Abstract
The vertical structure of traveling planetary-scale waves is investigated using spherical harmonics of the geopotential field at levels from 1000 mb. to 10 mb., obtained from ESSA analyses. Fluctuations of the large-scale harmonics are analyzed using vector regression methods.
Westward-moving planetary-scale waves are shown to be present throughout the year at all the levels analyzed, with upward increasing amplitude in winter.
Now with Weather Bureau, Environmental Science Services Administration, Silver Spring, Maryland.
