Several HASs of clouds and blue sky taken from a plane. Various shots from different angles of Senegaleses working for the World Weather Watch at a weather station in a field near Dakar airport, preparing an instrument package, taking a weather balloon out of hangar, attaching instrument package to it and releasing them in the air. MS of a meteo tower in airport field with native walking out of it, of him taking the reading of instruments in a shelter, taking reading from instruments in water on the ground and from a small tank. Various shots of same man inside weather tower taking the reading of different instruments and teletyping information. HAMCSs of bow of Canadian weather ship Quadra with water splashing and part of anchor in evidence in two shots. MS of part of one deck with equipment in evidence. MSs at night of a small boat sailing from a weather ship to another, ships are taking part in the international Global Atmospheric Research Program called operation G.A.T.E. including various shots of Quadra decks and of technicians looking at other ships.