The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The asymmetry of the longitudinal distribution of solar activity In the period between 1943 and 1984 is investigated. Evaluations of asymmetry were obtained by the method of polar diagrams both for the whole disc of the Sun and separately for the northern and southern hemispheres. The changes in the longitudinal asymmetry are compared with the first harmonic of the 27-day variation in the intensity of galactic cosmic rays and the direction of atmospheric circulation. It is shown that in the years of high solar activity dominance of one of the hemispheres gives way to dominance of the opposite one. Correspondence exists between dominance of the longitudinal asymmetry of this or that hemisphere and the direction of the zonal wind at the equator in the stratosphere. A link is found between the direction of zonal wind and the amplitude of the 27-day wave in galactic cosmic rays.