Studi Analisis El Nino Dan La Nina Terhadap Curah Hujan Mengunakan Fast  Fourier Transform (FFT) Dan Lomb Periodogram (Studi Kasus : Provinsi Jawa Tengah

Awal Rifan Fathony; Ahmad Zakaria; Ahmad Zakaria; Riki Chandra Wijaya; Dyah Indriana Kusumaastuti

doi:10.23960/jrsdd.v11i2.3174

Awal Rifan Fathony
Universitas Lampung
Ahmad Zakaria
Ahmad Zakaria
Universitas Lampung
Riki Chandra Wijaya
Universitas Lampung
Dyah Indriana Kusumaastuti
Universitas Lampung

DOI: https://doi.org/10.23960/jrsdd.v11i2.3174

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Abstract

Central Java Province is a potential area that has an important role in national food production. El Nino and La Nina events have a very large impact if they occur in Indonesia, especially in Central Java Province. This study aims to analyze the impact of El Nino and La Nina events specifically in Central Java Province where the areas more dominantly affected by El Nino and La Nina. The research location uses 3 rainfall stations, namely the Tunggal Wulung Meteorological Station, Tegal Maritime Meteorological Station, and Tanjung Emas Maritime Meteorological Station. The method used is the Fast Fourier Transform (FFT) method and the long periodogram. The results showed that the periods of El Nino and La Nina phenomena recurring using the FFT method are forecasts for the periods 2.2428, 2.8036, and 3.7381 years. While using the lom periodogram method, namely in the periods of 2,480, 2,621, and 3:16 years. The results of the analysis of the FFT method obtained results that varied in the height of rainfall at the 3 stations, while the results of the analysis using the periodogram log showed that the Tunggal Wulung rain station had the highest peak rainfall. This study concludes that there are variations in the peak incidence using either the slow periodogram or the FFT method. However, both of these methods and based on the BMKG and TRMM, the Tunggal Wulung Meteorological Station has the highest peak between Tegal Station and Tanjung Emas Station.

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References

Apa itu Oceanic Nino Index (ONI). (n.d.). Retrieved July 28, 2022, from https://www.climate4life.info

Fadilah, I. (2022, April 22). Perbedaan El Nino dan La Nina. https://www.zenius.net

Gani, M. R. (2020). Pengaruh El Nino dan La nina terhadap data-data hujan kabupaten Lampung Timur Provnisi Lampung. Universitas Lampung.

Hartantio, F., Kusumastuti, D. I., & Zakaria, A. (2021). Perngaruh El Nino dan La Nina Terhadap Data- Data Hujan Kabupaten Lampung Barat. 9(3), 513–522.

Irawan, bambang. (2006). Fenomena Anomali Iklim El Nino dan La Nina: Kecenderungan Jangka Panjang dan Pengaruhnya Terhadap Produksi Pangan (Vol. 24, Issue 1).

Prawaka, F., Zakaria, A., & Tugiono, S. (2013). Analisis Data Curah Hujan yang Hilang Dengan Menggunakan Metode Normal Ratio , Inversed Square Distance , dan Rata-Rata Aljabar ( Studi Kasus Curah Hujan Beberapa Stasiun Hujan Daerah Bandar Lampung ). Jurnal Rekayasa Sipil Dan Desain, 4(3), 43–50.

Ismail, M. R., Zakaria, A., Susilo, G.E. (2020). Analisis pengaruh anomali iklim terhadap curah hujan di Propinsi Bengkulu. 24(1), 10–14. https://doi.org/ 10.23960/rekrjits.v24i1.11

Rosmawati. (2014). Dampak El-Nino Terhadap Fluktuasi Curah Hujan di Bandar Lampung (Vol. 1). Universitas Lampung.

Syaifullah, M. D. (2014). Validasi Data TRMM terhadap Data Curah Hujan Aktual Di Tiga DAS di Indonesia. Jurnal Meteorologi Dan Geofisika, 15, 109–118.

Triatmodjo, B. (2008). Hidrologi Terapan (Beta Offse).

Winarno, G. D., & Soejoko, S. R. I. A. (2010). Hidrologi Hutan. Universitas Lampung.

Zakaria, A., Sumiharni, Susilo, G. E., & Arifaini, N. (2018). Studi Pengaruh El Nino dan La Nina Terhadap Data Curah Hujan Dari Wilayah Lampung Timur. Prosiding Semnas SINTA FT UNILA, 1, 241–245.