Abstract
The present paper analyzed the large-scale aspects of the atmospheric circulation features during the TOGA-COARE IOP period (November 1, 1992-February 28, 1993). Atmospheric conditions were in many ways similar to those typical of a developing warm episode over the equatorial eastern Pacific, including the frequent occurrence of the low-level westerly wind or westerly wind bursts and the upper-level easterly wind in the western and central Pacific, a moderate eastward shift of the major atmospheric heat source in winter and the Walker circulation, and continuous eastward propagation of 30-60 day low-frequency oscillation into the central and eastern Pacific.
