GICS IN THE MAIN TRANSMISSION LINE “NORTHERN TRANSIT” IN RUSSIA AND IN THE MÄNTSÄLÄ FINLAND PIPELINE: A CASE STUDY

2021 ◽  
Vol 44 ◽  
pp. 20-23
Author(s):  
I.V. Despirak ◽  
◽  
P.V. Setsko ◽  
Ya.A. Sakharov ◽  
V.N. Selivanov ◽  
...  
Keyword(s):  
Negative Impact ◽  
Temporal Structure ◽  
Auroral Zone ◽  
Magnetic Data ◽  
Geomagnetically Induced Currents ◽  
Camera System ◽  
Natural Gas Pipeline ◽  
Spatio Temporal ◽  
Using Data

Geomagnetically induced currents (GICs), arising both on power lines and on pipelines, may have strong negative impact on the technological networks up to accidents ("blackouts"). Magnetospheric disturbances are one of the factors in the appearance of GICs, however there is no unambiguous relationship between substorm and presence of currents. In this paper, we consider two intense cases of GIC (15March 2012 and 17 March 2013), registered on two different technological networks: 1) on the "Nothern Transit" power line (Vykhodnoy, Revda and Kondopoga stations) located in the auroral zone, 2) on the Finnish natural gas pipeline near Mäntsälä located in the subauroral zone. Both GIC cases are compared with substorm development in the auroral zone, using data from IMAGE magnetometers network and MAIN camera system in Apatity. We found a good correlation between the GIC appearance and variations of geomagnetic indexes: IL – index, which characterized of westward electrojet intensity on the IMAGE meridian and Wp - index, which describes the wave activity of the substorm. Besides, it was shown also a good correlation between GICs and the thin spatio-temporal structure of the substorm development (the appearance and the propagation to the pole of substorm activations), which is appeared both in the magnetic data and in the all sky camera images.

scholarly journals Case study of a moisture intrusion over the Arctic with the ICOsahedral Non-hydrostatic (ICON) model: resolution dependence of its representation

2022 ◽  
Vol 22 (1) ◽  
pp. 173-196
Author(s):  
Hélène Bresson ◽  
Annette Rinke ◽  
Mario Mech ◽  
Daniel Reinert ◽  
Vera Schemann ◽  
...  
Keyword(s):  
High Resolution ◽  
Temporal Structure ◽  
Specific Humidity ◽  
The Arctic ◽  
Limited Area ◽  
Turbulent Heat ◽  
Strong Impact ◽  
Downward Longwave Radiation ◽  
Spatio Temporal

Abstract. The Arctic is warming faster than the global average and any other region of a similar size. One important factor in this is the poleward atmospheric transport of heat and moisture, which contributes directly to the surface and air warming. In this case study, the atmospheric circulation and spatio-temporal structure of a moisture intrusion event is assessed, which occurred from 5 to 7 June 2017 over the Nordic seas during an intensive measurement campaign over Svalbard. This analysis focuses on high-spatial-resolution simulations with the ICON (ICOsahedral Non-hydrostatic) model which is put in context with coarser-resolution runs as well the ERA5 reanalysis. A variety of observations including passive microwave satellite measurements is used for evaluation. The global operational ICON forecasts from the Deutscher Wetterdienst (DWD) at 13 km horizontal resolution are used to drive high-resolution Limited-Area Mode (LAM) ICON simulations over the Arctic with 6 and 3 km horizontal resolutions. The results show the skilful capacity of the ICON-LAM model to represent the observed spatio-temporal structure of the selected moisture intrusion event and its signature in the temperature, humidity and wind profiles, and surface radiation. In several aspects, the high-resolution simulations offer a higher accuracy than the global simulations and the ERA5 reanalysis when evaluated against observations. One feature where the high-resolution simulations demonstrated an advanced skill is the representation of the changing vertical structure of specific humidity and wind associated with the moisture intrusion passing Ny-Ålesund (western Svalbard); the humidity increase at 1–2 km height topped by a dry layer and the development of a low-level wind jet are best represented by the 3 km simulation. The study also demonstrates that such moisture intrusions can have a strong impact on the radiative and turbulent heat fluxes at the surface. A drastic decrease in downward shortwave radiation by ca. 500 W m−2 as well as an increase in downward longwave radiation by ca. 100 W m−2 within 3 h have been determined. These results highlight the importance of both moisture and clouds associated with this event for the surface energy budget.

scholarly journals Dynamics and spatio-temporal distribution of geomagnetic disturbances during periods of increased solar activity and magnetic storms

2020 ◽  
Vol 196 ◽  
pp. 02009
Author(s):  
Oksana Mandrikova ◽  
Anastasia Rodomanskay
Keyword(s):  
Cross Correlation ◽  
Temporal Distribution ◽  
Temporal Analysis ◽  
Auroral Zone ◽  
Magnetic Storms ◽  
Magnetic Data ◽  
Geomagnetic Disturbances ◽  
Short Period ◽  
Adaptive Thresholds ◽  
Spatio Temporal

A detailed spatio-temporal analysis of magnetic data was performed during the periods of magnetic storms on October 02, 2013 and September 27, 2019 based on measurements of the station network. In this work, we used a method developed by us for the analysis of magnetic data, based on the use of wavelet transform and adaptive thresholds. The method allows us to identify short-period field disturbances and estimate their intensity from the data of the H-component of the geomagnetic field. The features of the occurrence and propagation of geomagnetic disturbances in the auroral zone and at meridionally located stations have been studied. Dynamic spectra of disturbances of different intensity and duration are obtained. The paper confirms the possibility of occurrence of short-period weak geomagnetic disturbances at stations from high latitudes to the equator, preceding magnetic storms and correlating with fluctuations of the southern Bz-component of the interplanetary magnetic field and increases in the auroral indices of geomagnetic activity. Cross-correlation dependences of the intensity of geomagnetic disturbances on the parameters of the interplanetary medium during magnetic storms were obtained from the data of the network of magnetic stations. A statistically significant influence of the magnitude of the scope of the Bz-component of the IMF and the speed of the solar wind on the development of magnetic storms during the initial and main phases of magnetic storms was revealed.

scholarly journals Case study of a moisture intrusion over the Arctic with the ICON model: resolution dependence of its representation

2021 ◽  
Author(s):  
Hélène Bresson ◽  
Annette Rinke ◽  
Mario Mech ◽  
Daniel Reinert ◽  
Vera Schemann ◽  
...  
Keyword(s):  
High Resolution ◽  
Temporal Structure ◽  
Specific Humidity ◽  
The Arctic ◽  
Limited Area ◽  
Turbulent Heat ◽  
Strong Impact ◽  
Downward Longwave Radiation ◽  
Spatio Temporal

Abstract. The Arctic is warming faster than the global average and any other region. One important factor for this is the poleward atmospheric transport of heat and moisture, which contributes directly to the surface and air warming. In this case study, the atmospheric circulation and spatio-temporal structure of a moisture intrusion event is assessed, which occurred during the 5th to 7th June 2017 over the Nordic Seas during an intensive measurement campaign over Svalbard. This analysis focuses on high-spatial resolution simulations with the ICON (ICOsahedral Non-hydrostatic) model which is put in context with coarser resolution runs as well the ERA5 reanalysis. A variety of observations including passive microwave satellite measurements is used for evaluation. The global operational ICON forecasts from the German Weather Service DWD at 13 km horizontal resolution are used to drive high resolution Limited Area Mode (LAM) ICON simulations over the Arctic with 6 km and 3 km horizontal resolutions. The results show the skillfull capacity of the ICON-LAM model to represent the observed spatio-temporal structure of the selected moisture intrusion event and its signature in the temperature, humidity and wind profiles, and surface radiation. The high resolution simulations offer a higher accuracy than the global simulations and the ERA5 reanalysis, compared to observations. This is especially demonstrated in the representation of the changing vertical structure of specific humidity and wind associated with the moisture intrusion passing Ny-Ålesund (western Svalbard). Namely, the humidity increase in 1–2 km height topped by a dry layer and the development of a low-level wind jet is best represented by the 3 km simulation. The study also demonstrates that such moisture intrusions can have a strong impact on the radiative and turbulent heat fluxes at the surface. A drastic decrease of downward shortwave radiation by ca. 500 W m−2 and an increase of downward longwave radiation by ca. 100 W m−2 within 3 hours are determined, which highlight the importance of both moisture and clouds associated with this event for the surface energy budget.

scholarly journals Abortion and infant mortality change driven by socioeconomic conditions in Russia

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Li Wang ◽  
Linsheng Yang ◽  
Hairong Li ◽  
Hongyan Cai ◽  
Jixia Huang ◽  
...  
Keyword(s):  
Infant Mortality ◽  
Negative Impact ◽  
Positive Impact ◽  
Infant Mortality Rate ◽  
Socioeconomic Conditions ◽  
Per Capita ◽  
Spatio Temporal ◽  
Using Data ◽  
Regional Product ◽  
The Impact

Increasing fertility and decreasing mortality are major response strategies in Russian demographic reform, which has led to significant decreases in both abortion rate (AR) and infant mortality. This study explores mechanisms influencing the socioeconomic conditions leading to abortion and infant mortality. Spatial panel economic analysis using data from the 83 regions of the country covering four time periods was applied. Every 1000 USD increase in per capita gross regional product (GRP) can lead to a decrease of the AR by 0.075, while one year life expectancy increase would lower it by 0.441. For infant mortality rate (IMR), GRP also shows a positive impact, particularly in recent years, while the population size of the region has a negative impact. Every 1000 USD increase in per capita GRP would result in a rate decrease of 0.064 in IMR, and every increase of 1000 added population would lead to an increased IMR by 2.05. The harvest effect between AR and infant mortality that was evident earlier, but not in the recent years, implies that the health care system in Russia is effective. A comprehensive improvement in wellbeing, income, etc. can contribute to mitigation of abortion and infant mortality. Theoretically, this study extends current research by comprehensively displaying the spatio-temporal patterns of abortion and infant mortality in Russia and qualifies the impact of regional socioeconomic disparities with regard to these two issues.

scholarly journals Student Consumptive Lifestyle and Its Implications in Guidance and Counseling

2021 ◽  
Vol 2 (1) ◽  
pp. 41-47
Author(s):  
Rahmi Azhari ◽  
Herman Nirwana ◽  
Mega Iswari
Keyword(s):  
Negative Impact ◽  
Case Study Research ◽  
Guidance And Counseling ◽  
Research Subjects ◽  
Contributing Factors ◽  
Analysis Technique ◽  
Using Data ◽  
Depth Interviews ◽  
Research Type

This study aims to analyze how the form of student's consumptive lifestyle, the factors that cause it, and the negative impact of the student's consumptive lifestyle. This research uses descriptive qualitative method with case study research type. The research subjects were 2 people within the scope of UIN Suska Riau students, using data collection techniques, namely in-depth interviews, observation and documentation. The data analysis technique used by researchers was guided by the Miles & Huberman model. The results showed that the form of a consumptive lifestyle that was seen in the research subjects was excessive shopping and buying goods that did not suit their needs. The contributing factors are shopping because of discounts, likes to be admired by others, and environmental factors. As well as the negative impact of a consumptive lifestyle that occurs on the subject of the study are: low budget economy, likes to lie, becomes a person who likes to be in debt, and is negligent in doing college assignments

A case study of global ULF pulsations using data from space-borne and ground-based magnetometers and a SuperDARN radar

2011 ◽  
Vol 17 (6) ◽  
pp. 54-67
Author(s):  
A.S. Potapov ◽  
◽  
E. Amata ◽  
T.N. Polyushkina ◽  
I. Coco ◽  
...  
Keyword(s):  
Using Data

Modernisation of Higher Education – Willful Action or Wishful Thinking? The Case of Bulgaria

2020 ◽  
Vol 8 (3) ◽  
pp. 3-17
Author(s):  
Elena Blagoeva
Keyword(s):  
Higher Education ◽  
Economic Crisis ◽  
Negative Impact ◽  
National Level ◽  
Sustainable Growth ◽  
Research Approach ◽  
Case Study Methodology ◽  
The Impact ◽  
The Eu

The impact of the last global economic crisis (2008) on the European economy put a strain on higher education (HE), yet it also pushed the sector towards intensive reforms and improvements. This paper focuses on the “Strategy for the Development of Higher Education in the Republic of Bulgaria 2014-2020”. With a case study methodology, we explore the strategic endeavours of the Bulgarian government to comply with the European directions and to secure sustainable growth for the HE sector. Our research question is ‘How capable is the Bulgarian HE Strategy to overcome the economic and systemic restraints of Bulgarian higher education?’. Because the development of strategies for HE within the EU is highly contextual, a single qualitative case study was chosen as the research approach. HE institutions are not ivory towers, but subjects to a variety of external and internal forces. Within the EU, this is obviated by the fact that Universities obtain their funds from institutions such as governments, students and their families, donors, as well as EU-level programmes. Therefore, to explore how these pressures interact to affect strategic action on national level, the case method is well suited as it enabled us to study the phenomena thoroughly and deeply. The paper suggests the actions proposed within the Strategy have the potential to overcome the delay, the regional isolation and the negative impact of the economic crisis on the country. Nevertheless, the key elements on which the success or failure of this Strategy hinges are the control mechanisms and the approach to implementation. Shortcomings in these two aspects of strategic actions in HE seem to mark the difference between gaining long-term benefits and merely saving face in front of international institutions.

Is There Racial Discrimination in Police Stop-and-Searches of Black Youth? A Toronto Case Study

2015 ◽  
Vol 7 (1) ◽  
pp. 115 ◽  
Author(s):  
Yunliang Meng ◽  
Sulaimon Giwa ◽  
Uzo Anucha
Keyword(s):  
Racial Profiling ◽  
Negative Impact ◽  
Black Youth ◽  
White People ◽  
Neighbourhood Level ◽  
Neighbourhood Characteristics ◽  
The Relationship ◽  
Race And Place ◽  
Stop And Search

Our study investigated racial profiling of Black youth in Toronto and linked this racial profiling to urban disadvantage theory, which highlights neighbourhood-level processes. Our findings provide empirical evidence suggesting that because of racial profiling, Black youth are subject to disproportionately more stops for gun-, traffic-, drug-, and suspicious activity-related reasons. Moreover, they show that drug-related stop-and-searches of Black youth occur most excessively in neighbourhoods where more White people reside and are less disadvantaged, demonstrating that race-and-place profiling of Black youth exists in police stop-and-search practices. This study shows that the theoretical literature in sociology on neighbourhood characteristics can contribute to an understanding of the relationship between race and police stops in the context of neighbourhood. It also discusses the negative impact of racial profiling on Black youth.

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