|
نوع الوثيقة |
: |
مقال في مجلة دورية |
|
عنوان الوثيقة |
: |
التوزيع الزمانى والمكانى للأوزون واكاسيد النيتروجين المصاحب له فى هواء مدينة جدة يالمملكة العربية السعودية Spatial Distribution and Temporal Variation in Ambient Ozone and Its Associated NOx in the Atmosphere of Jeddah City, Saudi Arabia |
|
الموضوع |
: |
علوم البيئة |
|
لغة الوثيقة |
: |
الانجليزية |
|
المستخلص |
: |
Concentrations of ambient ozone (O3) and nitrogen oxides (NOx) were measured continuously for a period of 12 months
in the city of Jeddah from December 2011 to December 2012. Meteorological parameters, wind speed, temperature, and
relative humidity were also monitored. Concentrations of ground O3 were found to be highly dependent on the NOx diurnal
cycle and wind speed. Nitrogen oxides were found to exceed air quality standards, especially in industrial sites, while O3
concentrations were found to exceed 40 ppb, averaged over 1 h, on more than 24% of the measured days in the rural sites.
Furthermore, they exceeded 30% in all other areas (i.e., the urban ones).
O3 and NOx were inversely related. The highest average NOx concentration (96 ppb) occurred in a rural area downwind
of a desalination plant, while the average O3 concentration peaked in a rural area upwind of a desalination plant, reaching
63.5 ppb, although it also reached 72.6 in another rural area, and we consider this latter result as the background figure in
the present study. The seasonal variations of O3 were more distinct than those of NOx. To the best of our knowledge, this is
the first report providing comprehensive background information on air quality in an arid area of the developing world. |
|
ردمد |
: |
1680-8584 |
|
اسم الدورية |
: |
Aerosol and Air Quality Research, |
|
المجلد |
: |
13 |
|
العدد |
: |
2013 |
|
سنة النشر |
: |
1434 هـ
2013 م |
|
نوع المقالة |
: |
مقالة علمية |
|
تاريخ الاضافة على الموقع |
: |
Monday, December 16, 2013 |
|
الباحثون
| Ibrahim A. Hassan | Hassan, Ibrahim A. | باحث | دكتوراه | iagadallah@kau.edu.sa |
| Jalal M. Basahi | Basahi, Jalal M. | باحث | دكتوراه | |
| Iqbal M. Ismail | Ismail, Iqbal M. | باحث | | |
| Tutki M. Habeebullah | Habeebullah, Tutki M. | باحث | | |
|
الملفات
|
36416.pdf
| pdf | Spatial Distribution and Temporal Variation in Ambient Ozone and Its Associated
NOx in the Atmosphere of Jeddah City, Saudi Arabia |
|