Some Restrictive Meteorological Conditions to be Considered in the Design of Stacks

Bierly, Eugene W.; Hewson, E. Wendell

doi:10.1175/1520-0450(1962)001<0383:srmctb>2.0.co;2

Cited by 43 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solution of equation (3) for the dispersion of an instantaneous point-source release of material is well known in the atmospheric dispersion literature (Monin and Yaglom, 1971;Seinfeld, 1986). Typically, a multiple-reflection solution is used in the vertical direction to account for reflection from both the ground and a limiting inversion height (Bierly and Hewson, 1962). However, for conservation of mass in a small room, three-dimensional reflection boundary conditions must be incorporated into the solution to account for reflection of the released material at all six wall surfaces in a room.…”

Section: Substituting Equation (2) Into Equation (1) Yields the Familmentioning

confidence: 99%

Modeling Indoor Air Exposure from Short-Term Point Source Releases

et al. 1996

View full text Add to dashboard Cite

We have developed a simplified analytical indoor air model that describes the concentrations as a function of position and time in a room following a short‐term release of airborne particles or gases. The indoor dispersion model considers the two main physical processes of (1) point‐source dispersion with reflection from all walls and (2) the general concentration decay in a room due to room ventilation and surface deposition of pollutants. Comparison of model predictions with experimental indoor measurements conducted by other researchers showed excellent agreement. This model should prove useful for human‐health risk estimations in which the inhalation dose resulting from an indoor, short‐term release of a contaminant needs to be calculated.

show abstract

Section: Substituting Equation (2) Into Equation (1) Yields the Familmentioning

confidence: 99%

Modeling Indoor Air Exposure from Short-Term Point Source Releases

et al. 1996

View full text Add to dashboard Cite

show abstract

“…The height of the inversion base is used to estimate the geostrophic drag coefficient [Overland, 1985;Overland and Davidson, 1992], which is needed as input to sea-ice models [Hibler and Bryan, 1987]. In case there is an elevated inversion, the air quality models should account for the multiple eddy reflections from both the ground and the stable elevated layer [Bierly and Hewson, 1962]. With surface-based inversion, the situation is quite different.…”

Section: Inversion Heightmentioning

confidence: 99%

Analysis of thermal inversions in the Khareef Salalah region in the Sultanate of Oman

Abdul‐Wahab

2003

J. Geophys. Res.

View full text Add to dashboard Cite

[1] Meteorology and topography (shape of the land) are two of the most important environmental factors that control the movement of pollutants in the atmosphere. A wellknown example of the importance of topography and meteorology is the so-called monsoon season in Salalah (Khareef Salalah) in the Sultanate of Oman. The purpose of this paper is to investigate the role of the elevated stable layer, particularly during monsoon season in Salalah. The study addresses the statistical analysis of inversion parameters. It will also improve our common understanding of the monsoon and how it is dominated by inversions. In this work, the monthly characteristics of inversions are investigated using the daily radiosonde measurements to a height of 2 km over a period of 1 year. Both surface-based and elevated inversions are investigated. Based on the analysis of data recovered from weather balloons, the study shows a strong monthly change in inversion frequency, depth, and strength. Overall, inversions are less common in summer (55.4% in May) than in winter (82.8% in January). The surface-based inversion frequency is at a minimum in summer and at a maximum in winter. The surface-based inversions reach a maximum depth in winter and are almost absent during summer. An opposite trend in elevated inversion is seen. Most summer inversions are elevated, and a maximum in their frequencies is found during May to September. The elevated inversions are generally deeper and stronger than the surface-based inversions. The correlation coefficient for the relationships between the inversion depth and temperature difference across the inversion was determined for both the surface-based and elevated inversions. It was 0.82 for the surface-based inversion, whereas it was appreciably lower (0.39) for the elevated inversion. Moreover, the correlation coefficient between the log inversion depth and the log temperature difference across the elevated inversion was high (i.e., 0.75).

show abstract

“…The model is therefore comprised of two parts--a nighttime part whose purpose is to predict concentrations on the valley cross section at sunrise, and the daytime part which predicts concentrations on the valley floor and sidewalls during the post-sunrise temperature inversion breakup period. The temperature inversion breakup period has been identified by previous investigators [1] as a period when diurnal fumigations [2] can produce high pollutant concentrations in valleys.…”

Section: Disclaimermentioning

confidence: 99%

VALMET: a valley air pollution model. Final report. Revision 1

Whiteman¹,

Allwine²

1985

View full text Add to dashboard Cite

An air quality model is described for predicting air pollution concentrations in deep mountain valleys arising fro~ nocturnal down-valley transport and diffusion of an elevated pollutant plume, and the fumigation of the plume on the valley floor and sidewalls after sunrise. Included is a technical description of the model, a discussion of the model 1 5 applications, the required model inputs, sample calculations and model outputs, and a full listing of the FORTRAN computer program.

show abstract

Some Restrictive Meteorological Conditions to be Considered in the Design of Stacks

Cited by 43 publications

References 0 publications

Modeling Indoor Air Exposure from Short-Term Point Source Releases

Modeling Indoor Air Exposure from Short-Term Point Source Releases

Analysis of thermal inversions in the Khareef Salalah region in the Sultanate of Oman

VALMET: a valley air pollution model. Final report. Revision 1

Contact Info

Product

Resources

About