Pengaruh Transpor Uap Air Terhadap Kejadian Hujan Ekstrem di Supadio Kalimantan Barat
DOI:
https://doi.org/10.26418/pf.v12i1.67679Abstract
Cuaca ekstrem merupakan keadaan atau fenomena fisik atmosfer pada waktu tertentu, berskala jangka pendek dan bersifat ekstrem. Hujan ekstrem terjadi karena suhu permukaan air laut meningkat sehingga mempercepat terjadinya penguapan yang membentuk awan hujan. Penelitian ini dilakukan bertujuan untuk mengetahui pengaruh transpor uap air terhadap kejadian hujan ekstrem di Supadio yang didukung dengan keterkaitan berdasarkan nilai korelasi antara uap air dan curah hujan bulanan pada saat hujan ekstrem di Kalimantan Barat. Data yang digunakan adalah data online Badan Meteorologi Klimatologi Geofisika (BMKG) dan European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-5 yang divisualisasikan dengan kejadian hujan ekstrem, pola angin, transpor uap air, dan analisis korelasi uap air pada saat curah hujan ekstrem di Kalimantan Barat melalui perangkat lunak The Grid Analysis and Display System (GrADS). Hasil dari analisis transpor uap air menunjukkan pengaruh transpor uap air pada saat kejadian hujan ekstrem disebabkan adanya pola pergerakan angin yang membawa uap air cukup basah sebesar 400-800 kg/(ms). Hasil analisis korelasi uap air dan curah hujan bulanan pada saat hujan ekstrem dominan berkorelasi positif. Uap air sangat berpengaruh terhadap curah hujan di Kalimantan Barat yang cenderung memiliki nilai koefisien korelasi sebesar 0.2-0.8 dengan tingkat hubungan tinggi.
Kata Kunci : Kejadian hujan ekstrem, Pola angin, Transpor uap air, Korelasi uap air dan curah hujan
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Date: 24-05-2023
Prisma Fisika
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