Abstract
The spectrum analysis of momentum transfer has been made using the observed winds over the four stations at Sapporo, Tateno, Naze and Clark at the four isobaric levels of 850-,500-,300- and 100-mb for the year 1961. It is found that in the middle latitudes the northward momentum transfer is largely accomplished by the eddies with periods of about 3days and about 6 days, whereas in the lower latitudes the transfer due to fluctuations with periods shorter than 4∼5 days is entirely negligible.
