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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

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

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 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

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

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.

The Urgency of Integrating Local Wisdom and Disaster-Resilient Character in the Merdeka Curriculum through the Disaster-Safe Education Unit Susilawati, Susilawati; Sofyan, Hizir; Ilhamsyah, Yopi; Ridha, Syahrul
Geosfera Indonesia Vol. 9 No. 3 (2024): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v9i3.43238

Disasters can occur at unpredictable times; therefore, an appropriate disaster mitigation is needed. This research question is about how to integrate local wisdom and disaster resilience in the Merdeka Curriculum through a disaster-safe education program unit. Therefore, this study aims to reveal the importance of this integration. Questionnaires were distributed via Google Forms to all teachers in Aceh and several other regions in Indonesia, such as vocational school teachers in Kalimantan. A total of 144 teachers were respondents in this research. In addition, data was collected through the study literature review (SLR) method. The results of this study are (1) the value of local wisdom needs to be integrated into learning in the Merdeka curriculum to improve disaster resilience, (2) the Project Strengthening Pancasila Profile in the Merdeka Curriculum can support the integration of local cultural values and the character of disaster resilience, (3) the program The Disaster Safe Education Unit has an important role in disaster risk reduction. Therefore, stakeholders, the community, and the government need to pay attention to this condition to create students and communities who have a disaster-resilient character.

The Urgency of Integrating Local Wisdom and Disaster-Resilient Character in the Merdeka Curriculum through the Disaster-Safe Education Unit Susilawati, Susilawati; Sofyan, Hizir; Ilhamsyah, Yopi; Ridha, Syahrul
Geosfera Indonesia Vol. 9 No. 3 (2024): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v9i3.43238

Disasters can occur at unpredictable times; therefore, an appropriate disaster mitigation is needed. This research question is about how to integrate local wisdom and disaster resilience in the Merdeka Curriculum through a disaster-safe education program unit. Therefore, this study aims to reveal the importance of this integration. Questionnaires were distributed via Google Forms to all teachers in Aceh and several other regions in Indonesia, such as vocational school teachers in Kalimantan. A total of 144 teachers were respondents in this research. In addition, data was collected through the study literature review (SLR) method. The results of this study are (1) the value of local wisdom needs to be integrated into learning in the Merdeka curriculum to improve disaster resilience, (2) the Project Strengthening Pancasila Profile in the Merdeka Curriculum can support the integration of local cultural values and the character of disaster resilience, (3) the program The Disaster Safe Education Unit has an important role in disaster risk reduction. Therefore, stakeholders, the community, and the government need to pay attention to this condition to create students and communities who have a disaster-resilient character.

The influences of the Indian Ocean Dipole (IOD) on rainfall in South Aceh Permatasari, Ratna; Ilhamsyah, Yopi; Purnawan, Syahrul; Setiawan, Ichsan; Ramadhaniaty, Mutia; Sutarni, Sutarni; Pristiwantoro, Eko Cahyo
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.25984

This study aimed to examine the influences of the Indian Ocean Dipole (IOD) on rainfall in three districts in South Aceh. The analysis was undertaken using Dipole Mode Index (DMI) data and five years of rainfall (2016 to 2020) in West Labuhan Haji, Tapak Tuan, and Bakongan areas. This research employed a correlation analysis and the Principal Component Analysis, followed by Cluster Analysis to investigate the relationship between IOD and rainfall at the study location. The negative IOD occurred in 2016, and the positive IOD occurred in 2017, 2018, 2019, and 2020. The strongest positive DMI was in October 2019 (1.123C), while the strongest negative DMI was in July 2016 (0.661C). Generally, the sub-districts of West Labuhan Haji, Tapak Tuan, and Bakongan always have high rainfall. The highest rainfall in West Labuhan Haji was recorded in January 2017 (1014 mm/month), in Tapak Tuan in November 2017 (1073 mm/month), and in Bakongan in July 2020 (605 mm/month). The correlation between DMI and rainfall in the three locations shows different findings. Although it was very small, the IOD affected the rainfall in West Labuhan Haji, Tapak Tuan, and Bakongan. In West Labuhan Haji, the highest correlation was in lag 1 (0.188); in Tapak Tuan, the highest correlation was in lag 2 (0.156), while in Bakongan, the highest correlation was in lag 2 (-0.191). The correlations in these three locations are considered weak. Thus, the IOD is not the main factor affecting the rainfall in West Labuhan Haji, Tapak Tuan, and Bakongan. As South Aceh is located in windward, the orographic effect may influence high rainfall in this region.Keywords:DMIRainfallPrincipal component AnalysisWest Labuhan HajiTapak TuanBakongan

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