dc.description.abstract | Horizontal transport is a key factor in air pollution over Taiwan. This paper describes a two-dimensional Lagrangian particle controlling dispersion model, Windmodel, which has been developed by the Atmospheric Chemistry Modelling Lab, Institute of Atmospheric Physics, National Central University. Twenty-three experimentations have been designed for sensitivity test of the Windmodel. Twenty-three experimentations include time-step sensitivity test, simulation and sampling period sensitivity test, simulation region sensitivity test, spatial analysis sensitivity test, data of wind observation sensitivity test, and particle release sensitivity test.
In this paper we present simulations with the Windmodel to study the characteristic of the air quality in Taipei area in spring season of April 21 to May 20 in 2006 and 2007, respectively. Amount of particles in the region which is fifteen kilometers around the Environmental Protection Administration Guting station are compared with the average of air quality observation. The results display two kinds of characteristic. One shows a daily peak pattern with a large number of particles, and the other one shows flat pattern with a few number of particles. The daily peak patterns are associate dwith local pollutant emissions in Taiwan, while the flat patterns are associated with long range transport from China. | en_US |