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Acronyms and Abbreviations ADAPT Atmospheric Data and Parameterization Tool - NARAC AERMIC AMS-EPA Regulatory Model Improvement Committee AERMOD AERMIC Dispersion Model AFTOX U.S. Air Force Toxic Dispersion Model ALOHA Areal Locations of Hazardous Atmospheres - EPA/NOAA ANATEX North America Tracer Experiment ARPS Advanced Regional Prediction System model BASC Board on Atmospheric Sciences and Climate BT Burk-Thompson parameterization CALMET California puff Meteorology module - EPA CALPUFF California Puff dispersion module - EPA CAMEO Computer-Aided Management of Emergency Operations - EPA/NOAA CAPTEX Cross Appalachian Tracer Experiment CATS-JACK Consequence Assessment Tool Set-Joint Assessment of Catastrophic Events - DTRA C/B/N chemical/biological/nuclear CFD Computational Fluid Dynamics CMAQ Community Multiscale Air Quality Model - EPA COAMPS Coupled Ocean-Atmospheric Mesoscale Prediction System - Naval Research Laboratory CRSTER a standard Gaussian-plume model - EPA DEGADIS Dense Gas Dispersion Model - EPA DOD Department of Defense DOE Department of Energy DP26 Dipole Pride 26 field experiment DTRA Defense Threat Reduction Agency ECMWF European Center for Medium-Range Weather Forecasting EPA Environmental Protection Agency EPIcode Emergency Prediction Information code Gaussian-plume model for chemical releases - NARAC/LLNL ETEX European Tracer Experiment FEM Finite Element Model 3 - NARAC/LLNL 57

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58 ATMOSPHERIC DISPERSION OF HAZARDOUS MATERIAL RELEASES FLUENT Commercial CFD model HIGRAD High resolution model for strong Gradient applications - LANL CFD model HOTSPOT Gaussian-plume model for radiological releases - NARAC/LLNL HPAC Hazard Prediction and Assessment Capability - DTRA HYSPLIT Hybrid Single-Particle Lagrangian Integrated Trajectory Model INPUFF Integrated Gaussian-Puff dispersion model - NARAC/LLNL IOP Intensive Operations Period IR infrared JEM Joint Effects Model K eddy diffusivity coefficient LANL Los Alamos National Laboratory LES large-eddy simulation technique used in CFD model LLNL Lawrence Livermore National Laboratory LOC (dosage) level of concern LODI Lagrangian Operational Dispersion Integrator particle dispersion model - NARAC LSM Land-Surface Model MATHEW/ADPIC Mass-Adjusted Three-Dimensional Wind Field/Atmospheric Dispersion by Particle-in-Cell MDCRS Meteorological Data Collection and Reporting System MDT mountain daylight time MIDAS-AT Meteorological Information and Dispersion Assessment System-Anti- ~ . 1 errorlsm MM5 Pennsylvania State University-NCAR mesoscale model MRF Medium-Range Forecast MUST Mock Urban Settings Test field experiment NARAC National Atmospheric Release Advisory Center NCAR National Center for Atmospheric Research NCEP National Centers for Environmental Prediction NEXRAD Next Generation Radar NOAA National Oceanic and Atmospheric Administration NOGAPS Navy Operational Global Atmospheric Prediction System NRC National Research Council NWP Numerical Weather Prediction NWS National Weather Service OBDG Ocean Breeze Dry Gulch model OLAD Overland Atmospheric Dispersion field experiment OMEGA Operational Multiscale Environmental model with Grid Adaptivity - SAIC PATRIC Particle Trajectory-in-Cell model PDF Probability Density Function of a random variable Q-Q Quantile-Quantile QWIC-PLUME Fast Urban Dispersion Model, Dispersion Module - LANL QWIC-URB Fast Urban Dispersion Model, Meteorological Module - LANL RAMS Regional Atmospheric Modeling System RAN S Reynolds Averaged Navier-Stokes equation used in CFD model RASS Radio Acoustic Sounding System

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A CRONYMS AND ABBREVIATIONS RODOS Real-time Online Decision Support System SAFER Safety Assessment for Explosives Risk SAIC Science Applications International Corporation SCIPUFF Second-order Closure Integrated Puff model - EPA TKE turbulent kinetic energy UAV unmanned aerial vehicle UHF ultra-high frequency URBAN 2000 Field campaign to study the urban environment and its effect on atmospheric dispersion VLSTRACK Chemical/biological agent Vapor, Liquid and Solid Tracking model - DOD VTMX Vertical Transport and Mixing Experiment WSR-88D Weather Surveillance Radar-1998 Doppler 59