Tropical intraseasonal oscillation, super cloud clusters, and cumulus convection schemes

Abstract

TISO is viewed as an oscillation driven by an eastward moving convective region. This convective region consists of one or more super cloud clusters originating in the Indian Ocean and terminating in mid-Pacific, and is then followed by another convective region arising in the Indian Ocean in a period of 40-50 days. Additionally, a formal analogy is pointed out between super cloud clusters and the middle-latitude baroclinic wave packages. This study includes a simulation of TISO in a 2D model to support our interpretation. -from Authors