الجزيرة الحرارية الحضرية لمدينة جدة في فترة الربيع لعام 1433 ه (2012 م)‎

Abstract EN

between city stations temperature (Ajaweed and Kitjg Abdulaziz University KAU u) and external station as (King Abdul Aziz Airport KAA r).

Some cases of the month of April 2012 between 17 until 28 were presented.

The urban heat island ^ appeared for both regions; Ajaweed and King Abdulaziz University and the airport between 0000 and 0800 hours where often the wind was NE at the airport area and ends at the point of convergence in the area of Ajaweed with the confluence of south or SW winds at Ajaweed area.

This was consistent with previous findings, that urban heat island constitute the confluence of strong winds (convergence).

On April 26 was the day with the large difference between the KAA and Ajaweed with difference of 5,3°C - 6°C, while the difference between the KAA and the KAU of 4°C - 5.7°C between 0000 and 0600 hours.

On April 27 was also the day a large difference and strong thermal Island where a difference of 5°C - 7°C between KAA and Ajaweed, while the difference of 4°C - 6°C between the KAA and the KAU and between 0000 and 0600 hours.

For urban humidity island, the intensity of the island between the KAA and the Ajaweed was worth approximately 55% for the period between 0000 and 0900 hours, on April 26.

On April 27, the intensity of the island urban humidity was strong between the hours of 0000 and until 0600 hours between the KAA and the Ajaweed area with the average value of 50% and a/?//between