Sea breezes over north-west Arabia

Abstract

Using surface and upper wind observations on three days at each of three sites in north-western Saudi Arabia it was found that the sea breeze could extend at least 225 km inland at an average speed of 6.7 m sec-l between 1445 and 2300. At 25 km inland both the on-shore component and the off-shore return flow above it were about 1.2 km deep. At this site two increases in dew point, separated by about two hours, fol-lowed the arrival of the sea breeze and may have represented the arrival of air with a mostly land track followed by air with a mostly sea track. An unexplained fall in dew point immediately preceded the arrival of the sea breeze on six out of 11 days.