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All Journal POSITRON Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Journal of Climate Change Society Jurnal Lingkungan Almuslim Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Yopi Ilhamsyah
Syiah Kuala University
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics Social Sciences

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Analysis of Projected Temperature Changes in Aceh Province Ilhamsyah, Yopi; Rahmy, Yustya; Marwan, Marwan; Kadarsah, Kadarsah
POSITRON Vol 13, No 2 (2023): Vol. 13 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i2.60389

Abstract

The objective is to analyse temperature changes and their future projection in Aceh. The activities consist of collecting past and future temperature data, preparing materials for processing, and analyzing past and future temperature data (climate change projections). The data used are monthly average temperature data from data global climate model, e.g., csiromk3.6-hist-1986-2005-tas, csiromk3.6-rcp45- 2016-2035-tas, csiromk3.6-rcp45-2046-2065-tas, csiromk3.6-rcp45-2081-2100- tas, csiromk3.6-rcp85-2016-2035-tas, csiromk3.6-rcp85-2046-2065-tas, and csiromk3.6-rcp85-2081-2100-tas. The study began with reading climate data in NetCDF format using GRADS software, data processing using CDO software, providing a coordinate system using QGIS software, making climate change projection maps using ArcGIS software, and making climate change graphs using spreadsheet programs. Two scenarios, i.e., RCP4.5 and RCP8.5 are used to analyse the projected temperature changes in the short-term (2016 – 2035), medium-term (2046-2065), and long-term (2081-2100). The results show that the RCP4.5 projection shows a lower change in temperature rise than the RCP 8.5. A change in a temperature rise of up to 5°C was found in the RCP8.5 scenario.
Evaluation of GSMaP Rainfall Data in the Aceh Region Sahlan, Muhammad; Ilhamsyah, Yopi; Fadli, Muhammad; Masrurah, Zakia
Journal of Climate Change Society Vol. 2 No. 1 (2024)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jccs/Vol2-iss1/21

Abstract

Rainfall measurement data in the field is quite limited, however, satellite data obtained by remote sensing methods are widely available. However, its accuracy must still be tested using observational rainfall data. The objective of this research was to validate GSMaP satellite estimated rainfall data with Automatic Rain Gauge (ARG) rainfall data at rain stations dispersed over Aceh Province's west-central region, as well as to identify the primary drivers for GSMaP data error. ARG and GSMaP data sources. A comparison of GSMaP data accuracy using a combination of Pearson and RMSE tests shows that GSMaP performance is very low in the dry and transition seasons and significantly better in the rainy season. GSMaP, on the other hand, is still unable to offer sufficient precise rainfall estimation data for each season. Meanwhile, a comparison by elevation shows that GSMaP data is not fully reliable.
The influences of sea surface temperatures on the rainfall onset in the west-south region of Aceh Dani, Anggun Arwulan; Ilhamsyah, Yopi; Purnawan, Syahrul
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.31181

Abstract

Rainfall variability is influenced by several annual global and regional phenomena including the influence of monsoons, El Nino Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), La Nina, and local climates. Sea surface temperature is one of the elements that affect weather patterns in Indonesia. This is because sea surface temperature plays an important role in the evaporation process, thus affecting cloud formation and subsequently affecting rainfall. The purpose of this study was to obtain information about the effect of sea surface temperatures on the onset in the Southwest Aceh region. The method used in this study is the correlation method between sea surface temperature anomalies (SST) and rainfall. The results of this study show that rainfall in the West-South region of Aceh varies greatly and has an equatorial pattern. The equatorial pattern is characterized by a rainfall type with a bimodal shape or there are two rain peaks during the year, namely around March and October. A positive anomaly in the West-South region of Aceh indicated that the rainfall at that time was higher than normal. Meanwhile, negative anomalies indicate that rainfall in the region is lower than normal conditions. The beginning of the average rainy season that occurs in the Southwest Aceh region starts on the 25th which occurs in September and ends until February. The beginning average rainy season that occurs in the West-South region of Aceh, starts on the 25th basis which occurs in September, and ends until February. The highest onset occurred in the Southwest Aceh area, which was 0,2059, and the beginning of the lowest rainy season or regression occurred in the West Aceh area, which was 0,0122.Keywords:Sea surface temperatureRainfallWest-South AcehCorrelation
The influences of sea surface temperatures on the rainfall onset in the west-south region of Aceh Dani, Anggun Arwulan; Ilhamsyah, Yopi; Purnawan, Syahrul
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.31181

Abstract

Rainfall variability is influenced by several annual global and regional phenomena including the influence of monsoons, El Nino Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), La Nina, and local climates. Sea surface temperature is one of the elements that affect weather patterns in Indonesia. This is because sea surface temperature plays an important role in the evaporation process, thus affecting cloud formation and subsequently affecting rainfall. The purpose of this study was to obtain information about the effect of sea surface temperatures on the onset in the Southwest Aceh region. The method used in this study is the correlation method between sea surface temperature anomalies (SST) and rainfall. The results of this study show that rainfall in the West-South region of Aceh varies greatly and has an equatorial pattern. The equatorial pattern is characterized by a rainfall type with a bimodal shape or there are two rain peaks during the year, namely around March and October. A positive anomaly in the West-South region of Aceh indicated that the rainfall at that time was higher than normal. Meanwhile, negative anomalies indicate that rainfall in the region is lower than normal conditions. The beginning of the average rainy season that occurs in the Southwest Aceh region starts on the 25th which occurs in September and ends until February. The beginning average rainy season that occurs in the West-South region of Aceh, starts on the 25th basis which occurs in September, and ends until February. The highest onset occurred in the Southwest Aceh area, which was 0,2059, and the beginning of the lowest rainy season or regression occurred in the West Aceh area, which was 0,0122.Keywords:Sea surface temperatureRainfallWest-South AcehCorrelation
PENGARUH SUHU MUKA LAUT TERHADAP AWAL MASUK MUSIM HUJAN DI WILAYAH UTARA-TIMUR ACEH Ilhamsyah, Yopi; Mahera, Ulfa; Oktavina, Citra
Jurnal Lingkungan Almuslim Vol 2 No 2 (2023): Jurnal Lingkungan Almuslim
Publisher : Program Studi Magister Pengelolaan Sumberdaya Alam dan Lingkungan Universitas Almuslim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51179/jla.v2i2.2110

Abstract

Aceh is a province located in the westernmost part of the Indonesian archipelago and surrounded by waters, located in a tropical area that receives the most solar radiation. The condition of the Aceh region which is mountainous and has valleys results in different and varied rainfall patterns. The sea is a more important role than the land in the process of rain. Where some have concluded that sea surface temperature (SST) and rainfall have a relationship. Therefore, it is necessary to conduct research on the relationship between SST and the onset of the rainy season and the characteristics of rainfall in the North- East region of Aceh. The purpose of this research study is to obtain information on the effect of SST and rainfall in the North-East region of Aceh. The method used in this research is correlation analysis. Based on the results of data analysis in the North-East region of Aceh, the rainfall pattern in the North-Eastern region of Aceh is monsoon type with little influence from the equatorial. The correlation between rainfall and SST anomalies shows different values in each region. The results of the correlation analysis of the onset, the highest occurred in the Banda Aceh with a value of 0,1495 which occurred in the 25th dekad and the length of the rainy season lasted for the 12th dekad. Meanwhile, the lowest occurred in East Aceh district, i.e., 0,0278 which occurred in the 24th dekad with the length of the rainy season last for 13 dekad.
Co-Authors Dani, Anggun Arwulan Kadarsah Kadarsah, Kadarsah Mahera, Ulfa Marwan Marwan Masrurah, Zakia Muhammad Fadli Muhammad Sahlan Oktavina, Citra Rahmy, Yustya Syahrul Purnawan