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Wiratmo, Joko
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Propagation Characteristics of Madden Julian Oscillation in the Indonesian Maritime Continent: Case Studies for 2020-2022 Istiqomah, Fadhilatul; Yulihastin, Erma; Wiratmo, Joko; Hermawan, Eddy; Trilaksono, Nurjanna Joko; Irawan, Dasapta Erwin; Yohanes, Kristy Natasha; Ayunina, Amalia Qurrotu
Agromet Vol. 38 No. 1 (2024): JUNE 2024
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.38.1.1-12

Abstract

Madden-Julian Oscillation (MJO) can affect weather and climate variability in the Indonesian Maritime Continent. MJO propagation is not always the same, previous research has classified MJO into 4 categories: slow, fast, stand, and jump. The objective of this study is to investigate the differences in MJO propagation and the factors that impact it. Daily data for variables such as Outgoing Longwave Radiation (OLR), zonal wind, and sea surface temperature are utilized in this research. The collected data is processed using composite methods based on the 8 MJO phases, with a specific focus on the years 2020, 2021, and 2022. The research findings suggest that warm sea surface temperatures in the Pacific Ocean and zonal winds dominated by Kelvin waves are favorable for MJO propagation. Conversely, cooling sea surface temperatures in the Pacific Ocean and zonal winds dominated by equatorial Rossby waves can hinder MJO propagation. Future researchers are expected to examine the impact of MJO propagation during extreme rainfall occurrences in several regions of Indonesia, as well as the application of machine learning and deep learning methods to predict MJO propagation in the future.
Pelatihan Calon Garda Depan Informasi Cuaca, Musim, dan Iklim Indonesia Wiratmo, Joko; Siregar, Plato Martuani
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 7 (2024): September
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i7.1341

Abstract

Peningkatan pemahaman masyarakat akan adanya perubahan iklim dapat meningkatkan kesadaran dan minat masyarakat untuk berperan serta dalam mitigasi perubahan iklim. Kegiatan webinar ini bertujuan untuk meningkatkan peran serta masyarakat terdidik dalam menanggapi isu perubahan iklim dan memperkuat interaksi antara berbagai pihak dalam upaya mitigasi perubahan iklim di Indonesia. Metode yang digunakan adalah edukasi melalui webinar bertema "Calon Garda Depan Cuaca dan Iklim," yang diadakan pada 21 Maret 2024 sebagai bagian dari peringatan Hari Meteorologi Sedunia. Webinar ini melibatkan pembicara dari berbagai instansi, seperti BMKG, ITB, UNSRI, BRIN, UNDIP, dan UNHAS, serta diikuti oleh 163 peserta dari 29 provinsi dengan latar belakang beragam. Metode webinar dipilih untuk mencapai jangkauan peserta yang luas dengan memberikan kesempatan interaksi langsung dengan para ahli. Kegiatan ini tidak hanya berhasil meningkatkan pemahaman masyarakat tentang isu perubahan iklim tetapi juga membentuk jejaring garda depan informasi cuaca dan iklim yang lebih kuat, sehingga diharapkan dapat meningkatkan kolaborasi antara pemerintah, sektor swasta, perguruan tinggi, masyarakat, dan media massa dalam menghadapi tantangan perubahan iklim yang semakin kompleks.
ENSO and IOD Influence on Extreme Rainfall in Indonesia: Historical and Future Analysis Hanifa, Risyda; Wiratmo, Joko
Agromet Vol. 38 No. 2 (2024): DECEMBER 2024
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.38.2.78-87

Abstract

Indonesia, as a maritime continent, is vulnerable to environmental disasters such as floods and landslides due to extreme rainfall. This study aims to identify changes in the influence of ENSO and IOD on extreme rainfall across Indonesia, specifically during the September-October-November period. We used rainfall and sea surface temperature data from the CMIP6 climate model for the historical period (1985-2014), near-future (2031-2060), and far-future (2061-2090) projections under SSP2-4.5 and SSP 5-8.5 climate scenarios. The relation between rainfall dan ENSO/IOD was simply defined by linear regression approach. We analyzed the change of influence by comparing the historical and the future condition. The results indicated that the changes in the teleconnection of ENSO and IOD to extreme rainfall in future is consistently negative, except for Java (near-future) and Kalimantan and southern Sumatra (far-future). Our finding revealed that significant changes in the teleconnection varied throughout maritime continent. The maximum change was found in Northern Kalimantan, which reached values of -80 mm/°C due to ENSO and -180 mm/°C due to IOD for near future. These findings highlight the spatial variability in teleconnection changes across Indonesia, underscoring the need for region-specific climate adaptation measures in response to evolving extreme rainfall patterns.
Rintisan Kawasan Binaan di Lereng Selatan Gunung Manglayang Jawa Barat Wiratmo, Joko; Irawan, Dasapta Erwin; Sulistyawati, Endah
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 8 (2024): Oktober
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i8.1437

Abstract

Wilayah lereng Selatan Gunung Manglayang Jawa Barat, mengalami kerusakan lingkungan akibat perkembangan pembangunan sebagai kota pendidikan dan pemukiman, termasuk penurunan kualitas air tanah dan krisis air bersih. Program “Keluarga Sadar Lingkungan” (Kadarling) dirancang untuk meningkatkan kesadaran generasi muda terhadap pelestarian lingkungan yang dirintis untuk wilayah binaan  selatan Manglayang. Kegiatan pengabdian masyarakat berupa pelatihan ini dilakukan di SMA Negeri 24 Bandung yang diikuti oleh 72 siswa yang terbagi dalam dua kelompok yakni kelompok pertama mengikuti sesi edukatif mengenai cuaca, iklim, air tanah, dan peranan pohon dalam ekosistem, sementara kelompok kedua terlibat dalam praktikum pengukuran porositas tanah, pengamatan awan, dan teknik penanaman pohon. Hasil kegiatan menunjukkan peningkatan pemahaman mahasiswa tentang interaksi antara faktor-faktor lingkungan tersebut dan memberikan keterampilan praktis terkait konservasi lingkungan. Program ini diharapkan  efektif dalam meningkatkan kesadaran lingkungan siswa dan keluarganya serta memberikan kontribusi positif terhadap penghijauan di lingkungan sekolah.
Empowerment of Future Frontline Indonesian Weather and Climate Information Wiratmo, Joko; Siregar, Plato Martuani
Jurnal Pengabdian Masyarakat Bangsa Vol. 3 No. 8 (2025): Oktober
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v3i8.3220

Abstract

Climate change increases the frequency and intensity of hydrometeorological disasters in Indonesia. However, community climate literacy is still limited, thus hampering the speed of mitigation and adaptation efforts. For this reason, a program to empower prospective vanguards of weather and climate information is held as a strategic partner of BMKG in delivering information effectively and contextually. This program is in the form of interactive webinars, online discussions, and in the future can be in the form of field training, which will be collaborated with environmentally conscious family activities (Kadarling) to increase community capacity and climate literacy. This approach is expected to strengthen an inclusive early warning system and community resilience in dealing with climate change. The main outcome of this activity is primarily the increased knowledge about weather, seasons, and climate in Indonesia, along with the enhanced networking among researchers and observers of weather and climate from various backgrounds. This is evidenced by the relatively increased number of members in the WhatsApp group that was formed, which is still related to the webinar that was held.
Co-Authors Ayunina, Amalia Qurrotu Dasapta Erwin Irawan Dasapta Erwin Irawan, Dasapta Erwin Eddy Hermawan Hanifa, Risyda Istiqomah, Fadhilatul Siregar, Plato Martuani Sulistyawati, Endah Trilaksono, Nurjanna Joko Yohanes, Kristy Natasha Yulihastin, Erma