Thorney Island: Its geography and meteorology

Davies, Martin; Singh, Sarvesh Kumar

doi:10.1016/0304-3894(85)85034-2

Cited by 23 publications

(2 citation statements)

References 13 publications

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“…Data classification was performed using the modified Pasquill-Gifford classification (Davies & Singh, 1985), which has six categories, from very unstable (A) to extremely stable (G). And due to the almost zero or absolute absence of radiation when it does not affect the ground, the classification considers two times, day and night.…”

Section: Data Classificationmentioning

confidence: 99%

Estimation of atmospheric stability for the city of Zacatecas, Mexico

Ramírez-Díaz

Flores

Flores-Jiménez³

et al. 2022

Renew. energ. biomass sustain

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In the present work, due to the importance of the dispersion of pollutants in the air, the modified Pasquill-Gifford classification was used to determine the classes of atmospheric stability, which serve to indirectly identify the increase or decrease of the existing mechanical and convective turbulence, conditions that at the same time affect the dispersion of pollutants; the above was carried out in the municipality of Zacatecas in the years of 2019 and 2020; the data of concentrations of Carbon monoxide (CO), sulfur dioxide (SO2), nitrogen oxides (NOX), PM10 and PM2.5 particles, and ozone (O3) released from a monitoring station and were contrasted with the estimated atmospheric stability classes in order to observe the influence of these classes on these pollutants; and finally, based on the results obtained, it was identified in which seasons of the year there is a greater and lesser dispersion of pollutants. Once this process was carried out, a series of recommendations were issued about the feasibility of using this classification in the city of Zacatecas. Maximum frequencies of class A were obtained between 9:00 and 12:00 hours, considered the most unstable with 52.22% for spring, 53.57% for summer, 44.87% for autumn, and 40% for winter. When class A increased its frequency, the concentration of particles decreased, and when class F increased, the concentration of particles increased. Therefore, it is recommended to consider different factors that may influence the dispersion of pollutants in the city of Zacatecas and, regarding the results obtained, make use of this classification only in hourly averages. Likewise, the Pasquill-Gifford classification could be combined with atmospheric models to determine the behavior of particles in different periods with greater confidence.

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Section: Data Classificationmentioning

confidence: 99%

Estimation of atmospheric stability for the city of Zacatecas, Mexico

Ramírez-Díaz

Flores

Flores-Jiménez³

et al. 2022

Renew. energ. biomass sustain

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“…In the 1970s and 1980s, many scholars conducted field experiments on gas leakage and diffusion, such as Burro [6][7][8][9], Coyote [10,11], Thorney Island [12][13][14][15][16][17], Maplin Sands [18], and Goldfish [19]. The general law of gas diffusion was concluded through the analysis of gas phenomena.…”

Section: Introductionmentioning

confidence: 99%

Study on Hazardous Areas of Hydrogen Fluoride Diffusion Based on CFD Simulation

Zhou

Zhang

et al. 2021

Processes

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Hydrogen fluoride (HF) is a typical dangerous gas in the fluorine chemical industry. Its leakage is one of the most common types of accidents in this industry, and it poses a serious threat to personnel safety and health, environmental sanitation, and social stability. In this paper, the process and consequences of an HF leakage accident in a fluorine chemical plant were simulated by using computational fluid dynamics (CFD) simulation software, and hazardous areas (lethal area, severe injury area, light injury area, and maximum allowable concentration area) of HF diffusion were determined according to the HF concentration corresponding to the degree of personal injury. Moreover, the effects of wind speed and height on hazardous areas were analyzed. The research results of this paper provide model support for similar enterprises to predict the consequences of harmful gas leakage accidents, and give suggestions on emergency evacuation and rescue work, which have practical application significance.

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