Hybrid single-particle Lagrangian integrated trajectories (HY-SPLIT): Version 3. 0 - user's guide and model description. Technical memo

Technical Report · Mon Jun 01 00:00:00 EDT 1992

OSTI ID:7161263

Draxler, R R

The algorithms and equations used in the calculation of long-range pollutant transport and dispersion are presented from the meteorological data sources through the calculation of air concentrations. The model calculation methods are a hybrid between Eulerian and Lagrangian approaches. A single pollutant particle represents the initial source. Advection and diffusion calculations are made in a Lagrangian framework. As the dispersion of the initial particle spreads it into regions of different wind direction or speed, the single particle is divided into multiple particles to provide a more accurate representation of the complex flow field. Air concentrations are calculated on a fixed three dimensional grid by integrating all particle masses over the sampling time. The model code can be run on a personal computer.

• Research Organization: National Oceanic and Atmospheric Administration, Silver Spring, MD (United States). Air Resources Lab.
• OSTI ID: 7161263
• Report Number(s): PB-92-218114/XAB; NOAA-TM-ERL-ARL-195
• Resource Relation: Other Information: See also PB89-127591
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
LONG-RANGE TRANSPORT
MATHEMATICAL MODELS
POLLUTANTS
AIR POLLUTION
ALGORITHMS
DIFFUSION
EQUATIONS
LAGRANGIAN FUNCTION
MANUALS
TRAJECTORIES
WIND
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FUNCTIONS
MASS TRANSFER
MATHEMATICAL LOGIC
POLLUTION
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)