Simulation of Organic Chemical Movement in Hawaii Soils with PRZM: 3. Calibration

Abstract

his is the third and final part of a multipart paper reporting testing of the EPA's Pesticide Root Zone Model (PRZM) using data from Hawaii. PRZM is a dynamic-conceptual pesticide leaching model. In the first and second parts of the paper results were reported for predicted pesticide movement based upon preliminary PRZM simulations. In this part of the paper a trial-and-error calibration of PRZM is reported for a site in Hawaii. Performance results from the model calibration exercise are quite poor, illustrating the need for multicriteria evaluation procedures.