This is a pre-Winter Monsoon Experiment (Winter MONEX) pilot study to examine the
possible interactions between the northeasterly cold surges off the Asia continent and the
convective disturbances in the near equatorial region. Based on surface and 850 mb wind
and temperature analyses, satellite data, and synoptic weather charts of the Hong Kong
Royal Observatory, a sequence of synoptic events associated with two cold air surges and
near-equatorial disturbances over the Winter MONEX area of South China Sea and its …

In Part I of this pre-winter MONEX study a synoptic analysis on the interaction between cold
air surges off the East Asian continent and the synoptic-scale disturbances, especially their
associated convection, in the equatorial South China Sea during December 1974 was
carried out. In this paper we investigate some kinematic characteristics of the planetary-
scale circulation changes during the same period in the midlatitudes and tropics in relation
to the cold surge and the synoptic-scale disturbances. The main findings suggest a picture of …