Spatiotemporal variations of major parameters of temperature and humidity regime in the Volga Federal District

Perevedentsev, Yu. P.; Shantalinskii, K. M.; Vazhnova, N. A.

doi:10.3103/s1068373914040037

Cited by 13 publications

(6 citation statements)

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“…with maximum relative elevations occurring along the river valleys. This area of the Udmurt Republic is characterized by a temperate continental climate with annual precipitation in the range of 550-600 mm; mean annual temperatures in January and July are −12.3 and +19 • respectively (Perevedencev et al, 2014). The amount of arable lands in the Udmurt Republic slightly decreased from 38.5 % Gully erosion was studied by using two approaches.…”

Section: Methodsmentioning

confidence: 99%

Long-term monitoring of gully erosion in Udmurt Republic, Russia

et al. 2017

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Abstract. This article presents results from the long term-monitoring of gully headcut retreat rates (GHRR) between 1959 and 2015 in different parts of the Udmurt Republic and is based on the use of historical aerial photographs and field observations (measuring the distance from the gully head to a fixed reference point) ( Vanmaercke et al., 2016). It was determined that GHRR decreased from 2.4 to 0.3 m yr −1 during the 1959-1997 observation period and the 1998-2015 period, respectively. Measurements of GHRR were made once per year for most of the monitoring sites, and twice per year (after snow-melt in May, and after the rainy season, OctoberNovember) for gullies located in the eastern part of the study area that contain high proportions of arable land. 80 % of GHRR occurred during the snowmelt period (1978)(1979)(1980)(1981)(1982)(1983)(1984)(1985)(1986)(1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997), and decreased to 53 % since 1997. Spatial patterns of GHRR resulting from changing hydro-climatic factors for different regions of the Udmurt Republic, as a whole, were determined based on the analysis of long-term observations at 6 meteorological stations and 4 gauging stations. The main reason for decreasing GHRR appears to be due to reductions in winter frozen soil depth. The influence of stormwater runoff more clearly occurred within the east and north parts of the VyatkaKama interfluve, whereas higher correlations between GHRR and frozen soil depth were found for the western parts of the Republic. The most significant increases in GHRR appear to have occurred during the warm part of the year (June-July), after > 40 mm rainstorms.

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Section: Methodsmentioning

confidence: 99%

Long-term monitoring of gully erosion in Udmurt Republic, Russia

et al. 2017

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“…Using data from 15,000 meteorological stations, Dai (2006) investigated changes in humidity and temperature globally and found, among other things, that there was a trend of increasing relative humidity in the central and eastern parts of the United States, then in India and west-ern China, while other areas registered a major decrease in the period . Changes in the regime of temperature and humidity in the Federal District of the Volga were reported in the paper by Perevedentsev et al (2014), while Aleshina et al (2018) measured the same parameters on the Black Sea coast. It should be noted that air humidity is a significant meteorological element because water vapor participates directly or indirectly in many atmospheric processes.…”

Section: Humiditymentioning

confidence: 71%

Precipitation, humidity and cloudiness in Podgorica (Montenegro) during the period 1951-2018

Burić¹,

Doderović²

2019

Geographica Pannonica

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This paper presents the results of a trend analysis of three climate elements: precipitation, cloudiness and humidity. Almost the entire period of instrumental measurements (precipitation and humidity) and visual observations (cloudiness) are covered. In the observed 68-year period , the trend of annual and seasonal precipitation amounts is insignificant. Though, there is a significant decrease in the number of days with precipitation ≥ 1 mm, which implies a movement towards more arid conditions. On the other hand, the number of days with extreme rainfall ≥ 40 and 50 mm is increasing. In Podgorica, the annual statistics of days with snow cover decreases as well. There is also a decrease in the relative humidity and cloudiness, and with both elements the trend is insignificant only in the autumn season. The results of the trend calculation show that the number of gloomy days is more intensively reduced than the number of increasing bright days. In general, the results of the research show that the climate of Podgorica tends to be more arid with more extreme weather events. The climate variations happening in this city are, to small amount, caused by the urbanization process. Podgorica has the character of an urban heat island in a cooler environment, with an average annual intensity of about 0.7°C and the highest in winter (about 0.8°C). The most symptomatic indicator of urbanization is temperature, but anthropogenic heat production in the city (asphalt, constructions, increase of aerosols, etc.) also affects other climate elements. Compared to the non-urban environment, Podgorica has a higher annual rainfall of 100 mm and a lower humidity of 3%, while this difference is not noticeable in the overall cloudiness.

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“…This may be the case in the Middle Volga region for the period 1970–1990, when arable land area changes were minimal (Figure , Table ). Likewise, no clear trend in air temperature was detected during that period (Perevedencev et al ., ). However, the lack of a clear trend in the dynamics of gully density within Udmurt Republic during this period (Figure ; Table ) confirms that reductions in contributing area probably have no strong effect on the observed gully dynamics.…”

Section: Resultsmentioning

confidence: 97%

“…Average air temperatures increased on the territory of European Russia since the middle of the 1970s, including the Middle Volga region ( Figure 13A). Also air temperature during winter months increased (Perevedencev et al, 2014;Figures 13B and 13C), which promoted also an increase in soil temperatures (Park et al, 2014). This may have contributed to a significant reduction of snowmelt runoff from the tilled slopes during spring snowmelt.…”

Section: Discussionmentioning

confidence: 95%

Mapping and spatial‐temporal assessment of gully density in the Middle Volga region, Russia

Golosov

Yermolaev

Рысин

et al. 2018

Earth Surf Processes Landf

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A large‐scale mapping of gully density was carried out for the Middle Volga region of the Russian Plain (188 000 km2) based on the interpretation of aerial photographs (scale 1:17 000; surveys undertaken during 1956–1970). In addition, spatial‐temporal dynamic of gully density were assessed for some parts of the study area (the Udmurt Republic and the Mesha and Ulema River basins of Tatarstan), based on the interpretation of aerial photographs (survey 1986–1991) and high resolution satellite images (2012–2015). Information on factors potentially controlling gully formation and development were collected and a geographic information system (GIS) analysis was conducted. Results show the strong development of gullies in the study area over the 1956–1970 period with an average gully density of 0.21 km km−2. For the Udmurt region, we found that gully densities varied little in the period 1956–1986, during which the total active gully length reduced with only 2%. This period was characterized by low variable climatic conditions and a stable fraction of arable land with a relatively continuous crop rotation system. However, gully dynamics seems to have changed more strongly during recent decades. We found a strong (order of magnitude) reduction in active gully density for the period 2010–2015 as compared to 1986–1991. The main reason for this is likely the increasing winter air temperatures. This leads to a significant reduction in surface runoff during spring as a result of snowmelt. Nonetheless, in some regions (i.e. the Udmurt Republic in the taiga zone), the abandonment of arable land after 1991 likely plays a significant role. Likewise, a decline in the frequency of extreme rainfall events (> 50 mm) may have played a role. All of these factors contribute to a reduction of surface runoff to the gullies and their subsequent stabilization. © 2018 John Wiley & Sons, Ltd.

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Spatiotemporal variations of major parameters of temperature and humidity regime in the Volga Federal District

Cited by 13 publications

References 1 publication

Long-term monitoring of gully erosion in Udmurt Republic, Russia

Long-term monitoring of gully erosion in Udmurt Republic, Russia

Precipitation, humidity and cloudiness in Podgorica (Montenegro) during the period 1951-2018

Mapping and spatial‐temporal assessment of gully density in the Middle Volga region, Russia

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