THE SOUTH-AFRICAN FOG-WATER COLLECTION EXPERIMENT - METEOROLOGICAL FEATURES ASSOCIATED WITH WATER COLLECTION ALONG THE EASTERN ESCARPMENT OF SOUTH-AFRICA

Recent experiments conducted in South America have indicated; that fog is a potential source of domestic water in areas where advective clou ds frequently move over the coastal mountain ranges. Advective and oro graphic clouds develop along the eastern escarpment of South Africa's Northern Province when onshore pressure gradients develop to the east Of;he country, Four synoptic patterns associated with high-elevation f og are identified. These usually give rise to winds with a south-easte rly or north-easterly onshore component. The geographic position of se a-surface atmospheric pressure gradients associated with these pattern s accompanying fog events is identified using discriminant analysis. S ea-surface atmospheric pressure gradients in the identified on fog occ urrence is also investigated.