Jurnal Teknologi dan Rekayasa Sumber Daya Air
Vol. 2 No. 2 (2022): Jurnal Teknologi dan Rekayasa Sumber Daya Air (JTRESDA)

Validasi Data Curah Hujan Satelit dengan Data Stasiun Hujan di DAS Sadar, Kabupaten Mojokerto

Dhany Amar Dermawan (Unknown)
Donny Harisuseno (Unknown)
Jadfan Sidqi Fidari (Unknown)



Article Info

Publish Date
02 Aug 2022

Abstract

Hydrological analysis is a basis for water building planning. However, the problem in hydrological analysis usually in the availability of data, such as empty/incomplete rain data, inadequate rain stations, rain recording which is still done manually so that it can increase the risk errors. To overcome the problem of the lack of availability of rain data, the alternative that can be used is using satellite rainfall. Satellite rainfall is using remote sensing technology, so it is possible to get wider area coverage, near real time data, fast and free access and economical. This study was include for calibration and validation of uncorrected satellite rainfall data in the Sadar watershed area, Mojokerto Regency and using two types of satellites, TRMM and CHIRPS. The data validation analysis methods used are Nash-Sutcliffe Efficiency (NSE), Correlation Coefficient (R), and Root Mean Squared Error-observations standard deviation ratio (RSR). The results of the validation of the TRMM and CHIRPS satellite rainfall data show that the TRMM satellite has the suitability of the field data by 70,3% while the CHIRPS satellite has the suitability of the field data by 20,7%. So, from the overall analysis can be concluded that TRMM data can be recommended as an alternative hydrology data in the Sadar watershed.Analisis hidrologi adalah suatu dasar perencanaan bangunan air. Namun, permasalahan dalam analisis hidrologi biasanya terletak pada ketersediaan data yang kurang memadai, contoh seperti data hujan yang kosong/tidak lengkap, stasiun hujan yang tidak memadai, pencatatan hujan yang masih dilakukan secara manual sehingga dapat meningkatkan risiko kesalahan pencatatan. Untuk mengatasi permasalahan tentang minimnya ketersediaan data hujan, maka alternatif yang dapat digunakan adalah menggunakan curah hujan satelit. Curah hujan satelit yang menggunakan teknologi penginderaan jauh, sehingga cakupan wilayah luas, data near real time, akses cepat dan gratis serta ekonomis. Studi ini dilakukan untuk kalibrasi dan validasi terhadap curah hujan satelit belum terkoreksi pada wilayah DAS Sadar, Kabupaten Mojokerto dan menggunakan dua jenis satelit yaitu TRMM dan CHIRPS. Metode analisis validasi data yang digunakan berupa Nash-Sutcliffe Efficiency (NSE), Koefisien Korelasi (R), dan Root Mean Squared Error- observations standard deviation ratio (RSR). Berdasarkan hasil perhitungan satelit TRMM menunjukan kesesuaian data dengan data lapangan sebesar 70,3%, sedangkan untuk satelit CHIRPS menunjukan kesesuaian data dengan data lapangan sebesar 20,7%, sehingga dapat disimpulkan TRMM dapat direkomendasikan menjadi data alternatif hidrologi 

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Journal Info

Abbrev

jtresda

Publisher

Subject

Earth & Planetary Sciences Engineering

Description

Jurnal Teknologi dan Rekayasa Sumber Daya Air is a scientific journal published regularly twice per year by Water Resources Engineering Department, Universitas Brawijaya. The paper submitted in this journal covers the fields of Water Resources Information System, Water Resources Conservation, Water ...