Canarina Environmental Software

Canarina DISPER Software · air pollution · algorithms 2


Courtesy of Courtesy of Canarina Environmental Software


Software · air pollution · algorithms 2


Symbol / Definition

Ly= Initial plume length for Schulman-Scire downwash sources with enhanced lateral plume spread (m)

Lb= Lesser of the building height and crosswind projected building width (m)

_= Alongwind length of open pit source (m)

P(x,y)= Profile adjustment factor (dimensionless)

p= Wind speed power law profile exponent (dimensionless)

QA= Area Source pollutant emission rate (g/s)

Qe= Effective emission rate for effective area source for an open pit source (g/s)

Qi= Adjusted emission rate for particle size category for open pit emissions (g/s)

Qs= Pollutant emission rate (g/s)

Qt= Total amount of pollutant emitted during time period t (g)

R= Precipitation rate (mm/hr)

Ro= Initial plume radius for Schulman-Scire downwash sources (m)

R(z,zd)= Atmospheric resistance to vertical transport (s/cm)

r= Radial distance range in a polar receptor network (m)

ra= Atmospheric resistance (s/cm)

rd= Deposition layer resistance (s/cm)

s= Stability parameter = FUNC {g {{¶ theta}/¶z } over {T_a}}

S= Smoothing term for smoothing across adjacent sectors in the Long Term model (dimensionless)

SCF= Splip correction factor (dimensionless)

Sc= Schmidt number = FUNC { upsilon /D_B }


St= Stokes number (dimensionless)

Ta= Ambient temperature (K)

Ts= Stack gas exit temperature (K)

uref= Wind speed measured at reference anemometer height (m/s)

us= Wind speed adjusted to release height (m/s)

u*= Surface friction velocity (m/s)

V= Vertical term of the Gaussian plume equation (dimensionless)

Vd= Vertical term with dry deposition of the Gaussian plume equation (dimensionless)

vd= Particle deposition velocity (cm/s)

vg= Gravitational settling velocity for particles (cm/s)

vs= Stack gas exit velocity (m/s)

X= X-coordinate in a Cartesian grid receptor network (m)

xo= Length of side of square area source (m)

Y= Y-coordinate in a Cartesian grid receptor network (m)

q= Direction in a polar receptor network (degrees)

x= Downwind distance from source to receptor (m)

xy= Lateral virtual point source distance (m)

xz= Vertical virtual point source distance (m)

xf= Downwind distance to final plume rise (m)

x*= Downwind distance at which turbulence dominates entrainment (m)

y= Crosswind distance from source to receptor (m)

z= Receptor/terrain height above mean sea level (m)

zd= Dry deposition reference height (m)

zr= Receptor height above ground level (i.e. flagpole) (m)

zref= Reference height for wind speed power law (m)

zs= Stack base elevation above mean sea level (m)

zi= Mixing height (m)




Canarina DISPER Software · air pollution

It is interesting for water treatment, wastewater treatment, electronic waste, sludge, drinking water, sewage, landfills, monitoring systems, health and safety, carbon monoxide control, environmental consulting, water quality, environmental services, Air Quality Control, wastewater treatment plants, hazardous waste, environmental management, storage tanks, waste treatment, air pollution, solid waste, stormwater, pollution control, power plants, volatile organic compounds, sediments, environmental engineering, environmental impact, environmental regulations, water treatment plants, environmental technologies, waste disposal, irrigation, environmental assessments, industrial wastewater, carbon dioxide, information systems, regulatory compliance, safety cans, crushers, environmental monitoring, indoor air, environmental sciences, geology, methane, floods, indoor air quality, incineration, suspended solids and greenhouse gas.


Customer comments

No comments were found for Canarina DISPER Software · air pollution · algorithms 2. Be the first to comment!