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All Journal Syntax Literate: Jurnal Ilmiah Indonesia El-Jughrafiyah : Jurnal Geografi dan Terapannya Journal of Geographical Sciences and Education Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian
Amri, Sayful
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Humanities Astronomy Earth & Planetary Sciences Education Environmental Science Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

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Journal : Journal of Geographical Sciences and Education

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Korelasi Spasial antara Indeks AUSMI dan WNPMI dengan Curah Hujan di Jabodetabek Hasibuan, Muhammad Ansori; Amri, Sayful
Journal of Geographical Sciences and Education Vol 3 No 1 (2025): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v3i1.203

Abstract

The Australian Summer Monsoon Index (AUSMI) and Western North Pacific Monsoon Index (WNPMI) help analyze the relationship between zonal winds and rainfall. In Jabodetabek, rainfall is affected by monsoons, El Nino Southern Oscillation (ENSO), and Dipole Mode Index (DMI). Understanding rainfall variability helps mitigate flood and drought risks. This study evaluates the relationship between AUSMI, WNPMI, and rainfall in Jabodetabek to support monsoon-based weather prediction. The data used include 850 hPa wind data from NCEP-NCAR Reanalysis 1 and rainfall data from GPCP Monthly Analysis, processed monthly. Analysis of 850 hPa zonal winds (2000–2023) shows dominant easterlies (-1 m/s), reducing rainfall, especially in the dry season. The AUSMI index (-2.32 m/s) correlates positively (0.6) with rainfall, indicating its role in moisture transport. Meanwhile, the WNPMI index (-1.32 m/s) shows a negative correlation (-0.7), as high values bring dry air, while low values promote rain cloud formation. These indices reveal distinct monsoonal impacts on Jabodetabek's rainfall patterns.
Co-Authors Adzan, Muhizzadin Abdul Amanu, Rendy Syahril Anam, Aqasha Raechan Aslama Afghani, Fadhli Hasibuan, Muhammad Ansori Kuswanaji, Panji Mashuri, Imawan Muhammad Aslam, Fadhil Saputro, Ogi Rahmawan Adi