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A new CALPUFF update by the US EPA recently published

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usepa calpuff 5 8s   The USEPA has approved an update of CALMET and CALPUFF from V5.8 (dated June 23, 2007) to V5.8.4 (dated July 31, 2013).

   CALPUFF is a multi-layer, multi-species non-steady-state puff dispersion model that simulates the effects of time- and space-varying meteorological conditions on pollution transport, transformation and removal.  CALPUFF can be applied on scales of tens to hundreds of kilometers.  It includes algorithms for subgrid scale effects (such as terrain impingement), as well as, longer range effects (such as pollutant removal due to wet scavenging and dry deposition, chemical transformation, and visibility effects of particulate matter concentrations).

A new update on CALPUFF. The version 7 of this lagrangian model is here.

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calpuff v7   The 22nd of June 2015, a new version of the CALPUFF software has been released. The Version 7 of the CALPUFF modeling system contains many new features. The model updates introduce new source types including roadways and flare modeling. The new pre-processor SURFGEN which can process sub-hourly ASOS data and the post-processors CALRANK, CALAVE and CALMAX are also now available.

   This version 7 includes all the new features introduced in Version 6 (which is now being deprecated), such as the ISORROPIA (now updated to v2.2) inorganic gas-particle equilibrium model, aqueous phase chemistry and an anthropogenic secondary organic aerosol (SOA) module based on the CMAQ/MADRID model; options to use sub-hourly time steps for both meteorological and emissions data, nested grid capabilities; an option in CALPOST to compute daily peak one-hour concentration values consistent with the new U.S. 1-hour SO2 and NO2 standards.

Aerscreen special offer for our readers. Do not miss this opportunity!

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enviroware  AerscreenEZ is a friendly Graphical User Interface (GUI) for the AERSCREEN model, the screening version of US-EPA AERMOD dispersion model. Aerscreen EZ is a great tool if you do not have met data available and there is no need for a more advanced dispersion model provided that you have the right requirements.

  AERSCREEN calculates the ground level concentrations (GLCs) for the plume centerline of a single source. The calculations are done by AERMOD, which is forced to work in screening mode, in this way the worst-case concentrations are calculated.

  Besides AERSCREEN, AerscreenEZ seamless interfaces all the programs needed to carry out a simulation: MAKEMET (meteorological conditions), AERMAP (terrain information processing), AERSURFACE (surface characteristic), BPIPPRM (building effect) and AERMOD (air dispersion simulations).