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Results 1 - 10 from 165 for ground level concentrations in 0.253 sec.

GAIA Model Base SHORTZ: Short Term Dispersion Model
Model DESCRIPTION The air quality model SHORTZ uses a simple gaussian plume formulation to evaluate ground level concentrations due to up to 300 point and area sources in urban and rural areas with ...
www.ess.co.at

Mike Lyons & Associates Pty Ltd Environmental Consulting Chemists
As part of our plume dispersion model we produce contour maps of ground level concentrations (GLC's) using dedicated software, with these contours overlaid on the local street map ... the difference between acceptance and rejection of an application. To see if the calculated ground level concentrations are below the statutory limits, check with your local authority. In Victoria, these ...
mikelyons.com.au

AirQUIS: EPISODE Model (long description)
The model calculates ground level hourly average concentrations as gridded values (using one or more user defined grids) and/or ... one or more background (regional) measurement values. Other input requirements None. Output quantities Hourly ground level concentrations and dry and wet deposition values for each pollutant and for each grid ...
nilu.no

Air Pollution Dispersion
Stable conditions mean less atmospheric mixing and therefore higher concentrations around ground level sources, but better dispersal rates, and therefore lower ground level concentrations ...
www.enviropedia.org.uk

OzoneNY - Ground-level Ozone - how it's created
Ground-level Ozone - how it's created Ground-level Ozone happens when: Ground-level Ozone (O3) is created when nitrogen oxide gases (NOx) react with volatile organic ... concentrations usually occur in the early afternoon and continue into early evening from May through September. Ozone alerts are announced by the New York State Department of Transportation when ground-level ozone concentrations ...
www.ozoneny.org

Mobile laboratory in areas of maximum concentrations
For monitoring the ... and the level of pollution will on average be proportional to the volume of traffic. Time-series of hourly concentrations should reflect the pattern of traffic intensity. The highest concentrations for 24- ...
nilu.no

Ground-level Ozone (Smog) Information | New England | US EPA
Ground-level ozone is formed by a chemical reaction between VOCs and oxides of nitrogen (NOx) in the presence of sunlight. Ozone concentrations can reach unhealthful levels ... reduce pollution. Sign up for EPA's Air Quality Alert The Ozone Problem High concentrations of ozone near ground level can be harmful to people, animals, crops... more Daily Air Quality Index Real ...
epa.gov

Air Quality Alert Program | Ground-level Ozone | New England | US EPA
Air Quality Alerts are also issued during times when ground-level ozone and/or fine particle concentrations ...
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