Accession Number : ADA308771

Title :   Multiscale Environmental Dispersion Over Complex Terrain The MEDOC Models.

Descriptive Note : Technical rept. 9 Sep 92-31 Mar 95,

Corporate Author : SCIENCE APPLICATIONS INC WAYNE PA APPLIED MECHANICS OPERATION

Personal Author(s) : Sontowski, John ; Dougherty, Catherine

PDF Url : ADA308771

Report Date : MAY 1996

Pagination or Media Count : 106

Abstract : This report describes a capability called MEDOC which includes a suite of codes used for the assessment/ prediction of Multiscale Environmental Dispersion Over Complex Terrain. The codes which were originally developed by and for the nuclear power industry have been adapted under a program described in this report, to a broader range of problems involving chemical and biological, as well as nuclear, sources which are of concern to the U.S. Defense Nuclear Agency (DNA) and the national defense community. MEDOC can operate in either a prognostic or diagnostic mode, providing both the meteorological and the concentration transport/dispersion fields over a range of atmospheric scales from local (approx 10's of KM), to regional (approx 1OO's of KM). Alternate methodologies, from first principles based to more approximate, are provided to allow various degrees of fidelity and computational efficiency. Thus MEDOC provides appropriate models for a variety of applications such as guidance for local scale emergency response, forecasts for regional scale impacts, and future planning studies. The codes are operational on either a super computer (CRAY), or a workstation level platform (IBM RlSC16000), and have been installed on workstations where they are exercised by DNA personnel.

Descriptors :   *COMPUTER PROGRAMS, *DISPERSIONS, *TERRAIN MODELS, METHODOLOGY, DEPARTMENT OF DEFENSE, COMPUTATIONS, INDUSTRIES, EMERGENCIES, DISPERSING, IMPACT, EFFICIENCY, TERRAIN, METEOROLOGICAL DATA, PLATFORMS, RESPONSE, SCALE, NUCLEAR POWER PLANTS, WORK STATIONS, DIAGNOSIS(GENERAL), NATIONAL DEFENSE.

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE