scholarly journals A Study of the Influence of Atmospheric Aerosol Sources on the COVID-19 Contamination Cases Using Meteorological and Extinction Data

2020 ◽  
Author(s):  
Jacques Piazzola ◽  
Christelle Desnues ◽  
Philippe Parent ◽  
Christophe Yohia ◽  
Elisa Canepa
Keyword(s):  
Atmospheric Aerosol ◽  
Atmospheric Transport ◽  
Meteorological Conditions ◽  
Sea Spray ◽  
Virus Infectivity ◽  
Anthropogenic Aerosols ◽  
Virus Propagation ◽  
The People ◽  
The Social ◽  
Aerosol Properties

Abstract Background: Even if the people density, habits and displacements probably represent the most important causes of the SARS-Cov-2 virus propagation, the role of the atmospheric aerosol needs to be investigated. Therefore, we aimed to study if the aerosol properties related to the different sources and meteorological conditions we can observe in urbanized areas can have an influence on in the atmospheric transport of the SARS-Cov-2 virus. This study focuses on the lockdown period to reduce the differences in the social behavior.Methods: We have investigated the contamination cases of four specific geographic areas, two in France and two in Italy, located in both continental and coastal areas with regard to the meteorological conditions and the corresponding air mass properties. To this end, we used a survey of meteorological conditions and aerosol properties via both the optical depth (AOD) and Angstrom exponent retrievals for these locations during March 2020. Results: The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. In particular, our data show that moderate to strong onshore winds occurring in coastal regions, which allow large sea-spray production episodes deal with smaller COVID-19 contamination rates. One possible reason is the coagulation of SARS-Cov-2 particles with hygroscopic salty sea-spray aerosols that would tend to inhibit its viral infectivity in environments with high relative humidity via possible reaction with NaCl. Conclusions: In this paper, we hypothesize that marine atmosphere conditions tend to decrease virus infectivity. In contrast, the atmospheric transport of the SARS-Cov-2 can be favored by its coagulation with anthropogenic aerosols, which protects the virus particle from ambient humidity and preserves its infectivity.

scholarly journals Sea-spray aerosols and SARS-Cov-2: an analysis using AERONET data

2020 ◽  
Author(s):  
Jacques Piazzola ◽  
Christelle Desnues ◽  
Philippe Parent ◽  
Christophe Yohia ◽  
Elisa Canepa
Keyword(s):  
Atmospheric Transport ◽  
Meteorological Conditions ◽  
Sea Spray ◽  
Anthropogenic Aerosols ◽  
Virus Propagation ◽  
Air Masses ◽  
The People ◽  
The Social ◽  
Aerosol Properties

Abstract Even if the people density, habits and displacements probably represent the most important causes of the SARS-Cov-2 virus propagation, the role of the atmospheric aerosol needs to be investigated. Therefore, we aimed to study if the aerosol properties related to the different sources and meteorological conditions we can observe in urbanized areas can have an influence on in the atmospheric transport of the SARS-Cov-2 virus. This paper focuses on the lockdown period to reduce the differences in the social behavior. As an example, we investigated the contamination cases during March 2020 in two specific French areas located in both continental and coastal areas with regard to the meteorological conditions and the corresponding aerosol properties. To this end, we used both the optical depth (AOD) and the Angstrom exponent provided by the AERONET network. The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. In particular, our data show that moderate to strong onshore winds occurring in coastal regions, which allow large sea-spray production episodes, deal with smaller COVID-19 contamination rates. This is probably due to the fact that the coagulation of SARS-Cov-2 particles with hygroscopic salty sea-spray aerosols would tend to inhibit its viral infectivity via possible reaction with NaCl, especially in high relative humidity environments. In contrast, out results confirm that the atmospheric transport of the SARS-Cov-2 can be favored by its coagulation with anthropogenic aerosols, which protects the virus particle from ambient humidity and preserves its infectivity.Capsule: Our results suggest that maritime air-masses limit the SARS-Cov-2 impact via the role of the sea-spray.

scholarly journals Sea-spray aerosols and SARS-Cov-2: an analysis using AERONET data

2021 ◽  
Author(s):  
Jacques Piazzola ◽  
Christelle Desnues ◽  
Philippe Parent ◽  
Christophe Yohia ◽  
Elisa Canepa
Keyword(s):  
Atmospheric Transport ◽  
Meteorological Conditions ◽  
Sea Spray ◽  
Virus Propagation ◽  
Air Masses ◽  
The People ◽  
Viral Particles ◽  
The Social ◽  
Aerosol Properties

Abstract Even if the people density, habits and displacements probably represent the most important causes of the SARS-Cov-2 virus propagation, the role of the atmospheric aerosol in COVID-19 outbreaks is significant and it needs to be further investigated. Therefore, we aimed to study if the aerosol properties related to the different sources and meteorological conditions we can observe in continental and coastal urbanized areas can have an influence on the atmospheric transport of the SARS-Cov-2 virus. This paper focuses on the lockdown period to reduce the differences in the social behavior. As an example, we investigated the contamination cases during March 2020 in two specific French areas located in both continental and coastal areas with regard to the meteorological conditions and the corresponding aerosol properties. To this end, we used both the optical depth (AOD) and the Angstrom exponent provided by the AERONET network. The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. In particular, our data show that moderate to strong onshore winds occurring in coastal regions, which allow large sea-spray production episodes, deal with smaller COVID-19 contamination rates. This suggests that the coagulation of SARS-Cov-2 viral particles with hygroscopic salty sea-spray aerosols would tend to inhibit its viral infectivity via possible reaction with NaCl, especially in high relative humidity environments. Capsule: Our results suggest that maritime air-masses limit the SARS-Cov-2 impact via the role of the sea-spray.

scholarly journals Influence of Meteorological Conditions and Aerosol Properties on the COVID-19 Contamination of the Population in Coastal and Continental Areas in France: Study of Offshore and Onshore Winds

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 523
Author(s):  
Jacques Piazzola ◽  
William Bruch ◽  
Christelle Desnues ◽  
Philippe Parent ◽  
Christophe Yohia ◽  
...  
Keyword(s):  
Atmospheric Transport ◽  
Weather Conditions ◽  
Meteorological Conditions ◽  
Sea Spray ◽  
Atmospheric Conditions ◽  
Virus Transport ◽  
Virus Propagation ◽  
Viral Particles ◽  
The Social ◽  
Aerosol Properties

Human behaviors probably represent the most important causes of the SARS-Cov-2 virus propagation. However, the role of virus transport by aerosols—and therefore the influence of atmospheric conditions (temperature, humidity, type and concentration of aerosols)—on the spread of the epidemic remains an open and still debated question. This work aims to study whether or not the meteorological conditions related to the different aerosol properties in continental and coastal urbanized areas might influence the atmospheric transport of the SARS-Cov-2 virus. Our analysis focuses on the lockdown period to reduce the differences in the social behavior and highlight those of the weather conditions. As an example, we investigated the contamination cases during March 2020 in two specific French areas located in both continental and coastal areas with regard to the meteorological conditions and the corresponding aerosol properties, the optical depth (AOD) and the Angstrom exponent provided by the AERONET network. The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. We found that moderate to strong onshore winds occurring in coastal regions and inducing humid environment and large sea-spray production episodes coincides with smaller COVID-19 contamination rates. We assume that the coagulation of SARS-Cov-2 viral particles with hygroscopic salty sea-spray aerosols might tend to inhibit its viral infectivity via possible reaction with NaCl, especially in high relative humidity environments typical of maritime sites.

Contrasting Aerosol Optical Characteristics and Source Regions During Summer and Winter Pollution Episodes in Nanjing, China

2020 ◽  
Author(s):  
Jing Wang ◽  
Gerrit de Leeuw
Keyword(s):  
Extreme Values ◽  
Source Region ◽  
Surface Wind ◽  
Surface Wind Speed ◽  
Meteorological Conditions ◽  
Asymmetry Factor ◽  
Anthropogenic Aerosols ◽  
Source Regions ◽  
Fine Mode ◽  
Aerosol Properties

<p>Two episodes with heavy air pollution in Nanjing, China, one in the summer and another one in the winter of 2017, were selected to study aerosol properties using sun photometer and ground-based measurements, together with source region analysis. The aerosol properties, the meteorological conditions, and the source regions during these two episodes were very different. The episodes were selected based on the air quality index (AQI), which reached a maximum value of 193 during the summer episode (26 May–3 June) and 304 during the winter episode (21–31 December). The particulate matter (PM) concentrations during the winter episode reached maximum values for PM<sub>2.5/10</sub> of 254 μg m<sup>−3</sup> and 345 μg m<sup>−3</sup>, much higher than those during the summer (73 and 185 μg m<sup>−3</sup>). In contrast, the value of aerosol optical depth (AOD) at 500 nm was higher during the summer episode (2.52 ± 0.19) than during that in the winter (1.38 ± 0.18). A high AOD value does not necessarily correspond to a high PM concentration but is also affected by factors, such as wind, Planetary Boundary Layer Height (PBLH), and relative humidity. The mean value of the Ångström Exponent (AE) varied from 0.91–1.42, suggesting that the aerosol is a mixture of invaded dust and black carbon. The absorption was stronger during the summer than during the winter, with a minimum value of the single scattering albedo (SSA) at 440 nm of 0.86 on 28 May. Low values of asymmetry factor (ASY) (0.65 at 440 nm and 0.58 at 1020 nm) suggest a large number of anthropogenic aerosols, which are absorbing fine-mode particles. The Imaginary part of the Refractive Index (IRI) was higher during the summer than during the winter, indicating there was absorbing aerosol during the summer. These differences in aerosol properties during the summer and winter episodes are discussed in terms of meteorological conditions and transport. The extreme values of PM and AOD were reached during both episodes in conditions with stable atmospheric stratification and low surface wind speed, which are conducive for the accumulation of pollutants. Potential source contribution function (PSCF) and concentration weighted trajectory (CWT) analysis show that fine mode absorbing aerosols dominate during the summer season, mainly due to emissions of local and near-by sources. In the winter, part of the air masses was arriving from arid/semi-arid regions (Shaanxi, Ningxia, Gansu, and Inner Mongolia provinces) covering long distances and transporting coarse particles to the study area, which increased the scattering characteristics of aerosols.</p>

scholarly journals The Atmospheric Aerosol over Western Greece-Six Years of Aerosol Observations at the Navarino Environmental Observatory

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 445
Author(s):  
Hans-Christen Hansson ◽  
Peter Tunved ◽  
Radovan Krejci ◽  
Eyal Freud ◽  
Nikos Kalivitis ◽  
...  
Keyword(s):  
Atmospheric Aerosol ◽  
Large Scale ◽  
Eastern Mediterranean ◽  
Sea Breeze ◽  
Radiation Balance ◽  
Precipitation Pattern ◽  
Anthropogenic Aerosols ◽  
Mesoscale Meteorology ◽  
Anthropogenic Aerosol ◽  
Aerosol Properties

The Eastern Mediterranean is a highly populated area with air quality problems. It is also where climate change is already noticed by higher temperatures and s changing precipitation pattern. The anthropogenic aerosol affects health and changing concentrations and properties of the atmospheric aerosol affect radiation balance and clouds. Continuous long-term observations are essential in assessing the influence of anthropogenic aerosols on climate and health. We present six years of observations from Navarino Environmental Observatory (NEO), a new station located at the south west tip of Peloponnese, Greece. The two sites at NEO, were evaluated to show the influence of the local meteorology and to assess the general background aerosol possible. It was found that the background aerosol was originated from aged European aerosols and was strongly influenced by biomass burning, fossil fuel combustion, and industry. When subsiding into the boundary layer, local sources contributed in the air masses moving south. Mesoscale meteorology determined the diurnal variation of aerosol properties such as mass and number by means of typical sea breeze circulation, giving rise to pronounced morning and evening peaks in pollutant levels. While synoptic scale meteorology, mainly large-scale air mass transport and precipitation, strongly influenced the seasonality of the aerosol properties.

scholarly journals Contrasting Aerosol Optical Characteristics and Source Regions During Summer and Winter Pollution Episodes in Nanjing, China

2019 ◽  
Vol 11 (14) ◽  
pp. 1696 ◽  
Author(s):  
Wang ◽  
de Leeuw ◽  
Niu ◽  
Kang
Keyword(s):  
Extreme Values ◽  
Source Region ◽  
Surface Wind ◽  
Surface Wind Speed ◽  
Meteorological Conditions ◽  
Asymmetry Factor ◽  
Anthropogenic Aerosols ◽  
Source Regions ◽  
Fine Mode ◽  
Aerosol Properties

Two episodes with heavy air pollution in Nanjing, China, one in the summer and another one in the winter of 2017, were selected to study aerosol properties using sun photometer and ground-based measurements, together with source region analysis. The aerosol properties, the meteorological conditions, and the source regions during these two episodes were very different. The episodes were selected based on the air quality index (AQI), which reached a maximum value of 193 during the summer episode (26 May–3 June) and 304 during the winter episode (21–31 December). The particulate matter (PM) concentrations during the winter episode reached maximum values for PM2.5/10 of 254 g m−3 and 345 g m−3, much higher than those during the summer (73 and 185 g m−3). In contrast, the value of aerosol optical depth (AOD) at 500 nm was higher during the summer episode (2.52 0.19) than during that in the winter (1.38 0.18). A high AOD value does not necessarily correspond to a high PM concentration but is also affected by factors, such as wind, Planetary Boundary Layer Height (PBLH), and relative humidity. The mean value of the Ångström Exponent (AE) varied from 0.91–1.42, suggesting that the aerosol is a mixture of invaded dust and black carbon. The absorption was stronger during the summer than during the winter, with a minimum value of the single scattering albedo (SSA) at 440 nm of 0.86 on 28 May. Low values of asymmetry factor (ASY) (0.65 at 440 nm and 0.58 at 1020 nm) suggest a large number of anthropogenic aerosols, which are absorbing fine-mode particles. The Imaginary part of the Refractive Index (IRI) was higher during the summer than during the winter, indicating there was absorbing aerosol during the summer. These differences in aerosol properties during the summer and winter episodes are discussed in terms of meteorological conditions and transport. The extreme values of PM and AOD were reached during both episodes in conditions with stable atmospheric stratification and low surface wind speed, which are conducive for the accumulation of pollutants. Potential source contribution function (PSCF) and concentration weighted trajectory (CWT) analysis show that fine mode absorbing aerosols dominate during the summer season, mainly due to emissions of local and near-by sources. In the winter, part of the air masses was arriving from arid/semi-arid regions (Shaanxi, Ningxia, Gansu, and Inner Mongolia provinces) covering long distances and transporting coarse particles to the study area, which increased the scattering characteristics of aerosols.

Pelaksanaan Jaminan Kesehatan Oleh BPJS Kesehatan Dalam Perspektif Syariah

Liquidity ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 110-118
Author(s):  
Iwan Subandi ◽  
Fathurrahman Djamil
Keyword(s):  
Health Care ◽  
Financial Institution ◽  
Social Supports ◽  
Religious Leaders ◽  
The Public ◽  
The People ◽  
The Social ◽  
Ministry Of Finance ◽  
Health Support ◽  
The Government

Health is the basic right for everybody, therefore every citizen is entitled to get the health care. In enforcing the regulation for Jaringan Kesehatan Nasional (National Health Supports), it is heavily influenced by the foreign interests. Economically, this program does not reduce the people’s burdens, on the contrary, it will increase them. This means the health supports in which should place the government as the guarantor of the public health, but the people themselves that should pay for the health care. In the realization of the health support the are elements against the Syariah principles. Indonesian Muslim Religious Leaders (MUI) only say that the BPJS Kesehatan (Sosial Support Institution for Health) does not conform with the syariah. The society is asked to register and continue the participation in the program of Social Supports Institution for Health. The best solution is to enforce the mechanism which is in accordance with the syariah principles. The establishment of BPJS based on syariah has to be carried out in cooperation from the elements of Social Supports Institution (BPJS), Indonesian Muslim Religious (MUI), Financial Institution Authorities, National Social Supports Council, Ministry of Health, and Ministry of Finance. Accordingly, the Social Supports Institution for Helath (BPJS Kesehatan) based on syariah principles could be obtained and could became the solution of the polemics in the society.

Analytical Study of Violence Theme in Victoria Schwab’s This Savage Song

2019 ◽  
Keyword(s):  
Analytical Study ◽  
Research Paper ◽  
The Novel ◽  
Vicious Cycle ◽  
Aggressive Approach ◽  
Research Article ◽  
The People ◽  
The Social ◽  
Different Dimensions ◽  
The Right

This research article focuses on the theme of violence and its representation by the characters of the novel “This Savage Song” by Victoria Schwab. How violence is transmitted through genes to next generations and to what extent socio- psycho factors are involved in it, has also been discussed. Similarly, in what manner violent events and deeds by the parents affect the psychology of children and how it inculcates aggressive behaviour in their minds has been studied. What role is played by the parents in grooming the personality of children and ultimately their decisions to choose the right or wrong way has been argued. In the light of the theory of Judith Harris, this research paper highlights all the phenomena involved: How the social hierarchy controls the behaviour. In addition, the aggressive approach of the people in their lives has been analyzed in the light of the study of second theorist Thomas W Blume. As the novel is a unique representation of supernatural characters, the monsters, which are the products of some cruel deeds, this research paper brings out different dimensions of human sufferings with respect to these supernatural beings. Moreover, the researcher also discusses that, in what manner the curse of violence creates an inevitable vicious cycle of cruel monsters that makes the life of the characters turbulent and miserable.

MENELUSURI JEJAK DAN KIPRAH KIAI MOHAMMAD HASAN GENGGONG; DALAM MEMBANGUN KEPEMIMPINAN SPRITUAL-TRANSFORMATIF

2018 ◽  
Vol 2 (1) ◽  
pp. 17
Author(s):  
Ahmad Fauzi ◽  
Chusnul Muali
Keyword(s):  
Social Action ◽  
Boarding School ◽  
Transformative Leadership ◽  
Social Recognition ◽  
School Students ◽  
Value System ◽  
Social Actions ◽  
The People ◽  
The Social ◽  
Islamic Science

Pesantren and social value system is the result of constructing kiai's thoughts and social actions as an inseparable entity. This study aims to interpret the role and social action of kiai Moh Hasan, both as a fighter (al-haiah al-jihaadi li'izzi al-Islaami wal muslimin) in the community as well as guidance and guidance for the community (al-haiah al ta 'awuny wa al takafuly wal al ittijaahi) and teaching in educational institutions (al-haiah al ta'lim wa al-tarbiyah), significantly contributes greatly to the social realities of society in Indonesia. Portrait of central figure kiai Moh Hasan can not be separated from the depth of his field of Islamic science, simplicity, kezuhudan, struggle, sincerity and generosity. This view, not only recognized among the people around the boarding school, students and colleagues, but also spread in some areas in Indonesia. The fame of kiai Moh Hasan among scholars, habaib and society has many karamah and some other privileges, not even a few from the social recognition of kiai Moh Hasan Genggong, because the kiai are believed to have closeness with God, thus perceived as auliya'Allah. Thus the role and social actions of the kiai above, gave birth to the value system, so as to influence and move the social action of other individuals. The internalization of the aforementioned values becomes social capital in building a spiritual-based transformative leadership, as a strong leadership model and conducts various changes in the social field, by transforming the value of the ethical values.

Main Forms of Propagandistic Activities of the Right-Wing Parties (1904–1914)

2020 ◽  
Vol 102 ◽  
pp. 656-676
Author(s):  
Igor V. Omeliyanchuk
Keyword(s):  
20Th Century ◽  
Social Groups ◽  
Right Wing ◽  
Periodical Press ◽  
Political Movement ◽  
The People ◽  
The Social ◽  
The Right ◽  
In The Beginning ◽  
The 19Th Century

The article examines the main forms and methods of agitation and propagandistic activities of monarchic parties in Russia in the beginning of the 20th century. Among them the author singles out such ones as periodical press, publication of books, brochures and flyers, organization of manifestations, religious processions, public prayers and funeral services, sending deputations to the monarch, organization of public lectures and readings for the people, as well as various philanthropic events. Using various forms of propagandistic activities the monarchists aspired to embrace all social groups and classes of the population in order to organize all-class and all-estate political movement in support of the autocracy. While they gained certain success in promoting their ideology, the Rights, nevertheless, lost to their adversaries from the radical opposition camp, as the monarchists constrained by their conservative ideology, could not promise immediate social and political changes to the population, and that fact was excessively used by their opponents. Moreover, the ideological paradigm of the Right camp expressed in the “Orthodoxy, Autocracy, Nationality” formula no longer agreed with the social and economic realities of Russia due to modernization processes that were underway in the country from the middle of the 19th century.

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