TY  - JOUR
T1  - Comparison Between Actual and Estimated Maximum Downwind Distance using Different
Dispersion Parameters
AU - S.M. Essa, Khaled AU - N. Mina, Aziz AU - S. Hamdy, Hany AU - Mubarak, Fawzia AU - A. Khalifa, Ayman 
JO  - Research Journal of Applied Sciences
VL  - 15
IS  - 5
SP  - 180
EP  - 186
PY  - 2020
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2020.180.186
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2020.180.186
KW  - Gaussian model
KW  -maximum downwind distance
KW  -maximum concentration
KW  -dispersion parameters
KW  -
AB  - In this study, the maximum downwind distance
xmax was calculated according to the dispersion parameters
and by using four methods the power law function,
standard, Klug and Pasquill-Gifford method sat three
effective heights of 5, 100 and 250 m, respectively. The
maximum ground level concentration of air pollution that
based on the Gaussian model can be calculated by using
the estimated and actual values of the x<sub>max</sub> for different
stability classes. The estimated and actual x<sub>max</sub> are
summarized as 0-492 m in power law and standard
method, also the percentage of the error between
estimated and actual maximum downwind distance in the
range of 0.005-14.2, respectively. Comparison between
the results of estimated and actual x<sub>max</sub> in case of power
law and standard method with the previous work used
Brigg method (Ronbanchob2015) is carried out.
ER  -