On the intensification of Hurricane Celia (1970)

Low and high cloud motions derived from ATS — I I I satellite pictures, wind data from surface ships, vertical temperature profiles through the upper layer of the ocean, and sea-surface temperatures were used to examine intensity variations of Hurricane Celia. Fields of radial and tangential wind components, absolute angular momentum flux, and absolute vorticity were computed from analyzed streamlines and isotachs. Radial and tangential velocities and absolute angular momentum flux were averaged around circles of several radii from the storm center. Average values of relative vorticity and divergence within these circular areas were also computed.