The models in this section include AERSCREEN, COMPLEX1, CTSCREEN, RTDM3.2, SCREEN3, TSCREEN, VALLEY, and VISCREEN.The model will produce estimates of worst-case 1-hour concentrations for a single source, without the need for hourly meteorological data, and also includes conversion factors to estimate worst-case 3-hour, 8-hour, 24-hour, and annual concentrations.
AERSCREEN is intended to produce concentration estimates that are equal to or greater than the estimates produced by AERMOD with a fully developed set of meteorological and terrain data, but the degree of conservatism will vary depending on the application. Epa Dispersion Models Code Including TheAERSCREEN (Version 16216) code including the latest MAKEMET code (Version 16216) is provided below along with documentation and test cases. The MAKEMET program interfaces with AERSCREEN to generate a site-specific matrix of screening meteorological conditions based on user inputs for input into AERMOD. Please note that before using AERSCREEN, users must have the latest AERMOD executable (09292 or later) as well as the AERMAP terrain preprocessor and BPIPPRM executables. ![]() It contains 3 models: SCREEN3, PUFF, and RVD (Relief Valve Discharge). Users can email questions, comments, suggestions, or improvements to misenis.chrisepa.gov. As necessary, we may provide updates for certain programs when necessary, but we are not currently supporting or maintaining these programs for regulatory applications. AERCOARE can read overwater measured hourly meteorological data or predicted hourly meteorological data from the Mesoscale Model Interface (MMIF) program. The output from AERCOARE is used by the AERMOD dispersion program in a marine environment. An AERMOD-COARE approach was recently approved by the U.S. Epa Dispersion Models Free Environment WithEnvironmental Protection Agency (EPA) Region 10 as an alternative model to OCD for application in an Arctic ice-free environment with concurrence from the EPA Model Clearinghouse. Please reference the 2011 Model Clearinghouse formal action, record number 11-X-01. In that application, the COARE algorithm was applied to overwater measurements and the results assembled in a spreadsheet. AERCOARE replaces the need for post-processing with a spreadsheet, provides support for missing data, adds options for the treatment of overwater mixing heights, and can consider many different input data formats. These draft programs support non-regulatory use and evaluation of dispersion models by the modeling community. Any proposed regulatory use of AERCOARE in providing inputs to dispersion models must be done in accordance with Appendix W and approved by the appropriate reviewing authority on a case-by-case basis. Beta users should send comments and any issues they find to Herman Wong of EPAs Region 10 Office. Users can email questions, comments, suggestions, or improvements to wong.hermanepa.gov. AERMAP processes commercially available Digital Elevation Data and creates a file suitable for use within an AERMOD control file. ![]() Receptors and contours are plotted and colored according to the respective concentrations. Version 16216 is the latest release version, but it is still being tested throughout the user community. In case of unforeseen bugs or issues, Version 13329 is also being maintained at this time. This most recent version of BPIP, 42104, has been upgraded with allocatable arrays while maintaining the basic functionality of the program. The input structure of BPIPPRM is the same as that of BPIP and is often used with the ISC3 model. ![]() These new files can then be visualized using the Visualization Environment for Rich Data Interpretation (VERDI). Exit The CALMET2NCF users guide documents the program functionality, installation instructions, and shows example illustrations of CALMET output. There are currently 2 distributions of this code, one with all third party libraries (CALMET2netCDFLibraries.tar.gz) and one with just pre-compiled executables (CALMET2netCDF.tar.gz). We will be providing an overview of these beta programs as part of the 10th Modeling Conference in mid-March 2012 and welcome comments on these tools. Beta users should send comments and any issues they find to Chris Misenis of EPAAQMG. Users can email questions, comments, suggestions, or improvements to misenis.chrisepa.gov. As necessary, we may provide updates for certain programs when necessary, but we are not currently supporting or maintaining these programs for regulatory applications.
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