scholarly journals Comparative Analysis of the Rosgidromet and «Mayma» Autonomous Gauging System Hydro/meteorological Observations in the Mayma River Basin (Gorniy Altay)

2018 ◽  
Author(s):  
Keyword(s):  
Comparative Analysis ◽  
Water Level ◽  
River Basin ◽  
Air Temperature ◽  
Precipitation Amount ◽  
Meteorological Station ◽  
Observation Data ◽  
Operative Data ◽  
Meteorological Observations ◽  
The Village

The paper contains the comparative analysis results of the rows of hydro/meteorological observations over 2017 in the Mayma River basin according to the Rosgidromet data (a hydro/post in the village of Mayma and a meteorological station in the village of Kyzyl-Ozek) and an autonomous gauging system (AK «Mayma») developed in Russian Academy of Sciences Siberian Branch Institute for Climatic and Ecological Systems Monitoring. We have found that in spite of the distance between the observation points («Mayma» is 4 km from the Kyzyl-Ozek meteorological station and 22 km from the Mayma village hydro/post) dynamics of changes of the Mayma River water level, air temperature and precipitation amount according to Rosgidromet data and the AK «Mayma» data agrees. We established a close correlation between rows of daily observations of the water level and air temperature (correlation indices 0.996 and 0.929, respectively). Correlation between observation rows of daily precipitation amount is weaker (correlation index 0.713), this is caused by spatial variations of precipitation distribution. Based on the conducted investigation results, we have made a conclusion about representativeness of the AK «Mayma» observation data. Reliability of observations, autonomous character of operations and possibility to transmit the observation operative data over some distance make «Mayma» gauging system a suitable instrument for the Mayma River basin hydro/meteorological status monitoring. It is possible to use the obtained hydro/meteorological information to forecast the river level regime and to provide operative data for executive bodies, units of Ministry of Emergencies and the population.

scholarly journals MONITORING THE TEMPERATURE OF THE SURFACE LAYER OF THE ATMOSPHERE FROM 2011 TO 2015 IN BEZENGI GORGE

2019 ◽  
Author(s):  
Ж.Ч. Бозиева ◽  
Х.М. Газаев ◽  
Э.А. Агоева
Keyword(s):  
Surface Layer ◽  
Comparative Analysis ◽  
Air Temperature ◽  
Atmospheric Surface Layer ◽  
Weather Conditions ◽  
Meteorological Station ◽  
The Caucasus ◽  
Mountainous Regions ◽  
Treatment Data ◽  
Geographical Position

Климат определенной местности нельзя рассматривать изолированно. Особенности климата отдельных регионов это преломление общих закономерностей в конкретной обстановке. Так, погодные условия высокогорных об ластей Кавказа зависят от высотной поясности, циркуляции атмосферы, географического положения, особенностей растительного покрова и других факторов. Результатами данного исследования являются обработка пятилетних дан ных (с 2011 2015 гг.) по температуре воздуха приземного слоя атмосферы и их сравнительный анализ. Данные получены с помощью автоматической метеостанции, расположенной на высоте 1700 м н. у. м. в Безенгийском ущелье. В ходе ис следований было выявлено, что среднегодовая температура приземного слоя атмосферы за 2014 г. была выше таковой в другие годы в 1,5 2,2 раза. The Climate of an area cannot be considered isolated. The climate of certain regions is the refraction of the General laws in a speci c situation. So weather conditions in high mountainous regions of the Caucasus depend on altitudinal zonation circulation of the atmosphere, geographical position, peculiarities of the vegetation cover and other factors. The results of this study are veyears treatment data on the air temperature in the atmospheric surface layer and their comparative analysis. These results obtained at the meteorological station located in Bezengi valley, Kabardino Balkar highmountain reserve.

scholarly journals Sediment production in flysch badlands: A case study from Slovenian Istria

2020 ◽  
Vol 60 (1) ◽  
Author(s):  
Gregor Kovačič
Keyword(s):  
Air Temperature ◽  
Precipitation Amount ◽  
Meteorological Station ◽  
The Other ◽  
Average Wind Speed ◽  
Sediment Production ◽  
Average Wind ◽  
Erosion Pins ◽  
Minimum Air Temperature

This article deals with the results of seven years of measurements of sediment release from the flysch badlands in the Rokava River headwaters. Measurements of sediment production were carried out in erosion plots, and measurements of cliff (or rockwall) retreat using erosion pins. Selected meteorological time series from the Portorož Airport meteorological station were included in the analysis. The calculation showed that from 2008 to 2015 (149 measurements) sediment production was 36 kg/m² per year and the flysch cliff retreated by 146 mm or 21 mm per year. The amount of sediment produced is moderately positively correlated with the number of days between successive measurements (r = 0.51), with a recorded daily transition of air temperature over/below 0 °C (r = 0.56) and slightly more weakly correlated with the precipitation amount (r = 0.45). On the other hand, the amount of sediment produced has a low negative correlation with average air temperature (r = −0.29) and average minimum air temperature (r = −0.30). However, no statistically significant correlation was calculated between the amount of sediment produced and average wind speed.

scholarly journals About the features of the time course of the average annual air temperature in the territory of the Debed river basin (Armenia)

2020 ◽  
Vol 223 ◽  
pp. 03009
Author(s):  
Varduhi Margaryan ◽  
Gennady Tsibulskii ◽  
Ksenia Raevich
Keyword(s):  
River Basin ◽  
Air Temperature ◽  
Time Course ◽  
Data Series ◽  
Observation Data ◽  
Air Temperatures ◽  
Daily Data ◽  
Long Term Observation ◽  
Surface Air Layer

The article examines the features of the time course of the average annual air temperature in the Debed river basin in Armenia. As a starting material, we used daily data of actual observations of the temperature of the surface air layer for a year in the Debed river basin. The study was carried out at 6 meteorological stations in the Debed river basin based on long-term observation data series from 1930 to the present (2018). Analysis of the trend lines of temporal changes in air temperatures shows that at all meteorological stations currently operating on the territory of the basin, there is mainly a tendency for an increase in temperatures of annual values.

scholarly journals The tendencies of air temperature and precipitation in the mountainous part of the Prut River basin for the years 2007–2009

2012 ◽  
Vol 2 (40) ◽  
pp. 237-244
Author(s):  
P. Shuber ◽  
V. Berezyak
Keyword(s):  
Climate Change ◽  
Key Words ◽  
River Basin ◽  
Air Temperature ◽  
Meteorological Station ◽  
Temperature And Precipitation ◽  
Prut River

Based of the Pozhyzhevs’ka and Yaremche meteorologie Stations data, the air temperature climatic norm and the precipitation have been determinated for 1961–1990 years. The deviation in comparison with the average air temperature and precipitation the 2007–2009 years from their climatic norm for the Chornohora Landscape of the Highland Pasture and the Liubizhnia Landscape of the Lowland-LowEarth-Lump physico-geographic areas of the Ukrainian Carpathians in the River Prut Basion has been provided for the tendencies analysis of climate change in the study area. The norm climatic value for the air temperature overrun on 1.3 °С at Chornohora Landscape (Pozhyzhevs’ka meteorologic Station) and 1.6 °С at Liubizhnia Landscape (Yaremche meteorological Station) has been identified for period 2007–2009. The overrun of the norm precipitation consist 383.6 mm in the first and 155.2 mm in the second study areas. Key words: precipitation, air temperature, climatic norm, dynamics, Landscape

scholarly journals Thornthwaite Models for Estimating Potential evapotranspiration in Medan City

2021 ◽  
Vol 912 (1) ◽  
pp. 012095
Author(s):  
N Anggraini ◽  
B Slamet
Keyword(s):  
Land Use ◽  
Soil Moisture ◽  
Water Balance ◽  
Air Temperature ◽  
Potential Evapotranspiration ◽  
Meteorological Station ◽  
Temperature Data ◽  
Monthly Temperature ◽  
Region I ◽  
Meteorological Observations

Abstract Evapotranspiration plays a big role in the hydrology process. Potential Evapotranspiration (PET) always keeps soil moisture available, although an amount of water evaporates through evaporation and transpiration. The Thornthwaite equation uses air temperature and latitude from meteorological observations for estimating PET. Medan City is one of the biggest cities in Indonesia that have a problem with land-use change that affected water balance. This study is to estimate the PET and to learn the water balance in Medan City. The monthly temperature data for the period 2011-2020 is collected from three meteorological stations for estimating PET using the Thornthwaite equation. The highest monthly temperature is in Belawan Maritime Meteorological Station yet the lowest rainfall. The trends of PET depend on the month. The highest PET in Jan.-Apr. and Sep.-Dec. are in Belawan Maritime Meteorological Station, while the highest PET in May-Aug. is in Indonesia Agency for Meteorology Climatology and Geophysics Region I Medan. The P-PET has shown negative and positive values. The lowest P-PET is found in Belawan Maritime Meteorological Station in March and the highest P-PET is found in Indonesia Agency for Meteorology Climatology and Geophysics Region I Medan in October.

scholarly journals Mapping flood inundation areas over the lower part of the con river basin using sentinel 1A imagery

2020 ◽  
Vol 42 (3) ◽  
Author(s):  
Nguyen Thien Phuong Thao ◽  
Tran Tuan Linh ◽  
Nguyen Thi Thu Ha ◽  
Pham Quang Vinh ◽  
Nguyen Thuy Linh
Keyword(s):  
Time Series ◽  
Water Level ◽  
River Water ◽  
River Basin ◽  
Meteorological Station ◽  
Processing Method ◽  
Flood Inundation ◽  
Strong Correlations ◽  
Inundation Area ◽  
Flood Dynamics

This study aims to determine a processing method for rapid flood inundation and potential flood-damaged area mapping in the lower part of the Con River basin, a region most vulnerable to floods in Vietnam, using Sentinel 1A (S1A) image. A threshold from -23 dB to -12 dB of the VV band was identified for extracting the water areas from S1A image and was applied in 28 S1A scenes to identify flood dynamics. The time-series map of flood inundation areas during the period of December 2017 to December 2018 evidenced Tuy Phuoc and northern part of An Nhon as the districts most inundated by the 2017 and 2018 floods, which is consistent to the local records. The round-year trend of total flood inundation area shows strong correlations with the Con river water level (R = 0.75) and local precipitation (R = 0.64) measured in Binh Nghi hydro-meteorological station confirming the appropriateness of the study method and the capability of S1A data in monitoring floods.

scholarly journals Klimatska obilježja otoka Palagruže, Hrvatska

Geoadria ◽  
2017 ◽  
Vol 8 (1) ◽  
pp. 39
Author(s):  
Živko Trošić ◽  
Dražen Jašić ◽  
Vinko Marinković
Keyword(s):  
Air Temperature ◽  
Precipitation Amount ◽  
Meteorological Station ◽  
Rank Statistic ◽  
Climatic Data ◽  
Air Temperatures ◽  
The Mean ◽  
Instrumental Period ◽  
C 30 ◽  
Minimum Air Temperature

The paper presents a brief review of contemporary research on climatic features of Palagruža Island, both in the pre-instrumental and instrumental period. The analysis was made upon climatic data provided by the meteorological station of Palagruža. For comparison purposes, data from the station in Split-Marjan was used, covering the standard climate period 1961-1990. The results show, among other things, that there is a decreasing trend of annual mean maximum air temperatures for 0.37 °C/30 years, average air temperature for 0.05 °C/30 years, and the mean minimum air temperature for 0.04 °C/30 years. There is a decreasing trend of annual mean of precipitation amount for 62 mm/30 years. Spearman rank statistic shows that neither of the trends noted above is statistically significant at 0.05 level (two-tailed t-test) 

scholarly journals Responses of snowmelt runoff to climatic change in an inland river basin, Northwestern China, over the past 50a

2010 ◽  
Vol 7 (1) ◽  
pp. 493-528 ◽  
Author(s):  
J. Wang ◽  
H.-Y. Li ◽  
X.-H. Hao
Keyword(s):  
Climatic Change ◽  
River Basin ◽  
Air Temperature ◽  
Heihe River Basin ◽  
Northwestern China ◽  
Heihe River ◽  
Observation Data ◽  
Mountainous Region ◽  
Snowmelt Runoff ◽  
The Past

Abstract. The spatial and temporal variations of snowcover distribution, and snowmelt runoffs are considered as sensitive indicators for climatic change. The purpose of this paper is to analyze and forecast the responses of snowmelt runoff to climate change. The upstream of Heihe River Basin in Northwestern China was chose as the representative catchments, and the observation data of the meteorological and hydrological stations were utilized to analyze the status and the regularity for the climatic change from 1956 to 2008. Moderate Resolution Imaging Spectroradiometer (MODIS) data were used to develop an optimized technology for snow mapping in the mountainous region. Snowmelt Runoff Model (SRM) was chose to simulate snowmelt runoff and scenario forecast the change trend of snowmelt runoff in catchment scale for the mountainous region in Northwestern China. The results show that climatic warming was apparent in the upstream of Heihe River Basin in the past 50a. Annual average air temperature of three different weather stations located in the basin has increased 2.1 °C, 2.6 °C and 2.9 °C, respectively. The snowmelt runoff has increased obviously from 1970 to present. With different warming climate scenarios, the results by SRM simulating showed that the first occurred time of snowmelt runoff shift ahead and discharge become larger as responses of snowmelt runoff to air temperature increasing, and the influence of temperature rising on average discharge of the whole snow season is not obvious. On the other hand, simulated discharge showed a marked increase trend with the increase of precipitation. And, the simulated results show that the increase of precipitation almost has no influence on the occurring time of snowmelt runoff.

scholarly journals Microclimatic features of landscapes in the territory with a sparse network of meteorological observations

2021 ◽  
Vol 885 (1) ◽  
pp. 012037
Author(s):  
O V Vasilenko ◽  
N N Voropay
Keyword(s):  
Air Temperature ◽  
Temperature Regime ◽  
Automatic Monitoring ◽  
Observation Data ◽  
Open Surface ◽  
Sparse Network ◽  
Temperature And Humidity ◽  
Meteorological Observations ◽  
Radiation Cooling

Abstract Automatic monitoring of air temperature and humidity in the mountain-depression landscapes of the Tunka depression has been organized. The results of the analysis of observation data for 10 years showed significant differences in the temperature regime in different landscapes. The sites can be divided into three groups – the slopes of the depression, pine- herbaceous landscapes, and the lacustrine-bog complex of the central part. The average annual air temperature at all sites is negative and vary in range -0.7 … -2.1°C. Vegetation has the greatest influence on microclimatic characteristics. The maximum contrasts in the temperature regime of the air throughout the year are observed in open areas with cloudless skies. In winter, this is explained by radiation cooling, and in summer – by the heating of the open surface in the daytime. In this case, not only the daily amplitude of air temperature in the open areas increases, but also the largest contrasts between the open and closed areas are observed.

scholarly journals Process-Based Modeling of the High Flow of a Semi-Mountain River under Current and Future Climatic Conditions: A Case Study of the Iya River (Eastern Siberia)

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1042
Author(s):  
Andrey Kalugin
Keyword(s):  
Water Level ◽  
River Basin ◽  
21St Century ◽  
Residential Buildings ◽  
High Flow ◽  
Peak Discharge ◽  
Future Climate ◽  
Future Climate Change ◽  
Generation Model ◽  
Annual Peak

The purpose of the study was to analyze the formation conditions of catastrophic floods in the Iya River basin over the observation period, as well as a long-term forecast of the impacts of future climate change on the characteristics of the high flow in the 21st century. The semi-distributed process-based Ecological Model for Applied Geophysics (ECOMAG) was applied to the Iya River basin. Successful model testing results were obtained for daily discharge, annual peak discharge, and discharges exceeding the critical water level threshold over the multiyear period of 1970–2019. Modeling of the high flow of the Iya River was carried out according to a Kling–Gupta efficiency (KGE) of 0.91, a percent bias (PBIAS) of −1%, and a ratio of the root mean square error to the standard deviation of measured data (RSR) of 0.41. The preflood coefficient of water-saturated soil and the runoff coefficient of flood-forming precipitation in the Iya River basin were calculated in 1980, 1984, 2006, and 2019. Possible changes in the characteristics of high flow over summers in the 21st century were calculated using the atmosphere–ocean general circulation model (AOGCM) and the Hadley Centre Global Environment Model version 2-Earth System (HadGEM2-ES) as the boundary conditions in the runoff generation model. Anomalies in values were estimated for the middle and end of the current century relative to the observed runoff over the period 1990–2019. According to various Representative Concentration Pathways (RCP-scenarios) of the future climate in the Iya River basin, there will be less change in the annual peak discharge or precipitation and more change in the hazardous flow and its duration, exceeding the critical water level threshold, at which residential buildings are flooded.

Sign in / Sign up

Export Citation Format

Share Document