Space and time variability analyses of the Indian monsoon rainfall as inferred from satellite-derived OLR data

Abstract

Derived dates of the monsoon onset and withdrawal using OLR indices are in fair agreement with the dates of onset and withdrawal obtained based on the rainfall records. In general, the Indian sub-continent has a high positive OLR anomaly during the winter and pre-monsoon months and a moderate negative anomaly in the monsoon season. The distribution of OLR anomalies exhibits strong dependence on both temporal and spatial scales during the years with poor or excess monsoon rainfall. -from Authors