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CALPUFF View

  • February 17, 2020

CALPUFF View: Mapping Land Use Data in Shapefile Format

Land use data is vital to air quality modeling because the types of land cover encountered within the modeling domain play a big role in calculating atmospheric stability. Turbulence parameterization will be very different in a heavily populated urban area compared to a flat, grassy field or a large body of water. Digital land use data is available in a wide variety of formats, and the new CALPUFF View Version 9.0 now allows users to import land use data in shapefile format.

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  • January 15, 2020

CALPUFF View: Modeling Sub-Hourly Time Steps

In past modeling tips, we have discussed how to estimate sub-hourly pollutant concentrations using AERMOD, a Gaussian plume dispersion model with an hourly minimum time step. Now we look at how a similar concept can be modeled using a different modeling system – CALPUFF.

  • September 16, 2019

Lakes Software Applications: Plant Blanking Boundary Layer

When viewing results from an air dispersion model run, the primary concern of many modelers are conditions measured at receptors located in areas generally accessible by the public. This may preclude modeling from occurring within well-defined property boundaries that restrict public access to a facility.

  • April 15, 2019

Lakes Software Applications: Using the Lakes Project Backup Utility

Most air dispersion modeling analyses will result in a large number of data files. Besides input and output files, projects can contain meteorological data, terrain data, digital base maps, and other external data files. Whether you’re modeling a simple scenario in AERMOD or a complex regional study in CALPUFF, there will be many different file types to account for.

  • January 15, 2019

CALPUFF View: Using the Background Data File Maker Utility

When using CALPUFF, modelers can add hourly background concentration or deposition flux values to the modeled results before averages are processed in CALPOST. Lakes Environmental added a Background Data File Maker utility to CALPUFF View to make this process even easier.

  • November 15, 2018

CALPUFF View: Sensitive Receptor Summary Report

When conducting an air quality modeling analysis, you may be called on to compute concentrations at sensitive receptors. While specific definitions of sensitive receptors vary from one jurisdiction to the next, it most commonly refers to receptors used in a modeling analysis to represent a sensitive population. Examples include schools, daycare facilities, hospitals, care facilities, and more.