PERBANDINGAN INDEKS FINE FUEL MOISTURE CODE (FFMC) DAN FIRE WEATHER INDEX (FWI) PADA SISTEM PERINGKAT BAHAYA KEBAKARAN HUTAN/LAHAN LUARAN WRF DENGAN OBSERVASI ( PERIODE: JUNI - AGUSTUS 2013)
DOI:
https://doi.org/10.31172/jmg.v15i2.181Keywords:
SPBK, indeks FFMC, indeks FWI, WRFAbstract
Pengembangan Sistem Peringkat Bahaya Kebakaran Hutan/Lahan (SPBK) dilakukan dengan memanfaatkan luaran WRF resolusi 9 km. Indeks Fine Fuel Moisture Code (FFMC) atau tingkat kemudahan terjadinya kebakaran dan Fire Weather Index (FWI) atau tingkat kesulitan pengendalian kebakaran disusun menggunakan parameter cuaca, seperti suhu, kelembapan, kecepatan dan arah angin, serta curah hujan kumulatif. Kondisi klimatologis periode bulan Juni–Agustus 2013 pada umumnya normal, tanpa dipengaruhi El-Nino maupun La-Nina. Dilakukan verifikasi parameter cuaca luaran WRF terhadap data observasi. Indeks FFMC dan FWI luaran WRF dibandingkan dengan hasil observasi pada 8 (delapan) lokasi yang tersebar di Sumatera dan Kalimantan. Hasil verifikasi luaran WRF menunjukkan korelasi yang kuat – sangat kuat dengan rentang nilai 0.53–0.80 untuk semua parameter penyusun indeks. Perbandingan indeks FFMC dan FWI luaran WRF dengan observasi mempunyai korelasi diatas 0.56 dengan maksimum persentase kesalahan sebesar 0.57. Berdasarkan hasil verifikasi, luaran WRF dapat digunakan untuk menyusun indeks FFMC dan FWI pada Sistem Peringkat Bahaya Kebakaran Hutan/Lahan.
Development of Land/Forest Fire Danger Rating System (SPBK) is done using WRF output resolution 9 km. Fine Fuel Moisture Index Code (FFMC) or a level of ease of fire and the Fire Weather Index (FWI) or the level of difficulty of fire control were prepared using weather parameters, such as temperature, humidity, wind speed, and direction, as well as the cumulative rainfall. Climate conditions in the period June to August 2013 at the generally normal, independent of the El-Nino and La-Nina. The WRF output weather parameters have been verified with observation data. FFMC and FWI index WRF outputs compared with observations at 8 (eight) locations are covered in Sumatra and Kalimantan. The result of verification WRF outputs showed a strong - very strong correlation with a value range 0.53-0.80 for all parameters making up the index. A comparison of FFMC and FWI index from WRF's output with observation correlates 0.56 with a maximum percentage error of 0.57. Based on the results of verification, WRF outputs can be used to index FFMC and FWI Land/Forest Fire Danger Rating System.
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