تكرار و اتجاه تغير سرعة الرياح اليومية القصوى بالساحلين الشرقي و الغربي بالمملكة العربية السعودية

الملخص EN

The study examines analyzing the general direction of maximum daily wind speed using daily data for the period from 1978 to 2017 in the Dammam, Yanbu and Wajh stations and for the period from 1978 to 2015 in the Jeddah station.

Analysis of the general trend of the maximum daily wind speed was based on a number of statistical methods.

This study also used the half-averages method to analyze the general direction of the maximum daily wind speed, and the results of this study are that the northern winds top the gusts of wind in Dammam station and the northwest winds in the Al Wajh station and the western winds in Yanbu station, and the northern winds in Jeddah station The study showed that the daily winds whose maximum speed does not exceed 10 m / s is the most occurring in the study area with a frequency of 10272 days in Dammam station, 10062 days in Al-Wajh station, 9718 days in Yanbu station and 13998 days in Jeddah station.

It was clear from the results of comparing the maximum daily wind speed between stations that there is a difference between the rates of wind speed in the study area except for Jeddah station and that the maximum daily wind speed is decreasing in all stations except for Yanbu station.

All directions have simple regression values ranging from 0.087 in Al Wajh Station to 0.041 in Yanbu Station