From twenty years of January and February North American trajectories of migratory anticyclones four typical groups were found. Examples of these types were studied with respect to the temporal variations of the pressure and temperature at standard levels in a vertical column of the atmosphere over the centers of the migratory anticyclones. Certain characteristic features of these variations are summarized.

This content is only available as a PDF.


* Present address: 7303 Hansford St., S.E., Washington 28, D. C.