisfactory performance, the SDSM was then used for projecting the predictand variables (PREC, <span> <span>(T_{max})</span> </span>, and <span> <span>(T_{min})</span> </span>) for the 21st century considering three representative concentration pathway (RCP) scenarios viz. RCP2.6, RCP4.5, and RCP8.5. The future period was divided into three 30-year time slices named epoch-1 (2011–2040), epoch-2 (2041–2070), and epoch-3 (2071–2100), respectively. The period 1976–2005 was considered as baseline period and all the future results were compared with this data. The results were analysed at various temporal scales, i.e., monthly, seasonal, and annual. The study has reveals that the KRB is going to become wetter during all the seasons. The results are discussed for the worst-case scenario, i.e., RCP8.5 epoch-3. The average annual maximum and minimum temperature is expected to increase. The extreme event analysis is also carried out considering the 90th and 95th percentile values. It is noticed that the extreme (90th and 95th percentiles) are going to increase. There are extreme events that go beyond extreme values. The outcome of this study can be used in flood modeling for the KRB and also for the modeling of future irrigation demands along with the planning of optimal irrigation in the KRB culturable area.</p> </span>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140573470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heat and Moisture Ratio in Agricultural Regions of Southern Russia in Summer under the Conditions of Climate Change 气候变化条件下俄罗斯南部农业区夏季的热量和水分比

IF 0.7 4区地球科学

Russian Meteorology and Hydrology Pub Date : 2023-12-28 DOI: 10.3103/s1068373923090066

T. B. Titkova, A. N. Zolotokrylin, M. A. Tarasova

{"title":"Heat and Moisture Ratio in Agricultural Regions of Southern Russia in Summer under the Conditions of Climate Change","authors":"T. B. Titkova, A. N. Zolotokrylin, M. A. Tarasova","doi":"10.3103/s1068373923090066","DOIUrl":"https://doi.org/10.3103/s1068373923090066","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>It is revealed that there was a significant increase in the Bowen ratio in the Volga, Southern, and North Caucasian federal districts in the second half of the 20th century–beginning of the 21st century. This indicates a strengthening of sensible heat flux and a reduction of latent heat flux in the heat and moisture balance. These changes are caused by a significant temperature rise, especially in the south of European Russia, with a regional decrease in precipitation. The Bowen ratio is inversely proportional to precipitation and NDVI and directly proportional to temperature. In the steppe zone represented by the Volga, Southern, and North Caucasian federal districts the long periods of predominance of the Bowen ratio anomalies of a certain sign can be distinguished for June and July: the positive ones in the 1950s and until the mid-1960s, the negative ones after that until the early 2000s, and the positive ones since the middle of the first decade of the 21st century. Since the second decade of the 21st century, the positive anomalies of the Bowen ratio have become more frequent in some years and have exceeded the standard deviation. An increase in the contribution of heat to the heat and moisture exchange balance led to a degradation of vegetation conditions in the Volga, Southern, and North Caucasus federal districts. In the south of the Siberian Federal District, the fluctuation of the Bowen ratio anomalies is less pronounced than in European Russia, which suggests some stability of heat and moisture supply in summer over the past 70 years.</p>","PeriodicalId":49581,"journal":{"name":"Russian Meteorology and Hydrology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139057387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0