scholarly journals Metodologia preliminar de identificação de relações entre a brisa marítima e linhas de instabilidade amazônicas

2020 ◽  
Vol 42 ◽  
pp. e29
Author(s):  
Romero Thiago Sobrinho Wanzeler ◽  
Clênia Rodrigues Alcântara ◽  
Kamila Souza Santos ◽  
Madson Tavares Silva

The objective of this work was to present a preliminary methodology that is able to identify some characteristics of the relationship between the sea breeze circulation and the Amazonian squalline, aiming to understand a little more of the necessary conditions for the deepening of the associated cloudiness. The wavelet transform was applied to the wind and divergence data of ERA5 reanalysis, and a classification was afterwards developed to highlight exclusively the days considered the ideal active period to formation and intensification of the sea breeze circulation and initiation of the Amazonian squalline. The results showed that the relationship between the sea breeze circulation and the Amazonian squalline may be related to the influence of wind at 800 hPa and divergence at 200 hPa. The analysis of average field of the active period days ideal for formation and intensification of the sea breeze circulation and initiation of the Amazonian squalline was able to represent important wind-related characteristics (low level jet between 850 and 750 hPa) and divergence at 200 hPa, indicating that these characteristics, before being directly related to the Amazonian squalline, may first influence the sea breeze circulation performance and intensification.

2021 ◽  
Author(s):  
Bingui Wu

<p>Correlation between Low-level Jets and Fog Events in Tianjin  </p><p>Bingui Wu<sup>1,2</sup> Zongfei Li<sup>1,2</sup> , Tingting Ju<sup>3,&</sup>, Hongsheng Zhang<sup>4</sup></p><p><sup>1</sup> Affiliation:<sup></sup>Tianjin Key Labarotory of Marine Meteorology, Tianjin 300074, China.</p><p><sup>2</sup> Affiliation: Tianjin Meteorological Bureau, Tianjin 300074, China.</p><p>Address: Tianjin Meteorological Bureau, No.100 Weather Station Road Hexi District, Tianjin, 300074, China.</p><p><sup>3</sup> Affiliation: Institute of Navigation College, Dalian Maritime University, Dalian 116026, China</p><p>Address: Dalian Maritime University, No.1 LinghaiRoad Ganjingzi District, Dalian 116026, China<sup></sup></p><p><sup>4</sup> Affiliation: Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China</p><p>Address: Peking University, No.5 Yiheyuan Road Haidian District, Beijing 100871, China</p><p>KEY WORDS: low level jet, fog, Tianjin</p><p>Abstract</p><p>Fog and low level jet (LLJ) greatly affect aviation. Both of them are cared more, while not for their relationship. In this study, the relationship between the LLJs and fog are studied using the observational hourly wind profile data and the automatic meteorological observation data from Xiqing in 2016. The results show that LLJs play an important role in the fog events. The fog events tend to occur frequently with the occurrence of LLJs, especially in spring and summer, which suggest the LLJs seem to be more important for triggering advection fogs. In addition, the relationship between LLJs and fog events occur simultaneously and one, two and three days after the occurrence of LLJs are compared, and a pronounced relation are observed between LLJs and fog events one day after, a lag effect of LLJs on fog events is verified. For the condition that the LLJ and fog event occur on the same day, the differences of specific humidity between the occurrence of LLJs and fogs. In the case that the occurrence of LLJ is prior to fog, persistent southwest wind support the fog formation. While the differences of specific humidity between the occurrence of LLJs and fogs, in the case that the occurrence of LLJ is posterior to fog are always larger or close to zero, and the prevailing wind direction is north wind, which suggest that the main contribution of LLJs to fog is leading to fog dissipation and short duration in this condition. For the condition that the occurrence of LLJ one day prior to fog event, a pronounced negative correlation between the height of LLJs and the duration of fog is observed.</p>


1970 ◽  
Vol 6 (2) ◽  
Author(s):  
Nurul Aini Musyarofah

The relationship between Islam and state raises a controversy that includes two main groups;formalists and substantialists. Both of them intend to achieve a good social condition which is inaccordance with Islamic politics. The ideal form of good society to be achieved is principallydescribed in the main source of Islamic law, Al Qur’an and As Sunnah, as follows. A form of goodsociety should supprot equality and justice, egalitarianism, and democracy in its social community.The next problem is what the needed methods and instruments to achieve the ideal Islamic politicsare. In this case, the debate on the formalization and substance of Islamic teaching is related to therunning formal political institution.Each group claims itself to be the most representative to the ideal Islam that often leads to anescalating conflict. On the other hand thr arguments of both groups does not reach the wholeMuslims. As a result, the discourse of Islam and state seems to be elitist and political. As a result,Both groups suspect each other each other and try to utilize the controversy on the relationshipbetween Islam and state to get their own benefit which has no relation with the actualization ofIslamic teaching.


Human Affairs ◽  
2020 ◽  
Vol 30 (3) ◽  
pp. 353-364
Author(s):  
Cristiana Senigaglia

AbstractAlthough Max Weber does not specifically analyze the topic of esteem, his investigation of the Protestant ethic offers interesting insights into it. The change in mentality it engendered essentially contributed to enhancing the meaning and importance of esteem in modern society. In his analysis, Weber ascertains that esteem was fundamental to being accepted and integrated into the social life of congregations. Nevertheless, he also highlights that esteem was supported by a form of self-esteem which was not simply derived from a good social reputation, but also achieved through a deep and continual self-analysis as well as a strict discipline in the ethical conduct of life. The present analysis reconstructs the different aspects of the relationship between social and self-esteem and analyzes the consequences of that relationship by focusing on the exemplary case of the politician’s personality and ethic.


2017 ◽  
Vol 51 (4) ◽  
pp. 1537-1558 ◽  
Author(s):  
James F. Danco ◽  
Elinor R. Martin

1965 ◽  
Vol 43 (4) ◽  
pp. 670-675 ◽  
Author(s):  
B. Ahlborn ◽  
A. J. Barnard ◽  
H. D. Campbell

In a pulsed arc with mercury electrodes the average column field strength Eco was measured for different currents I, and the relationship [Formula: see text] was found. The variations of arc current and voltage with time indicate that the anode and cathode fall regions have a combined thickness of 3 × 10−6 cm, and an average field strength of 2 × 106 V/cm. The arc plasma is formed mainly from mercury vapor, rather than from the surrounding gas.


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