Application of circuit model for Taipei city PM10 simulation

This study simulated PM10 concentrations in Taipei City from September 1990 to June 1992, by using a circuit model developed by Tsuang and Chao. Simul ation results demonstrated that the scheme performs better than a box model . The correlation coefficient between observed and predicted values was 0.6 1 with a standard error of 60 mu g m(-3). The mean treatment score of succe ssful predictions of high PM10 concentrations (exceeding 125 mu g m(-3)) wa s 58%. Fine particulates were found to be the major contributor toward haza rdous air quality, under a stable, low wind speed and rainless atmosphere. In addition, the ill-mixed factor was found to be zero. The circuit model i s close to a box model equation under an unstable atmosphere where the mixi ng height is much higher than the surface layer. (C) 1999 Elsevier Science Ltd. All rights reserved.