Open AccessAssessment the relationship between air pollutant concentrations and meteorological factors in Baghdad city, Iraq
Author(s) -
Ahmed Alaa Hussein,
Zahraa S. Mahdi
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1076/1/012096
Subject(s) - relative humidity , wind speed , environmental science , pollutant , atmospheric sciences , atmosphere (unit) , air pollutants , humidity , wind direction , meteorology , air pollution , geography , chemistry , organic chemistry , geology
Meteorological parameters directly effect on the amount of pollutants in the atmosphere as well as the period of their stay in it, and to verify this effect, the current study was conducted to find the relationship between pollutants (CO, NO, NO 2 , NOx, PM 10 , SO 2 ) and meteorological parameters (wind speed, rainfall, air temperature, relative humidity, and atmospheric pressure) for Baghdad city from 2017 to 2019. The results showed increase in monthly average of wind speed in 2018 compared to 2017 and the decrease in the monthly average of relative humidity in 2018 compared to 2017, negative relationship between the monthly average of wind speed and the concentrations of pollutants (CO, NO x , SO 2 ) and a positive relationship between this pollutants with relative humidity, positive relationship between PM10 and wind speed and the presence of a negative relationship between PM10 and relative humidity. Most monthly average levels of PM 10 was higher than EPA limits due to the increase in wind speed, as the wind increased PM 10 concentration in the atmosphere due to the lack of Vegetation cover around the Baghdad city also due to the scarcity of water and increase in desertification of agricultural lands and converting them to residential lands randomly and by unpaved roads, which made the wind speed an important and influential factor in increasing the concentration of PM 10 and not a mitigation factor as is known. The Pearson correlation coefficient ranged from weak to medium between pollutants and meteorological parameters except CO with temperature, relative humidity, and atmospheric pressure in 2018 was a strong. The equations of CO and PM 10 with meteorological parameters in 2018 can be adopting.