Trace pollutant fluctuations observed in Calicut city, India, during the annular solar eclipse on 26 December 2019

Impact of the Eclipsed Sun on Terrestrial Atmospheric Parameters in Desert Locations: A Comprehensive Overview and Two Events Case Study in Saudi Arabia

“…Aplin et al (2016) [48] review some of these articles, and Peñaloza-Murillo and Pasachoff's (2015) [49] supplementary material compiles an extensive but non-exhaustible account of this type of study between 1842 and 2013 [see also Kameda et al (2009) [50], Table 1]. Undoubtedly, the fall of temperature in the free air near the Earth's surface has become, and still is, the most marked, studied, and unquestioned response of the atmosphere observed during solar eclipses (along with solar radiation whose fall currently precedes the temperature) in history up to the present [7,51,52]. It is conclusive that, by and large, all these studies have shown that a temperature drop (or anomalies) and lag vary in wide magnitudes and fashions depending on the local environmental, meteorological, geographical, and astronomical circumstances (see e.g., [50,[53][54][55][56][57][58]).…”

Review—Recent Development of WO3 for Toxic Gas Sensors Applications

“…226 If the required activation energy has been met, the electrons will more easily move to the conduction band and contribute to the transduction function. 4 The amount of electric charge that can be carried by it also depends on the barrier formed as a result of the expansion of the electron depletion layer. This layer can be formed as a result of chemisorption such as adsorption and molecular desorption of the target gas detected by the WO 3 based sensor.…”

“…1 Many solutions have been carried out even with intense development, starting from creating environmentally and friendly technology thus it does not produce waste that pollutes the air and developing toxic gas detection sensors as a way to monitor the air contaminated by these dangerous gases 2,3 Several contaminant gases that are harmful to humans such as nitrogen oxide (NOx), carbon monoxide (CO), sulfur dioxide (SO 2 ), hydrogen sulfide (H 2 S), acetone, hydrogen, ammonia, and volatile organic compound (VOC) can be formed as a result of the residues of chemical reaction in industries, can also be produced by home product, even some others are formed naturally without human role. 4,5 Research on gas sensor fabrication has been carried out a lot by researchers around the world recently. In fact, with the emergence of many new viruses such as the coronavirus which attacks the human respiratory organs, sensors for detecting harmful gases are increasingly being researched and developed, because the contaminated air can increase the fatality for patients with diseases caused by the coronavirus, 6 so that the development of toxic gas sensors is important to do as a monitoring and prevention step.…”

Assessment of spectra of solar radiation during the partial solar eclipse of 21 June 2020 at, Tanta, Egypt

“…During the last two decades, several authors performed extensive 3-D radiative transfer modelling of total solar eclipses, taking into account solar limb darkening (Nezval and Pavelka 2017;Ojobo et al 2017;Pakkattil et al 2020;Peñaloza-Murillo et al 2020;Romano et al 2017). The spectral behaviour of sunlight reaching a ground sensor located in or close to the total Moon shadow and the importance of the various (3-D) transfer radioactive components occurs in this work (Romano et al 2017;Zerefos et al 2000).…”