South pacific convergence zone
From AMS Glossary
South Pacific convergence zone
(Abbreviated SPCZ.) A persistent and greatly elongated zone of low-level convergence extending from approximately 140°E near the equator to approximately 120°W at 30°S.
The zone is not quite linear, but is oriented more west to east near the equator and has a more diagonal orientation (northwest to southeast) at higher latitudes. The low-level convergence of moisture leads to a persistent cloud band along the SPCZ.
Trenberth, K. E. 1991. Teleconnections Linking Worldwide Climate Anomalies. H. Glantz, R. Katz, and N. Nichols, Eds., . 22–23.