Development of the MESOPUFF II dispersion model. Final report

Technical Report · Sun Apr 01 04:00:00 EST 1984

OSTI ID:6555490

Scire, J S; Lurmann, F W; Bass, A; Hanna, S R

The development of the MESOPUFF II regional-scale air quality model is described. MESOPUFF II is a Lagrangian variable-trajectory puff superposition model suitable for modeling the transport, diffusion and removal of air pollutants from multiple point and area sources at transport distances beyond the range of conventional straight-line Gaussian plume models. It is an extensively modified version of the MESOscale PUFF (MESOPUFF) model. Major additions and enhancements include: use of hourly surface meteorological data and twice-daily rawinsonde data; separate wind fields to represent flow within and above the boundary layer; parameterization of vertical dispersion in terms of micrometeorological turbulence variables; parameterization of SO2 to SO4(-2) and NOx to NO3(-1) conversion, including the chemical equilibrium of the HNO3/NH3/NH4NO3 system; resistance modeling of dry deposition, including options for source or surface depletion; time- and space-varying wet removal; and a computationally efficient puff sampling function. The scientific and operational bases for these developments are described. The results of a preliminary evaluation of several model algorithms during a two-day period of the Tennessee Plume Study are also presented.

• Research Organization: Environmental Research and Technology, Inc., Concord, MA (USA)
• OSTI ID: 6555490
• Report Number(s): PB-84-184753
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AMMONIA
AMMONIUM COMPOUNDS
ATMOSPHERIC PRECIPITATIONS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMISTRY
DEPOSITION
DIFFUSION
ENVIRONMENTAL TRANSPORT
FUNCTIONS
HYDRIDES
HYDROGEN COMPOUNDS
KINETICS
LAGRANGIAN FUNCTION
LONG-RANGE TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
PLUMES
POLLUTION
RAIN
REACTION KINETICS
SULFUR COMPOUNDS
SULFUR OXIDES
TIME DEPENDENCE
WIND