TY - JOUR ID - 13320 TI - - JO - Journal of the Earth and Space Physics JA - JESPHYS LA - en SN - 2538-371X Y1 - 2001 PY - 2001 VL - 27 IS - 1 SP - EP - KW - dispersion coefficients KW - dispersion of materials KW - Surface Roughness KW - unsteady atmospheric conditions DO - N2 - A computer program was developed to predict the dispersion of gaseous pollutant in the atmosphere. This program relies on puff method, and in order to consider the wind shear effects, the program has the ability to consider the complete dynamic and unsteady atmospheric conditions. Plume rise of hot pollutants due to buoyancy effects was also considered. The program has the ability to perform the real-time calculations and uses on-line data of atmospheric conditions that are measured directly. In order to consider the effects of the presence of buildings and other obstacles or sudden changes in surface roughness by the dispersion of released materials, a model was added to evaluate the dispersion coefficients in the wake of obstacles. Using this relatively complete simulation, we analyzed the effects of the above parameters on the dispersion of gaseous pollutants in the atmosphere. UR - https://jesphys.ut.ac.ir/article_13320.html L1 - https://jesphys.ut.ac.ir/article_13320_3f08c5743211be193e5abe2ab2940f95.pdf ER -