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Estimation of roughness and zero-displacement heights over Baghdad utilizing remote sensing and GIS techniques

Mohsen Al-Zahraa A., Al-Jiboori Monim H., Al-Timimi Yaseen K.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2021

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Vol. 30, No. 1

171--181

EN

The objective of this study was to estimate the height of roughness element (ZH) and zero-displacement length (Zd) for Baghdad city using remote sensing and GIS techniques and resources such as DEM, DSM, and shapefile. The difference between DEM and DSM produced digital height model which represents the height of the roughness element for the region, which was used to determine the zero-displacement height. The results showed that the variations in Zd values depend strongly on ZH. Rusafa had the highest Zd (15.8 m) while Dora had the lowest values (4.7 m). Thus, Baghdad city has medium density classification according to the results of Zd and ZH values.

2

Detecting the relations between meteorological elements and alpha and beta activity concentration at Al-Tuwaitha site, Baghdad

Naif Salwa S., Al-Rbayee Thoalfaqar, Al-Jiboori Monim H.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2021

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Vol. 30, No. 3

388--399

EN

In this study, 50 samples of air particulates collected from different places in- and outside the Al-Tuwaitha nuclear site, south of Baghdad were used to measure daily gross alpha and beta activity concentrations (AAC and BAC) for the period from 28 January 2015 to 13 April 2017. At the same time, several meteorological factors such as air temperature, wind speed, wind direction, air pressure, relative humidity, and solar radiation, were also measured. Air stability classes were also derived from wind speed and solar radiation. AAC/BAC variations in the surface air layer were discussed in relation to these factors. The results show that there are inverse relations between AAC/BAC and wind speed and temperature, linear relations between AAC/ABC and air pressure and weak relations between AAC/BAC and relative humidity and solar radiation. Lastly, AAC/BAC measurements in unstable air are as large as in neutral air.

3

Heat waves and health impact on human in Baghdad

Hassan Zahraa M., Al-Jiboori Monim H., Al-Abassi Hazima M.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2020

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Vol. 29, No. 2

212--222

EN

This investigation aim to evaluate the effect of heat wave on health of human, so to achieve this 40 blood samples for person exposed to heat wave were drawn most patients were attend to specialists in hospital laboratories (Medical City, Ibn al-Baladi, Sheikh Zayed, Kadhimiya Educational). The patients aged 10–60 years, male (20) and female (20). CBC analyzes was performed. The result of the presents study recorded a highly signifi cant difference in total (mean and percent) as compared with the normal value of the CBC analyze the result for total (mean and percent) for male the factors CRP, ESR, WBC, PCV, PL (15.5, 43, 11.35, 28.5, 215) respectively (100%, 100%, 100%, 100%, 100%) and the result for total (mean and percent) for female the factors CRP, ESR, WBC, PCV, PL (15, 43.5, 11.35, 31, 220.5) respectively (100%, 100%, 100%, 100%, 100%). According to the result we can conclude that there was a highly significant deferent in mean value for patient compared with the normal value which is the mean cause of hard attack which lead to death. The study is the first of its kind in the Department of Atmospheric Sciences in Iraq.

4

Study of surface heat inversions characteristics around Baghdad station

Al-Ghrybawi Shahad R., Al-Jiboori Monim H.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2019

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Vol. 28, No. 4

610--618

EN

This work presents the surface heat inversions characteristics for Baghdad city. This inversion plays an important role in the study of concentrations of pollutants as well as its effect on spraying insecticides, which starts from a height of 2 m using the daily radiosonde data (midnight) of the period of 2013–2014 obtained from the Iraqi Meteorological Organization and Seismology. The frequencies average of the heat inversion was studied on a monthly and quarterly basis. It was clear from the study that surface heat inversion shows the highest monthly frequency average in the September; the lowest monthly frequency average in the March; highest seasonal frequency average in the summer and the lowest seasonal frequency average in the spring. As for the relative frequencies of the monthly and seasonal of the surface heat inversion was calculated, it was found that 49% occurs during the summer months also winter record the same relative frequencies of the surface heat inversion in the summer. It was done through this research calculated height of the surface heat inversion the results were heights inversion in winter.

5

Characteristics of C2µ derived from ultrasonic anemometer in an urban boundary layer

Al-Jiboori Monim H., Jaber Sundus H.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2019

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Vol. 28, No. 1

14--24

EN

Fast-response observations of three components of wind and air temperature have been applied to calculate the refractive index function coefficient (C2µ ), which is needed to describe optical wave propagation in a turbulent medium. These were measured by 3D ultrasonic anemometer installed on the roof of the building of Atmospheric Science Department which is 19 m above ground level. Refractive index function coefficient was calculated for various periods of three seasons: winter, spring and summer.Diurnal variations of (C2µ) have been made at the surface layer for these seasons. The results show that high values ofmean (C2µ) occurred during the day time more than at night, also they occurred more in summer than in winter and spring. The results of (Cµ2) found to change with atmospheric stability, whereas they inversely decrease under unstable conditions, approximately constant at neutral cases, and increase under stable conditions. Values of (C2µ) on average appears to be lower during the rainy and foggy weather cases compared to those of clear sky.