Open AccessKAJIAN KONDISI ATMOSFER DI WILAYAH INDONESIA SAAT PERIODE AKTIFNYA BADAI TROPIS KAI-TAK
Author(s) -
Prabu Aditya Sugianto,
Mukhamad Adib Azka,
Reynold Mahubessy,
Paulus Agus Winarso
Publication year - 2019
Publication title -
prosiding snfa (seminar nasional fisika dan aplikasinya)
Language(s) - English
Resource type - Journals
eISSN - 2548-8325
pISSN - 2548-8317
DOI - 10.20961/prosidingsnfa.v3i0.28550
Subject(s) - tropical cyclone , climatology , precipitation , typhoon , cyclone (programming language) , geography , environmental science , meteorology , geology , field programmable gate array , computer science , computer hardware
Tropical cyclone are weather phenomena that hardly occur in Indonesia, but their effects can affect atmospheric conditions in the Indonesian region, especially in areas near its growth. One of the tropical cyclones that occurred near the territory of Indonesia is Kai-Tak tropical cyclone. Kai-Tak tropical cyclone occurred on December 13-22, 2017 in Philippine waters. In this study, atmospheric conditions in the Indonesian region will be examined during the Kaitak tropical cyclone. The data used in this study are ECMWF reanalysis model data (European Center for Medium Weather Forecast) in the form of vorticity data, Moisture Transport, and wind speed and direction, and also satellite data, namely Himawari-8 satellite IR-1 channel for viewing distribution. spatial cloud propagation index occurring as well as the Global Satellite Mapping of Precipitation (GSMaP) satellite to see the spatial distribution of rainfall as a result of Kai-Tak tropical cyclone. The results showed that in the period December 13-16 2017, in the northern part of Sulawesi, the eastern part of Kalimantan Island, the northern region of Sulawesi Island to the northern part of Halmahera Island and parts of Southern Sumatra and Java were indirectly affected by tropical storms Kai -not where Kai-Tak tropical storms cause light to moderate intensity rainfall in the region. Whereas in the period of 17-22 December 2017 where the weak tropical storms (tropical depression) rainfall that occurred in most parts of Indonesia occurred due to the spread of air masses from Asia.Abstrak: Badai tropis merupakan fenomena cuaca yang hampir tidak terjadi di Indonesia, tetapi dampaknya dapat mempengaruhi kondisi atmosfer di wilayah Indonesia khususnya di wilayah dekat pertumbuhannya. Salah satu badai tropis yang terjadi di dekat wilayah Indonesia yaitu badai tropis Kai-tak. Badai tropis Kai-tak terjadi pada periode 13-22 Desember 2017 di perairan Filipina. Pada penelitian ini akan dikaji kondisi atmosfer di wilayah Indonesia pada saat terjadinya badai tropis Kaitak. Data yang digunakan dalam penelitian ini yaitu data model reanalysis ECMWF (European Centre for Medium Weather Forecast) berupa data vortisitas, Moisture Transport , serta arah dan kecepatan angin, Selain itu digunakan juga data satelit yaitu satelit Himawari-8 kanal IR-1 untuk melihat distribusi spasial indeks konvektif sebaran awan yang terjadi serta satelit Global Satellite Mapping of Precipitation (GSMaP) untuk melihat distribusi spasial curah hujan sebagai dampak dari badai tropis Kai-tak. Hasil penelitian menunjukkan bahwa pada periode 13-16 Desember 2017 , di wilayah Sulawesi bagian utara,wilayah Pulau Kalimantan bagian timur,wilayah utara Pulau Sulawesi hingga wilayah utara Pulau Halmahera serta sebagian Sumatera bagian Selatan dan Pulau Jawa terkena dampak secara tidak langsung dari badai tropis Kai-tak dimana badai tropis Kai-tak mengakibatkan hujan dengan intensitas ringan hingga sedang di wilayah tersebut. Sedangkan pada periode 17-22 Desember 2017 dimana badai tropis melemah (tropical depression) curah hujan yang terjadi di sebagian besar wilayah Indonesia terjadi akibat adanya penjalaran massa udara dari Asia.