AQS AQS Meteorology & Atmospheric Science 2

Question 1

The Gaussian plume dispersion model assumes pollutants spread in what mathematical pattern crosswind?

Accepted Answer

Normal (bell-curve) distribution

Answer

Gaussian dispersion models assume a normal distribution of pollutant concentrations in both the horizontal and vertical crosswind directions from a plume centerline.

Question 2

Fumigation in air quality meteorology refers to:

Accepted Answer

Rapid downward mixing of an elevated plume to ground level

Answer

Fumigation occurs when an elevated plume is trapped beneath a temperature inversion and is mixed to the surface by turbulent eddies, causing sharp ground-level concentration spikes.

Question 3

What role does solar radiation play in ground-level ozone formation?

Accepted Answer

It provides energy to drive photochemical reactions between NOx and VOCs

Answer

Ultraviolet solar radiation catalyzes the photochemical reaction between nitrogen oxides (NOx) and volatile organic compounds (VOCs) to produce ground-level ozone.

Question 4

Sea breeze circulation typically affects coastal air quality by:

Accepted Answer

Recirculating inland pollutants back to coastal areas in the evening

Answer

Daytime sea breezes carry coastal pollutants inland; overnight land breezes can return processed pollutants seaward, causing recirculation and elevated concentrations.

Question 5

In Gaussian dispersion modeling, effective stack height accounts for:

Accepted Answer

Physical stack height plus plume rise due to buoyancy and momentum

Answer

Effective stack height equals the physical stack height plus plume rise, which depends on exit velocity, temperature excess, and atmospheric stability.

(AQS) Air Quality Specialist Certification Practice Test

(AQS) Air Quality Specialist Certification Practice Test

AQS AQS Meteorology & Atmospheric Science 2