Document Details

Document Type : Article In Journal 
Document Title :
A Study of Total Ozone Variation over Some Cities in Kingdom of Saudi Arabia during 2004
دراسة تغير الأوزون الكلي فوق بعض مدن المملكة العربية السعودية خلال عام 2004 م
 
Document Language : Arabic 
Abstract : Abstract. The study was done using total ozone data for major cities of Saudi Arabia to examine spatial and temporal variability using statistical and graphical analysis. The main purpose of this study was to gain some understanding of total ozone variability in different time scales (daily, monthly, and seasonally) and to compare different cities with each other to study the spatial variability. The data presented from the Total Mapping Ozone Spectrometer (TOMS) for the year 2004 were used to study total ozone column amounts for a number of different locations including Tabouk, Dhahran, Riyadh, Madinah, Jeddah, Abha in the range of latitudes between 18°N- 28°N. It was found that ozone has temporal and spatial variations. The daily total ozone varied between a maximum value of 344 Dobson (DU) in Tabouk to a minimum value of 209 DU in Abha. The maximum daily average value equaled 269 DU over Tabouk and the minimum daily average value equaled 257 over Abha. The daily range of Tabouk was 134 DU which was approximately 50% of the mean value, whereas the daily range for other cities was between 32% and 34% of the mean value, and the standard deviation for all cities was between 18 and 21 DU. There was a clear seasonal variation with a maximum in spring and summer; and a minimum in fall and winter; whereas the variability was greatest in winter and least in summer for all locations. On a monthly basis, ozone values varied between 287 DU in April over Tabouk and 224 DU in January over Abha. Seasonal values reached maximum in spring and summer with 277 and 282 DU in Tabouk and Dhahran respectively; and minimum values in fall and winter with 259 and 227 DU in Riyadh and Abha respectively. The correlation coefficient was computed among cities for total ozone values. Results showed that correlation coefficient values were high among the stations that are close to each other by latitude circles and have similar climatic conditions. 
ISSN : 1319-1039 
Journal Name : Meteorology, Environment and Arid Land Agriculture Sciences Journal 
Volume : 17 
Issue Number : 2 
Publishing Year : 1427 AH
2006 AD 
Article Type : Article 
Added Date : Friday, June 1, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عبدالرحمن خلف الخلفAl-Khalaf, A KInvestigatorDoctorateakhalaf@kau.edu.sa

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