– Australian meteorological data processor for AERMOD LADM – An advanced model developed by Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO) for simulating the dispersion of buoyant pollution plumes and predicting the photochemical formation of smog over complex terrain on a local to regional scale. The model can also handle fumigated plumes (see the books listed below in the "Further reading" section for an explanation of fumigated plumes). TAPM – An advanced dispersion model integrated with a pre-processor for providing meteorological data inputs. It can handle multiple pollutants, and point, line, area and volume sources on a local, city or regional scale. The model capabilities include building effects, plume depletion by deposition, and a photochemistry module. This model was also developed by Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO). DISPMOD – A Gaussian atmospheric dispersion model for point sources located in coastal regions. It was designed specifically by the Western Australian Department of Environment to simulate the plume fumigation that occurs when an elevated onshore pollution plume intersects a growing thermal internal boundary layer (TIBL) contained within offshore air flow coming onshore. AUSPUFF – A Gaussian puff model designed for regulatory use by CSIRO. It includes some simple algorithms for the chemical transformation of reactive air pollutants. Models developed in Canada MLCD – Modèle Lagrangien à courte distance is a Lagrangian particle dispersion model (LPDM) developed in collaboration by Environment Canada's Canadian Meteorological Centre (CMC) and by the Department of Earth and Atmospheric Sciences of University of Alberta. This atmospheric dispersion and deposition model is designed to estimate air concentrations and surface deposition of pollutants for very short range emergency problems (less than ~10 km from the source). MLDPn – Modèle Lagrangien de dispersion de particules d'ordre n is a Lagrangian particle dispersion model (LPDM) developed by Environment Canada's Canadian Meteorological Centre (CMC). This atmospheric and aquatic transport and dispersion model is designed to estimate air and water concentrations and ground deposition of pollutants for various emergency response problems at different scales (local to global). It is used to forecast and track volcanic ash, radioactive material, forest fire smoke, chemical hazardous substances as well as oil slicks. Trajectory – The trajectory model, developed by Environment Canada's Canadian Meteorological Centre (CMC), is a simple tool designed to calculate the trajectory of a few air parcels moving in the 3D wind field of the atmosphere. The model provides a quick