Meteorological conditions and

Like frequency estimates, consequence estimates can have very large uncertainties. Estimates that vary by orders of magnitude can result from (1) basic uncertainties in chemical/physical properties, (2) differences in average vs. time-dependent meteorological conditions, and/or (3) uncertainties in the release, dispersion, and effects models. Some... 

This chapter explores the design of stacks from the point of view of the downwind observer whose task is to determine the connection between stack design, process emissions, meteorology, and, most important, environmental effects. Stacks must be designed to specifications based on meteorological conditions and environmental air quality standards, which may be quite umelated to process requirements... 

The principal factors which must be accounted for when designing a stack for air pollution control purposes are the dispersion and transport of the pollutants and the performance criteria against which the stack will be compared. These factors include (1) air quality standards, (2) meteorological conditions, and (3) topographical peculiarities. 

Meteorological conditions, as much as any other consideration, determine how a stack should be designed for air pollution control purposes. Operating transport mechanisms are determined by the micro meteorological conditions, and any attempt to predict ground-level pollutant concentrations is dependent on a reasonable estimate of the convective and dispersive potential of the local air. The following are meteorological conditions which need to be determined ... 

Any stack should be designed based on a knowledge of prevailing meteorological conditions and stack emission criteria based on years of operating... 

The maximum GLC as determined by equation 3 is dependent on specific meteorological conditions and downwind distance from the source. The critical GLC of a source is the maximum possible GLC that can occin regardless of meteorological conditions and downwind distance. 

Taha, H. Konopacki, S. and Gabersek, S. (1999). "Impacts of Large-Scale Surface Modifications on Meteorological Conditions and Energy Use A 10-Region Modeling Study. Theoretical and Applied Climatology 62 (3-4) 175-185. 

Consider meteorological conditions and the potential for contaminants to be blown from the area... 

Figure 5.1 illustrates the primary threats based on the explosion of a 10-kiloton nuclear weapon. The distances are taken from Tables 5.1 and 5.2 and are intended to illustrate the impact such a weapon would have if detonated in a populated area. No specific fallout radius is provided because it depends on yield, location, and meteorological conditions and is very difficult to predict. 

Wehner B, Wiedensohler A (2003) Long term measurements of submicrometer urban aerosols statistical analysis for correlations with meteorological conditions and trace gases. Atmos Chem Phys 3 867-879... 

Spatial distribution is mainly attributed to the differences in emission patterns, meteorological conditions and local topography of distinct city functional areas. Many studies have examined the effects of these differences. 

It is important for the public to recognize that there is no fixed distance or buffer zone for a safe distance to provide protection from spray drift. This will be a function of the pesticide being used, its toxicity and environmental behavior such as bioaccumulation, the nature and sensitivity of the downwind sites, and the nature of the application method, meteorological conditions, and so on. 

The third member of the equation should be studied further in relation to the meteorological conditions and other factors which are involved in the long-range transport of gaseous materials. 

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