The relation between the basic currents of the low latitudes and the initiation of typhoons is investigated statistic-ally and synoptically by means of recent aerological data.It is shown that about 80%of typhoons dev...The relation between the basic currents of the low latitudes and the initiation of typhoons is investigated statistic-ally and synoptically by means of recent aerological data.It is shown that about 80%of typhoons developed in the eastern part of the equatorial convergence zone between the equatorial westerlies and trade wind of West Pacific Ocean.The equatorial westerly is a large scale and quasi-steady phenomenon;therefore,it is probably reasonable to be called"basic current"and typhoons are considered as vortices of smaller scale.There is a quite definite relation-ship between the time,position,frequency of the initiation of typhoons and the position,strength of the basic cur-rents in the low latitudes.There is a quasi-periodical variation of the strength and position of the basic currents with a period longer than one month.This fact may be helpful for the extended forecast the initiation and development of ty-phoons.展开更多
文摘The relation between the basic currents of the low latitudes and the initiation of typhoons is investigated statistic-ally and synoptically by means of recent aerological data.It is shown that about 80%of typhoons developed in the eastern part of the equatorial convergence zone between the equatorial westerlies and trade wind of West Pacific Ocean.The equatorial westerly is a large scale and quasi-steady phenomenon;therefore,it is probably reasonable to be called"basic current"and typhoons are considered as vortices of smaller scale.There is a quite definite relation-ship between the time,position,frequency of the initiation of typhoons and the position,strength of the basic cur-rents in the low latitudes.There is a quasi-periodical variation of the strength and position of the basic currents with a period longer than one month.This fact may be helpful for the extended forecast the initiation and development of ty-phoons.
