PENGARUH EL NIÑO SOUTHERN OSCILLATION (ENSO) DAN INDIAN OCEAN DIPOLE (IOD) TERHADAP CURAH HUJAN DI INDONESIA BERDASARKAN DATA TRMM 3B43

PRASTIWI, DEVITA ANINDYA and Wijaya, Mardiansyah and Irfan, Muhammad (2020) PENGARUH EL NIÑO SOUTHERN OSCILLATION (ENSO) DAN INDIAN OCEAN DIPOLE (IOD) TERHADAP CURAH HUJAN DI INDONESIA BERDASARKAN DATA TRMM 3B43. Undergraduate thesis, Sriwijaya University.

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Abstract

Curah hujan Indonesia umumnya dipengaruhi oleh angin, letak geografis, topografi, maupun akibat aktivitas manusia, serta berbagai fenomena alam lainnya yang diantaranya merupakan fenomena di Samudera Pasifik (ENSO) El Niño Southern Oscillation dan fenomena alam di Samudera Hindia (IOD) Indian Ocean Dipole. Penelitian ini bertujuan menganalisis hubungan antara curah hujan terhadap kedua fenomena tersebut berdasarakan analisis korelasi. Data yang digunakan merupakan data dari (TRMM) Tropical Rainfall Measuring Mission 3B43 (giovanni.gsfc.nasa.gov), data indeks ENSO (apdrc.soest.hawaii.edu) dan data indeks IOD (jamstec.go.jp). Data diolah dengan menggunakan software Grid analysis and Display System (GrADS) dan analisis hasil dengan metode korelasi. Hasil menunjukkan adanya pengaruh fenomena ENSO dan IOD terhadap curah hujan dengan nilai korelasi yang diperoleh negatif baik untuk ENSO dan IOD. ENSO lebih berpengaruh pada wilayah bagian timur Indonesia (Laut Sulawesi, Pulau Halmahera, Pulau Papua bagian utara) dengan korelasi paling tinggi sebesar -0.5 yang menunjukkan bahwa kedua variabel (ENSO dan curah hujan) berbanding terbalik dimana ketika fenomena ENSO terjadi maka curah hujan dengan korelasi tersebut akan mengalami defisit khususnya daerah timur Indonesia yang lebih dekat dengan Samudera Pasifik (wilayah ENSO). Sedangkan IOD lebih berpengaruh pada wilayah bagian barat Indonesia (Pulau Sumatera bagian Selatan, Pulau Jawa, dan Selat Sunda) yang berdekatan dengan Samudera Hindia dengan korelasi paling tinggi -0.5 dimana ketika fenomena IOD terjadi maka curah hujan dengan nilai korelasi tersebut akan mengalami defisit khususnya pada wilayah bagian barat Indonesia yang lebih dekat dengan Samudera Hindia (wilayah IOD). Generally, rainfall in Indonesian effect by wind, geographic, topographic, as well as consequence of human activity, and other natural phenomenon instance phenomenon in Pasific Ocean (ENSO) El Niño Southern Oscillation and natural phenomenon in Hindia Ocean (IOD) Indian Ocean Dipole. This research analyzes rainfall in Indonesia and its relation both two of phenomenon base on the correlation analysis. The data used is data from (TRMM) Tropical Rainfall Measuring Mission 3B43 (Giovanni.gsfc.nasa.gov), ENSO data index (apdrc.soest.hawaii.edu), IOD data index (jamstec.go.jp). Data is processed using Grid analysis and Display System (GrADS) software and correlation method analysis. The result obtained that impact of ENSO and IOD on rainfall in Indonesian with correlation value is negative for ENSO and IOD. ENSO more impact at Eastern Indonesian (Sulawesi Sea, Halmahera Island, Northern Papua) with value of correlation is -0.5 which show that both of two variable (ENSO and rainfall) inversely propotional when ENSO go on then rainfall with its correlation will have a deficit especially Eastern Indonesian which more than closer to Pasific Ocean (ENSO region). IOD more impact at Western Indonesian (Southern Sumatera, Java Island, Sunda Strain) with value of correlation is -0.5 which show that both of two variable (IOD and rainfall) inversely propotional when IOD go on then rainfall with its correlation will have a deficit especially Western Indonesian which more than closer to Hindia Ocean (IOD region).

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	curah hujan, enso, iod, korelasi
Subjects:	Q Science > QC Physics > QC851-999 Meteorology. Climatology. Including the earth's atmosphere
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	Users 5379 not found.
Date Deposited:	25 Mar 2021 02:26
Last Modified:	25 Mar 2021 02:26
URI:	http://repository.unsri.ac.id/id/eprint/27866

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