ΟΙ ΣΥΝΕΡΓΑΤΕΣ ΠΟΥ

CALPUFF View

Complete Interface for Puff Dispersion Modeling with CALPUFF/CALMET and CALPOST

CALPUFF View supports the EPA approved version 5.8 and the advanced version 6.0 of the CALPUFF system and includes powerful and independent QA tools, stunning report ready results and a wide range of visualization options.

CALPUFF is a sophisticated model and is used in many modeling scenarios,

The CALPUFF modeling system has 3 main components:

• CALMET (a diagnostic 3-D meteorological model)
• CALPUFF (the transport and dispersion model)
• CALPOST (a postprocessing package) 
  
  This system is a comprehensive modeling tool that includes meteorological and geophysical data processors, a meteorological model, a puff-based dispersion model, and post-processing modules. 
  
  

including:

• Toxic pollutant deposition
• Visibility assessments
• Complex terrain
• Secondary pollutant formation
• Long range and overwater transport
• Building downwash
• Costal interaction effects
• Dry deposition
• Fumigation conditions
• Chemical transformation
• Sub-hourly time steps

CALPUFF View is a PRE- and POST-Processor for CALPUFF.

The CALPUFF modeling system has 3 main components:

1. CALMET (a diagnostic 3-D meteorological model)
2. CALPUFF (the transport and dispersion model), and
3. CALPOST (a postprocessing package).

This system is a comprehensive modeling tool that includes meteorological and geophysical data processors, a meteorological model, a puff-based dispersion model, and post-processing modules.

CALPUFF is already in use to model numerous air quality scenarios, including:

• Toxic pollutant deposition
• Near-field impacts from 
  • point
  • line
  • area
  • volume sources
• Forest fire impacts
• Visibility assessments
• Long range transport studies.

• Complete pre- and post-processor interface for CALPUFF & CALMET
• Up to 100 times easier to use than plain CALPUFF & CALMET.
• Transparently integrates all geophysical data (terrain, land use, meteorology).
• Automatically downloads maps and terrain data from the Web.
• Outstanding post-processors: such as 3D-wind fields, contour plots, XY graphics, and puff representations.
• See terrain and results in photo-realistic and animated tools (zoom, rotate, print).
• Reads output files from CALMET, CALPUFF, and CALGRID.
• Point, area, volume, and line sources.
• Non-steady-state emissions and meteorological conditions.
• Calm wind algorithm.
• 
  
  
• Causality effects.
• Efficient sampling functions.
• Dispersion coefficient options.
• Boundary layer turbulence.
• Vertical wind shear.
• Plume rise.
• Building downwash
• Subgrid scale complex terrain (CTDM)
• Dry Deposition
• Overwater and coastal interaction effects.
• Chemical transformation options
• Wet removal
• Visibility
• Graphical User Interfaces
• 
  
  
• Buoyant area source algorithm
• Buoyant line source capability
• Wind shear effects - Puff splitting
• ISC input conversion program
• BPIP interface
• Split sigmas
• Output data compression
• Recent Developments - CALMET
• MM4/MM5 interface
• Use of satellite cloud data
• Similarity theory options
• Map factors
• Interpolation of precipitation data
• Slope flow improvements
• Terrain angle, orientation and shadowing effects.

A preliminary consideration on advantages of a puff model, such as CALPUFF, over plume models such as ISCST3 should be based on the following modeling requirements:

• Whether the straight-line steady-state assumptions on which a plume model is based are valid.
• Transport distances.
• Potential for temporally and/or spatially varying flow fields due to influences of complex terrain.
• Non-uniform land use patterns.
• Coastal effects.
• Calm winds and stagnation conditions.
• Variable wind directions.

For cases involving a high degree of spatial variability of the flow within the boundary layer, such as upslope or downslope flows or flows along a winding river valley, the straightline, steady state assumption may not be valid beyond even a few kilometers, and a puff model may be more appropriate.

Puff models have a more realistic presentation of dispersion than plume models.

Each of these programs has a graphical user interface (GUI). In addition to these components, there are several other processors that may be used to prepare:

• Geophysical (land use and terrain) data in many standard formats,
• Meteorological data (surface, upper air, precipitation, and buoy data), and
• Interfaces to other models, like Penn State/NCAR Mesoscale Model (MM5).

• Complex Terrain
• Stagnation, inversion, recirculation, and fumigation conditions.
• Overwater transport
• Coastal conditions
• US EPA recommended model for Long Range Transport.
• Near-fields impacts
• Visibility assessments
• Class I area impact studies
• Criteria pollutants modeling
• State Implementation Plan (SIP) applications.
• Secondary pollutant formation and particulate matter modeling.
• area and line sources.