Meteorological range

The term r is known as the visual range and has units of length. Since in actuality concentration can vary over the distance between the object and the observer, r should more properly be called the meteorological range (Charlson et al., 1967). 

What is the meteorological range in particle-ffee air at 20 C at sea level Assume that X = 0.5 pm. 

A logic model that graphically portrays the range of outcomes from the combinations of events and circumstances in an accident sequence. For example, a flammable vapor release may result in a fire, an explosion, or in no consequence depending on meteorological conditions, the degree of confinement, the presence of ignition sources, etc. These trees are often shown with the probability of each outcome at each branch of the pathway... 

Zannetti, P., Tombach, I. H., and Cvencek, S. ]., An analysis of visual range in the eastern United States under different meteorological regimes. /, Air Pollut. Control 39,... 

When using the automated distance array, SCREEN prompts the user for a minimum and maximum distance to use, which should be input in free format, i.e., separated by a comma or a space. SCREEN then calculates the maximum concentration across a range of meteorological conditions for the... 

Tables 7 and 8 give the short-term ground level concentrations for a 3-minute venting at 1/2, 1.0, 1-1/2, 2.0, and 5 miles from the discharge point respectively. The calculations assume meteorological conditions to be constant for approximately 10-minutes. Values in Tables 7 and 8 were computed for the six stability classes over a range of wind speeds.

WRPLOT is an interactive program tliat generates wind rose statistics and plots for selected meteorological stations for user-specified date and time ranges. A wind rose depicts die frequency of occurrence of winds in each of 16 direction sectors (north, nordi-northcast, nordieast, etc.) and six wind speed classes for a given location and time period. 

Ear from being just the processing of water on Earth, this cycle is the basis for a wide range of meteorologic, geochemical, and biological systems. Water is the transport medium for all nutrients in the biosphere. Water vapor condensed into clouds is the chief control on planetary albedo. The cycling of water is also one of the major mechanisms for the transportation of sensible heat (e.g. in oceanic circulation) and latent heat that is released when water falls from the air. 

Note Actual fallout ranges depend on local meteorological conditions. Fallout direction relative to ground zero can be highly variable. 

From equation (3.13) we can deduct a rough approximation of the location where maximum ground-level concentration occurs. It is argued that the turbulent diffusion acts more and more on the emitted substances, when the distance from the point source increases therefore the downwind distance dependency of the diffusion coefficients is done afterwards. If we drop this dependency, equation (3.13) leads to xmax=34,4 m for AK=I (curve a) and xmax=87,7 m for AK=V (curve b), what is demonstrated in fig n The interpolated ranges of measured values are lined in. Curve a overestimates the nondimensional concentration maximum, but its location seems to be correct. In the case of curve b the situation is inverted. Curve c is calculated with the data of AK=II. The decay of the nondimensional concentration is predicted well behind the maximum. Curve d is produced with F—12,1, f=0,069, G=0,04 and g=l,088. The ascent of concentration is acceptable, but that is all, because there is no explanation of plausibility how to alter the diffusivity parameters. Therefore it must be our aim to find a suitable correction in connection with the meteorological input data. 

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