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Nofi Yendri Sudiar
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Research Center for Climate Change (RCCC) Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) Universitas Negeri Padang Jl. Prof. Dr. Hamka Air Tawar Padang
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Kota padang,
Sumatera barat
INDONESIA
Journal of Climate Change Society
Published by Universitas Negeri Padang
ISSN : -     EISSN : 30249961     DOI : https://doi.org/10.24036/jccs/Vol1-iss1
Core Subject : Humanities, Science, Social, Engineering,
Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Physics Social Sciences
Journal of Climate Change Society (JCCS) memiliki fokus dengan multidisiplin ilmu dan bidang kajian antara lain: Klimatologi, Ekologi, Mikrobiologi, Energi Terbarukan, Sumber Daya Air, Pertanian, Perikanan, Kesehatan, Komunikasi, Kelautan, Kehutanan, Sosiologi dan lain sebagainya.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 32 Documents
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Understanding the Characteristics of 1996 Extreme Rainfall and Its Association with a Megalandslide in Podi Watershed, Central Sulawesi, Indonesia Djuraini, Moh. Fahry
Journal of Climate Change Society Vol. 3 No. 2 (2025)
Publisher : Universitas Negeri Padang

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Abstract

The 1996 Podi megalandslide in Central Sulawesi, Indonesia, occurred in a remote tropical watershed with limited data, causing severe geomorphic disturbance. Using Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) and post-event Landsat 5 imagery, this study reconstructs the hydrometeorological sequence preceding the event. Rainfall extreme indices from ETCCDI were analyzed to examine intensity, duration, and temporal distribution. Results reveal that September 1996 experienced prolonged dryness (Rx5day: 65 mm; Rx1day: 35–40 mm), which likely desiccated soils and reduced root–soil cohesion in the limestone–ophiolite terrain. In early October, rainfall intensified sharply (Rx5day: 216 mm; Rx1day: 113 mm), persisting until mid-November. The temporal overlap of antecedent dryness, intense rainfall, and fragile geology indicates a compound triggering mechanism. This study highlights how rainfall extremes contributed to slope failure in tropical montane watersheds and emphasizes the need for early warning frameworks integrating satellite-based rainfall and geological susceptibility in remote data-scarce regions.
Analysis of Vertical Atmospheric Structure on the Formation of Convective Clouds and Heavy Rainfall in Padang Pariaman Maharani, Trimike; Sudiar, Nofi Yendri; Amir, Harman; Zulhendra
Journal of Climate Change Society Vol. 3 No. 2 (2025)
Publisher : Universitas Negeri Padang

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Abstract

Padang Pariaman is one of the regions in West Sumatera that is highly vulnerable to hydrometeorogical disasters, particularly flooding caused by heavy rainfall. This study aims to analyze the influence of vertical atmospheric structure on the formation of convective clouds and heavy rainfall in the area. The data used include radiosonde observations and synoptic data from the Minangkabau Meteorological Station, as well as five atmospheric stability indices: Showalter Index (SI), K-Index (KI), Lifted Index (LI), Convective Available Potential Energy (CAPE), and Precipitable Water (PW). The study was conducted over one year, divided into four seasonal periods (DJF, MAM, JJA, SON). Multiple linear regression and correlation analysis were applied to evaluate the relationship between atmospheric indices and the occurrence of convective clouds and heavy rainfall. The results show that atmospheric instability generally increases during the DJF and MAM periods, as indicated by negative values of SI and LI, along with high values of CAPE and PW. These conditions support the development of Cumulonimbus clouds, which have the potential to produce heavy rainfall. Correlation analysis revealed a strong relationship between several stability indices—particularly CAPE and PW—and rainfall intensity. These findings suggest that analyzing vertical atmospheric structure using radiosonde data and RAOB indices can serve as an important early indicator in forecasting extreme weather events in Padang Pariaman.

Page 4 of 4 | Total Record : 32

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