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标题：Effect of global climate (ENSO) on regional climate (rainfall and air temperature) in the Morotai Island region
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作者：Darmiyati Muksin ; Domu Simbolon ; Eko Sri Wiyono 等
期刊名称：Advances in Environmental Sciences - International Journal of the Bioflux Society
印刷版ISSN：2066-7620
电子版ISSN：2065-7647
出版年度：2020
卷号：12
期号：2
页码：97-109
语种：English
出版社：Bioflux
摘要：ENSO (El Nino Southern Oscillation) is a global climate anomaly that plays an important role in annual climate and usually causes a shift in climate parameters. ENSO has many impacts on the climate and the sea in Indonesia, especially in eastern Indonesia. Besides rainfall, ENSO can also affect extreme weather, longer dry and rainy seasons and drought in various regions in Indonesia including Morotai Island. Empirically the value of SOI and Nino 3.4 is an indicator of the ENSO phenomenon. This study aims to analyze the effect of ENSO on climate parameters (rainfall and air temperature) that occur on Morotai Island. The results showed that in 3 decades on 1987-2017 there were 18 times of ENSO (SOI indicator) and 13 times of ENSO (Nino 3.4 indicator), with the category of weak-moderate to strong. The regional climate of Morotai Island is included in the monsoonal pattern in region A and the local pattern in region C. Morotai Island rainfall is categorized as normal which is seen from the average annual rainfall of 119 mm month-1 . The highest rainfall in June was 159.2 mm and the lowest in SeptemberOctober was 93.79 mm. The results of the regression-correlation analysis showed no significance and a weak correlation between ENSO and the two climate parameters (rainfall and air temperature) on the SOI indicator. This can be seen in the SOI p-value ranging from 0.017 to 0.026 < 0.05 and r values ranging from 0.231 to 0.30. Whereas the p value of the Nino 3.4 indicator shows that there is a significant correlation between Nino 3.4 with rainfall and air temperature, with a p value of 0.019 < 0.05 and an r value of Nino 3.4 of 0.401 and 0.540.
关键词：El Nino;La Nina;SOI;Nino 3.4;climate;Morotai