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The article presents a study on the impacts of the Indian Ocean basin-scale sea surface temperature anomaly (SSTA) on the onset of the summer monsoon on South China Sea. It is observed that basin-wide warming in tropical Indian Ocean occurs after an El Niño event. Changes in the sea-surface temperature sustain the El Niño-Southern Oscillation (ENSO) effects towards the summer monsoon in Asia and modifies the strength of the Philippine Sea anti-cyclone, which causes delay to the South China Sea monsoon onset. The methods and the conclusion of the study are discussed.

The article presents a study on El Niño Southern Oscillation (ENSO) and the onset date of South China Sea summer monsoon (SCSSM). It mentions that the monsoon onset date (MOD) is determined by the change in direction of the zonal winds in the South China Sea from going towards the east to west in two consecutive pentads. It discusses that the ENSO is affected by the ocean heat content (OHC). The study found that the monsoon starts late in a period of warm ENSO. It also mentions that winds in the east of the Philippines affect the onset of the MOD. The study also relates the effects of cold subsurface water in the western North Pacific with SCSSM.