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All Journal Jurnal Ilmu Fisika Jurnal TELUK: Teknik Lingkungan UM Kendari
Diansyah, Pras
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Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology Physics

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Dynamics of Extreme Drought and Extreme Wet in Indonesia: Analysis of Frequency, Trends, and Spatial Distribution 1995–2024 Suhadi, Suhadi; Khairunnisa Putri, Jamiatul; Putra Sairi, Andi; Hayati, Tazkia; Anjli, Neneng; Diansyah, Pras; Mabruroh, Faizatul
Jurnal Ilmu Fisika Vol 18 No 1 (2026): March 2026
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.18.1.105-116.2026

Abstract

The climatological pattern of rainfall and the occurrence of extreme drought and extreme wet in Indonesia are influenced by monsoon dynamics, topography, and Sea Surface Temperature Anomalies (SSTA) in the Pacific and Indian Oceans. Although studies on extreme droughts in Indonesia exist, none have quantified the spatial frequency of extreme drought and rainfall events. This study aims to determine the frequency and trend of extreme drought and extreme rain in Indonesia during 1995–2024. Gridded precipitation data from the Global Precipitation Climatology Center (GPCC) with 0.5° resolution were used. Frequencies of extreme drought and extreme wet were calculated using the Standardized Precipitation Index (SPI), while trends were estimated from the Poisson Regression slope. Frequency and trend were computed for the grid to represent spatial distributions. SPI results at 3, 6, and 12-month scales show Sumatra, Kalimantan, and Papua experienced extreme droughts 8–12 times, with varying frequencies. Extreme droughts were widespread in eastern Indonesia during the dry season (JJA and SON), with longer persistence in SPI-6 and SPI-12. In contrast, extreme wet events occurred more frequently in western and central Indonesia, during the rainy season (DJF), when the western monsoon transported moisture from the Indian Ocean.
Analisis Temporal Kualitas Udara dan Variasi Suhu di Kota Palembang Berdasarkan Data IQAir Putri, Jamiatul Khairunnisa; Diansyah, Pras; Destina, Destina; Suriani, Febri; Seftini, Rien
Jurnal TELUK: Teknik Lingkungan UM Kendari Vol. 6 No. 1 (2026): Edisi Juni Tahun 2026 Jurnal TELUK: Teknik Lingkungan UM Kendari
Publisher : Universitas Muhammadiyah Kendari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51454/teluk.v6i1.1732

Abstract

Palembang is one of Indonesia’s major cities, characterized by high levels of transportation, trade, and development activity. The intensity of these activities can affect urban environmental conditions, including air quality and fluctuations in temperature over time. This study aims to analyze the temporal changes in air quality and temperature variations in Palembang City during the period of May 1–14, 2026, and to examine the relationship between the two variables. The data used consist of the Air Quality Index (AQI) obtained from IQAir and air temperature data from BMKG. The research method employed is a descriptive quantitative approach with statistical analysis, including descriptive analysis, time series graphs, Pearson correlation, simple linear regression, and t-test. The results show that the AQI values fall within the moderate category, ranging from 52 to 88, while the air temperature ranges from 26.8°C to 29.2°C and tends to be relatively stable. The correlation analysis indicates a negative relationship between temperature and AQI with a coefficient of -0.401, meaning that an increase in temperature tends to be followed by a decrease in AQI values. However, this relationship is not statistically significant (p > 0.05). The linear regression results also show that temperature does not have a significant effect on air quality. Thus, it can be concluded that changes in air quality in Palembang City are not solely influenced by air temperature, but also by other factors such as transportation activities, vehicle emissions, and other meteorological conditions.
Co-Authors Anjli, Neneng Destina, Destina Hayati, Tazkia Khairunnisa Putri, Jamiatul Mabruroh, Faizatul Putra Sairi, Andi Putri, Jamiatul Khairunnisa Seftini, Rien Suhadi Suhadi Suriani, Febri