The lunar atmospheric tide at Accra, Gold Coast, Africa

✍ Scribed by Prof. S. Chapman

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 142 KB
• Volume: 64
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49706427617

✦ Synopsis

Abstract

The lunar atmospheric tide has hitherto been determined at two stations on the African continent, Helwan and Kimberley. A new determination has now been made from about three years' bi‐hourly data for the tropical African station, Accra (5° 33′ N., 0° 12′ W.). The annual mean amplitude of the lunar tidal variation of pressure is found to have the rather small value 45 microbars; the phase angle, 72°, implies that the high (lunar) tide in the atmosphere over Accra occurs about half an hour after the moon's transit; this phase lag is quite normal.