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All Journal Jurnal Ilmu Lingkungan Jurnal Pendidikan Geografi Undiksha Jurnal Sains dan Pendidikan Fisika Majalah Geografi Indonesia JFA (Jurnal Fisika dan Aplikasinya) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JPSE (Journal of Physical Science and Engineering) Jurnal Sains & Teknologi Modifikasi Cuaca Jurnal Geografi, Edukasi dan Lingkungan Jurnal Meteorologi Klimatologi dan Geofisika Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Journal of Marine Research and Technology Jurnal Kelautan Nasional Jurnal Sains Dirgantara JURNAL METEOROLOGI DAN GEOFISIKA Indonesian Physical Review To Maega: Jurnal Pengabdian Masyarakat JTIK (Jurnal Teknik Informatika Kaputama) Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika J-Intech (Journal of Information and Technology) Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Meteorologi dan Geofisika Journal of Information Technology
Aries Kristianto
Sekolah Tinggi Meteorologi Klimatologi Dan Geofisika
Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Indonesian Physical Review

 1 
EVALUATING SURFACE TEMPERATURE VARIABILITIES AND CLIMATE EXTREMES IN THE DIENG PLATEAU OVER THREE DECADES Nugraheni, Imma Redha; Virgianto, Rista Hernandi; Kristianto, Aries; Septiadi, Deni; Nugroho, Hapsoro Agung; Soegiarto, Ita; Radjab, Fachri
Indonesian Physical Review Vol. 8 No. 2 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i2.493

Abstract

This study examines long-term surface temperature variability and climate extremes in the Dieng Plateau, Central Java, from 1991 to 2022. Despite its tropical location, the region’s unique high-altitude microclimate, with frequent frost events, has raised concerns for local agriculture, particularly potato farming. However, limited observational data has constrained in-depth assessments. To address this, we used bias-corrected ERA5 reanalysis data, calibrated using hourly observations from an Automatic Weather Station (AWS) installed in 2021. The analysis focused on climatological trends and temperature-related extreme indices following the Expert Team on Climate Change Detection and Indices (ETCCDI) framework. Our findings indicate seasonal patterns in diurnal temperatures, with JJA (June–August) exhibiting the greatest variability and the lowest night time temperatures, conditions favorable to frost formation. Among the extreme indices, warmest night temperatures (TNx) increased significantly at a rate of 0.017°C/year (p < 0.01), while coldest night temperatures (TNn) showed a slight but significant decline. The frequency of warm nights (TN90p) rose by 0.242 days/month, while cold nights (TN10p) decreased by 0.161 days/month. Meanwhile, trends for warm days (TX90p), cold days (TX10p), and cold spell duration (CSDI) were statistically insignificant. These results highlight the plateau’s sensitivity to night time warming and the potential risk of climate-driven shifts in frost occurrence. The combination of high-resolution reanalysis data and extreme indices offers valuable insight into microclimate behavior in tropical highlands, with direct implications for frost risk management and climate adaptation strategies in vulnerable agricultural zones.
SEA-LEVEL VARIABILITY IN THE JAVA SEA LINKED TO MONSOON FORCING AND CLIMATE TELECONNECTIONS (2009–2024) Nugraheni, Imma Redha; Lestari, Tri Anggun; Kristianto, Aries; Avrionesti, Avrionesti; Rejeki, Hasti Amrih; Wijaya, Yusuf Jati
Indonesian Physical Review Vol. 8 No. 3 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i3.571

Abstract

The Java Sea is a shallow, strait-connected shelf where seasonal monsoon forcing and climate modes can strongly modulate sea level, yet their sectoral expressions remain under-resolved. Altimetric observations from 2009–2024 (DUACS) are analyzed and validated against a network of Indonesian tide gauges and partition the basin into western (W-JS), central (C-JS), and eastern (E-JS) sectors. After detrending, the seasonal cycle is diagnosed via amplitude and phase metrics and quantifies interannual teleconnections using lead–lag cross-correlations (−12 to +12 months) between sea-level anomaly (SLA) and the Dipole Mode Index (DMI) and Southern Oscillation Index (SOI), with confidence intervals. DUACS reproduces tide-gauge variability with high skill (median correlation ≈ 0.82; RMSE 5–11 cm; small negative biases), supporting its use as a basin proxy. Seasonally, SLA peaks in DJF, weakens in MAM, reaches a pronounced minimum in JJA, and recovers in SON, with marked zonal heterogeneity: E-JS exhibits the strongest annual range (~18 cm) versus W-/C-JS (~12–13 cm). The seasonal phase is non-synchronous (W-JS maxima in May–June; E-JS in December–January), while C-JS behaves as a transition zone. Interannually, IOD impacts are near-synchronous and negative (lag-0, r ~ −0.41 to −0.47 across sectors), whereas ENSO peaks at short positive lags (SOI leads by ~1 month; r ~ 0.45–0.53), implying higher sea level during La Niña and lower during El Niño. These sign-and-lag relationships, combined with tide and surge information, have the potential to inform seasonal outlooks for ports and low-lying coastal areas of Java.
Co-Authors Abigael, Febby Debora Achmad Zakir Adelina Lumban Gaol Adi Mulsandi Aditya Mulya Aditya Mulya Agung Hari Saputra Alamin, Mirza Virgianysah Alghazali, Muhammad Fathurrachman Alpentido, Rahmat Anggareta Khairunnisa Arno, Giarno Avrionesti, Avrionesti Aydin Umardani, Syarif Abdillah Bayu Edo Pratama Cahya, Shintia Dwi Carundyatama, Daniar Ihza Deffi Munadiyat Putri Deni Septiadi Deni Septiadi Dewi, Aprilia Mustika Djoko Prabowo Dudy Darmawan Wijaya Ejha Larasati Siadari Filbert Pascalis Almer Mahendra Gaol, Adelina Lumban Gaol, Adelina Lumban Hafidz Syarifuddin Hakim, Muhammad Zaidan Halawa, Reinal Taruna Wahyu Hapsoro Agung Nugroho Hari Winarto Hensatiti Niken Pratiwi Imawan Mashuri Immanuel JA Saragih Istihanah, Dini JUFRI, RAVYDO ANGGARA Kaizzi Larasati, Kanaya Khafid Pratama Lestari, Tri Anggun Mari Frystine Maulana, Muhammad Ikko Safrilda Maulana, Muhammad Ikko Safrilda Meldisa Putri Maulidyah Miranda Sahfira Tuna Muhammad Afif Shofiyudh Dhuha Muhammad Ryan Novitarini, Putu Widya NUGRAHEINI, IMMA REDHA Nugraheni, Imma Redha Prakoso, Adhitya Prakoso, Dhanu Pratama, Khafid Pratiwi, Hensatiti Niken Putri, Deffi Munadiyat Qosinatus Sa&#039;diyah Radjab, Fachri Rafi, Rayhan Rani, Annisa Puspa Rejeki, Hasti Amrih Rista Hernandi Virgianto Ryan, Muhammad Ryan, Muhammad Saifulloh, Naufaldi Saragih, Immanuel JA Siadari, Ejha Larasati Siadari, Ejha Larasati Simangunsong, Sabam Mikhael Soegiarto, Ita Syahid, Wisnu Tri Wahyu Hadi TUNA, MIRANDA SAHFIRA Usman Efendi Usman Efendi Wandarana, Wulan WINONA PUSPA BETARI Wulan Wandarana Youwe, Angelina Serena Gracella Nesty Yusuf Jati Wijaya Zakir, Achmad Zakir, Achmad Zikri, Muhammad Aulia