ANALYZING THE EFFECT OF INDIAN OCEAN DIPOLE PHENOMENON TO THE ANOMALIES DISTRIBUTION OF SEA SURFACE TEMPERATURE IN WEST SUMATERA
Abstract
The waters of West Sumatera that face directly into Indian Ocean is strongly influenced by Indian Ocean Dipole (IOD) phenomenon which caused an anomaly of sea surface temperature (SST) and affect rainfall intensity in the West Sumatera Province. This research was aimed to know the effect of IOD on the distribution and anomaly of SST and rainfall intensity in West Sumatera. Data processing methods in this research is using statistical and descriptive. The data used in this research are NOAA OI-SST, Dipole Mode Index (DMI), and rainfall data from BKMG. The results showed that IOD positive occured in October 2018 and the IOD negative occured in July 2016. During the positive IOD, SST distribution values were 28 ˚C – 28,8 ˚C and SST anomaly values were -1,2 to -0,4, in the negative phase the distribution of SST values were 29,8 ˚C – 30,35 ˚C and the SST anomaly values were 0,15 to 0,7. The rainfall intensity during positive IOD phase is 157 mm/month and during negative IOD phase is 525 mm/month.
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References
2. Eschenbach, W. 2013. Monthly Averages, Anomalies, and Uncertainties. [Online]. Diakses pada : 23 Desember 2019, pukul 19.15 WIB. Tersedia : https://wattsupwiththat.com/2013/08/17/monthly-averages-anomalies-and-uncertainties/.
3. Gusmira, E. 2005. Pengaruh Dipole Mode Terhadap Angin Zonal dan Curah Hujan di Sumatera Barat. [Thesis]. Fakultas Teknik dan Ilmu Kebumian. Institut Teknologi Bandung. Bandung.
4. Hermawan, E. 2010. Pengelompokkan Pola Curah Hujan Yang Terjadi di Beberapa Kawasan P. Sumatera Berbasis Hasil Analisis Teknik Spektral. Jurnal Meteorologi dan Geofisika. 11 (2). 75-85.
5. Iizuka, S.,T. Matsuura and T. Yamagata. 2000. The Indian Ocean SST Dipole Simulated In a Coupled General Circulation Model. Geophysical Research Lett. 27: 3369-3372.
6. Iskandar, M.R. 2014. Mengenal Indian Ocean Dipole (IOD) dan Dampaknya pada Perubahan Iklim. 39 (2). 13-21.
7. Kailaku, T.E. 2009. Pengaruh ENSO (El Nino-Southern Oscillation) dan IOD (Indian Ocean Dipole) terhadap Dinamika Waktu Tanam Padi di Wilayah Tipe Hujan Equatorial dan Monsunal (Studi Kasus Kabupaten Pesisir Selatan, Sumatera Barat dan Kabupaten Karawang, Jawa Barat). [Skripsi]. Fakultas Matematika dan Ilmu Pengetahuan Alam. Institut Pertanian Bogor. Bogor.
8. Rahayu, N.D., B. Sasmito., dan N. Bashit. 2018. Analisis Pengaruh Fenomena Indian Ocean Dipole (IOD) Terhadap Curah Hujan di Pulau Jawa. Jurnal Geodesi Undip. 7 (1). 57-67.
9. Saji, N. H.; B. N. Goswani; P. N. Vinayachandran; and T. Yamagata, 1999. A Dipole Mode in the Tropical Indian Ocean. Journal Nature . 401. 360 -363.
10. Sahu N, S.K. Behera, Y. Yamashiki, K. Takara, and T. Yamagata . 2012. IOD and ENSO impacts on the extreme stream-flows of Citarum River in Indonesia. Climate Dynamics. 39. 1673-1680.
11. Schulzweida, U. 2019. CDO User Guide. MPI for Meteorology. 222.
12. Syafik, A., Kunarso., dan Hariadi. 2013. Pengaruh Sebaran Dan Gesekan Angin Terhadap Sebaran Suhu Permukaan Laut di Samudera Hindia (Wilayah Pengelolaan Perikanan Republik Indonesia 573) Jurnal Oseanografi. 3 (3). 318-328.
13. Syaifullah, D. 2010. Kajian Sea Surface Temperature (SST), Southern Oscillation Index (SOI) dan Dipole Mode pada Kegiatan Penerapan Teknologi Modifikasi Cuaca di Propinsi Riau dan Sumatera Barat Juli – Agustus 2009. Jurnal Sains & Teknologi Modifikasi Cuaca. 11 (1). 1-7.
14. Tjasyono, B., Atika, L., Ina, J., Ruminta, R., dan Sri, W. B. H. 2008. Dampak Variasi Temperatur Samudera Pasifik dan Hindia Ekuatorial Terhadap Curah Hujan di Indonesia. Jurnal Sains Dirgantara. 5 (2). 83-95.
15. Wahyuningrum, P.I., D. Simbolon., dan R. Rizkawati. 2011. Pengaruh Suhu Permukaan Laut Terhadap Hasil Tangkapan Ikan Tenggiri di Perairan Indramayu, Jawa Barat. [Skripsi]. Departemen Pemanfaatan Sumber Daya Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor. Bogor.
16. Wirjohamidjojo, S. dan Y. Swarinoto. 2010. Iklim Kawasan Indonesia (Dari Aspek Dinamik - Sinoptik). Badan Meteorologi Klimatologi dan Geofisika : Jakarta.
17. Yananto, A., dan R.M. Sibarani. 2016. Analisis Kejadian El Nino Dan Pengaruhnya Terhadap Intensitas Curah Hujan di Wilayah Jabodetabek (Studi Kasus : Periode Puncak Musim Hujan Tahun 2015/2016). Jurnal Sains & Teknologi Modifikasi Cuaca. 17 (2). 65-73.
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