The El Nio Southern Oscillation (ENSO) Effect on Upwelling in the North Maluku Sea

Abstract

The north Maluku Sea has a high wind speed in the southeast season caused an increase in the Ekman transport at the coastal area so affects in rising of chlorophyll-a and the Sea Surface Temperature (SST) is cooling, who indicates the upwelling phenomenon. Upwelling in the North Maluku Sea is a type of coastal Upwelling where it occurs on the coast with a depth of more than 1500 m. The intensity of Upwelling is influenced by climate variability, one of which is El Nio Southern Oscillation (ENSO). By using remote sensing is chlorophyll-a data, SST, wind obtained from satellite imagery, and the value Ekman Mass Transport (EMT) with method composite formula. This research aims to know the influence of climate variability ENSO against the phenomenon of upwelling that occurred in the North Maluku Sea in the southeast season. Effect of climate variability ENSO at the time of El Nio (La Nia), chlorophyll-a concentration has positive (negative) anomalies, negative (positive) SST anomaly and wind conditions thus causing EMT energy to increase (decrease).