WIND AND THERMAL STRUCTURES OF THE TROPOSPHERE OVER THE SOUTHWEST ISLANDS OF JAPAN DURING JANUARY 1968 : A PRELIMINARY STUDY FOR AMTEX

Abstract

An analysis is made of wind and thermal structures of the troposphere over the Southwest Islands of Japan for the period of January 1968 using aerological data at upper-air observation stations. The troposphere is likely to be divided into two layers: one below around 800 mb level characterized by low wind steadiness, high humidity and low static stability, and the other the layer above this in which wind is extremely steady and humidity is low. In the lower layer is found temporal variation within a period of 3-5 days which may be associated with intermediate-scale cyclones to be investigated in detail in AMTEX.