Urban heat island of Jeddah

الملخص EN

The study includes meteorological measurements in the urban and rural areas of Jcddah .

The characteristics of the city heat island and its diurnal var iation is investigated, The maximum intensity was (2 .8'C) at dawn and the minimum was (0.4"C) in early afternoon .

The profile measurements ove r the city is used to define the dimension of the heat island.

The early morning profiles show that the maximum height of this island was 100 m.

This study could he useful for urban development and cit}' design decisions ,