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).

 

   This update includes portions of code changes recognized as bug fixes. All other code changes (enhancements and new features) are not included at this time. A Modification of CALPUFF and CALMET Memorandum is available and describes bug fixes versus enhancements in this update of CALPUFF and CALMET. 

  Regarding odours, Version 6 of CALPUFF (not EPA-approved) is the only one so far that includes options to use sub-hourly time steps for both meteorological and emissions data and nested grid capabilities.    For more information, check the USEPA Support Center for Regulatory Atmospheric Modeling website.

 

 

 

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