Abstract
Relation between solar activity and variations of the general circulation is investigated by using data during winter of 1946-1956. K-and Ci-index, which are measures of geomagnetic activity, are used to represent solar activity. As indices to represent a hemispheric flow pattern, kinetic energy of 5-day mean north-south wind component and amplitudes of each harmonic wave along 50° latitude circle are used. Summarizing the results, ten days or so after an intense sporadic outburst of corpuscular emission from the sun, a circulation pattern seems to change into a low index type and heat exchange along the meridian is intensified. A typical example of intense corpuscular emission and the subsequent change of the circulation pattern was observed in the middle of February 1958, when a recordbreaking intensity of aurora was observed in many countries including abnormally low latitudes.
