Nocturnal mountain winds in Cyprus - an observational study

Abstract

This study examines the nocturnal wind systems of radiation nights on the Mediterranean island of Cyprus using the network of weather stations in and around the Troodos Mountains, which rise to more than 1900 m. These observations are supplemented by a series from the southern slopes of the mountains. Results indicate the typical development, depth and effects of these winds along the south coast of the island. The generation of these winds, their character and the forecasting challenges they present are also discussed, with an emphasis on the southward flow observed at the Royal Air Force (RAF) Akrotiri. The offshore winds are a combination of katabatic drainage, largely formed within incised valleys, with a land breeze. They bring cool dry air to the coast. The drainage winds commence above ∼1200 m and deepen to a depth of ∼75 m in the Kouris valley, becoming shallower as they move away from the valley mouth. The valley winds ‘fan out’ as they approach sea level to reach 20 km or more from the coast.