POTENSI DAMPAK ANOMALI IKLIM DI WILAYAH INDO-PASIFIK TERHADAP CURAH HUJAN EKSTREM DI KEPULAUAN NUSA TENGGARA

ANGGRAINI, PUTRI and Iskandar, Iskhaq and Suhadi, Suhadi (2024) POTENSI DAMPAK ANOMALI IKLIM DI WILAYAH INDO-PASIFIK TERHADAP CURAH HUJAN EKSTREM DI KEPULAUAN NUSA TENGGARA. Masters thesis, Sriwijaya University.

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Abstract

Indonesia is the largest archipelagic country in the world, located between the Pacific Ocean and the Indian Ocean, this makes Indonesia vulnerable to climate change. One of the consequences of climate change is extreme rainfall. Precipitation is influenced by interannual modes of climate variability, such as El Niño–Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD). Researchers analyzed potential climate anomalies in the Indo-Pacific region regarding rainfall in the Nusa Tenggara Islands and their relationship with ENSO and IOD phenomena for the time period 1992 - 2022. The data in this study is daily rainfall data at 6 BMKG stations in the Nusa Tenggara Islands region. Extreme rainfall calculations are carried out based on the rules from ETCCDI, namely CDD, CWD, PRCPTOT, and Rnmm. Trend analysis was carried out using the Mankendall non-parametric statistical test and the Sens test to determine the influence of global climate anomalies ENSO and IOD on the Nusa Tenggara Islands. The trend increase occurred significantly in the CWD, PRCPTOT, and R15 mm indices. Meanwhile, a decreasing trend occurred in the CDD index. Climate anomalies in the years of ENSO and IOD events have an impact on rainfall on the indices (CDD, CWD, PRCPTOT, and R15 mm). El Niño and positive IOD of the JJA and SON seasons caused the longest CDD (dry days) in 1994 in the Nusa Tenggara Islands. Apart from that, La Niña also causes this area to get wetter. This is shown by the longest and highest CWD and PRCPTOT occurring in 2021. Negative IOD in 2016 also caused the longest Rnmm (extreme wet day with std R15 mm) in the Nusa Tenggara region. Keywords: Climate Change, El Niño–Southern Oscillation, Indian Ocean Dipole, and Rainfall.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Perubahan Iklim, El Niño–Southern Oscillation, Indian Ocean Dipole, dan Curah Hujan
Subjects:	Q Science > QC Physics > QC1-75 General Q Science > QC Physics > QC851-999 Meteorology. Climatology. Including the earth's atmosphere Q Science > QC Physics > QC980-999 Climatology and weather
Divisions:	08-Faculty of Mathematics and Natural Science > 45102-Physics (S2)
Depositing User:	Putri Anggraini
Date Deposited:	23 Jul 2024 02:07
Last Modified:	23 Jul 2024 02:07
URI:	http://repository.unsri.ac.id/id/eprint/152800

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