On the northward advance of the ITCZ and the onset of the southwest monsoon rains over the southeast Bay of Bengal ( Kerala).

Abstract

It is found that at the island stations south of 10oN the summer monsoon rains set in on the average towards the end of April which is a month in advance of the onset of the monsoon over the south Kerala coast of peninsular India. At the island stations to the north of 10oN the onset occurs about the first week of May. These dates are ahead of those shown in the existing diagrams giving the average onset dates of the summer monsoon over the SE Bay of Bengal. -from Author