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

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.

Author(s):  
Л.А. Кешева ◽  
◽  
Н.В. Теунова ◽  

Currently, much attention is paid to the study of climate change. The climate of Kabardino- Balkaria is formed under the influence of the following main climate-forming factors: latitude, terrain, direction of prevailing winds, underlying surface. The mountainous relief causes high-altitude climate zoning, which is especially pronounced in the high-mountainous region of the Central Caucasus. The general change in air temperature and humidity with height is superimposed by a change in air circulation in the high layers of the atmosphere. In the mountains, from an altitude of about 2000 m, the leading role belongs to the western air transport. This paper presents the results of a study based on instrumental observation data at 3 m / stations located in different climatic zones of the Kabardino-Balkarian Republic.


Author(s):  
Anak Agung Angga Dwipa ◽  
I Gede Putu Wirarama Wedashwara W ◽  
Ariyan Zubaidi

Air temperature and humidity as well as water temperature are very important environment variables in planting DFT hydroponic lettuce plants in a greenhouse. Controlling and monitoring the temperature and humidity generally still done manually by farmers. This problem can be solved by building an air conditioning system that implements the concept of the Internet of Things, which plays a role in automation control of actuators, and MQTT protocols as its data communication medium. Based on the test results, the system has been able to perform measurement and conditioning of air temperature and humidity, as well as water temperature in the greenhouse automatically. Comparison of observation and test result data with sunny weather conditions, showing that the average and maximum value of air and water temperature on test, lower compared to observation data. While the average and minimum value of humidity in the test are higher than the observation data.


Author(s):  
Andreea-Mihaela Dunca

Abstract Banat, a region situated in the western and south-western extremity of Romania, benefits from a defense network of meteorological stations in which a meteorological long-term monitoring activity of approximately 150 years is being carried out. Geographical position and diversity of physico-geographical conditions, under the influence of atmospheric circulation factors, determine both the major features of the climate in this region, as well as its local nuances. In order to analyze the spatial and temporal distribution of air temperature in Banat, we collected data strings and continuous meteorological observations from 14 weather stations in this area over a 35 years period (1979-2013). In Banat the air temperature regime presents a series of particularities and a patchy distribution as a result of the interaction of dynamic processes with the great diversity of these physicogeographical conditions. Analyzing the meteorological data strings one can observe that the air temperature varies in Banat, both spatially, from one meteorological station to another, and temporally from one year to another, from one semester to another, from one season to another but also from one month to the next due to the frequency and intensity of the advection of the different masses of air. The analysis of the air temperature and the thermal regime in Banat region confirms the moderate climate, with quite strong Oceanic influences from the western part of Europe and the weaker sub-Mediterranean influences, from the southwestern part of the continent. However, as a consequence of the global climate changes we are witnessing, at least in the last 50 years, there has also been a trend in Banat to increase the average annual temperature.


Author(s):  

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.


2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Hanifa Marisa

An investigation had been done to Tetragonula (Tetragona) sp nest at Indralaya, South Sumatra to describe the Tetragonula sp nest that use streetlight pole as nest medium during April - May 2019. Purpossive sampling is used to select the target nest. Two streetlight pole found be used by Tetragonula sp as their home. The coordinate of location, heght from ground surface, diameter of streetlight pole, air temperature and humidity, and floral species around nest, were noted. Spot coordinate are S 30 14’ 19.2498’’ and E 1040 39’ 15,3288’’ ; 1,5 m above the ground surface, 12 cm diameter pole, highest air temperature was 35 o C at daylight (April and May 2019), 80 – 90 % humidity at April-May 2019; which Switenia macrophyla, Hevea brasiliensis, Zea mays, and Citrullus lanatus floral species are planted around. Air temperature in the pole is very high, around 40 0 C during daylight.


2021 ◽  
Vol 13 (4) ◽  
pp. 680
Author(s):  
Lei Wang ◽  
Wen Zhuo ◽  
Zhifang Pei ◽  
Xingyuan Tong ◽  
Wei Han ◽  
...  

Massive desert locust swarms have been threatening and devouring natural vegetation and agricultural crops in East Africa and West Asia since 2019, and the event developed into a rare and globally concerning locust upsurge in early 2020. The breeding, maturation, concentration and migration of locusts rely on appropriate environmental factors, mainly precipitation, temperature, vegetation coverage and land-surface soil moisture. Remotely sensed images and long-term meteorological observations across the desert locust invasion area were analyzed to explore the complex drivers, vegetation losses and growing trends during the locust upsurge in this study. The results revealed that (1) the intense precipitation events in the Arabian Peninsula during 2018 provided suitable soil moisture and lush vegetation, thus promoting locust breeding, multiplication and gregarization; (2) the regions affected by the heavy rainfall in 2019 shifted from the Arabian Peninsula to West Asia and Northeast Africa, thus driving the vast locust swarms migrating into those regions and causing enormous vegetation loss; (3) the soil moisture and NDVI anomalies corresponded well with the locust swarm movements; and (4) there was a low chance the eastwardly migrating locust swarms would fly into the Indochina Peninsula and Southwest China.


2012 ◽  
Vol 18 (4) ◽  
pp. CR201-CR208 ◽  
Author(s):  
Jerrold S. Petrofsky ◽  
Lee Berk ◽  
Faris Alshammari ◽  
Haneul Lee ◽  
Adel Hamdan ◽  
...  

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