In northern Sulawesi, the high amounts of rainfall are highly negatively correlated with an MEI of
approximately 0.4, NINO3.4, and NINO4. However, the rainfall is highly positively correlated with
NINO.WEST, indicating that the rainfall is primarily influenced by the nearest region during La Niña
episodes. In contrast, the rainfall patterns for southern Sulawesi exhibit distinctive wet and dry
seasonal variations similar to those of Java Island. The stations in the eastern and western parts of
Kalimantan Island exhibit different patterns, with generally larger amounts of rainfall in the east that
are positively correlated with the DMI and IBOW and smaller amounts of rainfall in the west that are
negatively correlated with the MEI, NINO4, and NINO3.4. The rainfall in the southern Maluku region
shows clear seasonal variations. In the Papua Region, the station that faces the Pacific Ocean has high
positive correlations with the MEI and NINO indices, with values of 0.25 and 0.25–0.57, respectively,
and the station on the other side (i.e., facing the Banda Sea) has high negative correlations with the
MEI and NINO indices, with values of –0.37 and –0.3 to –0.37, respectively.