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      Analisis Fenomena Urban Heat Island di Kota Bogor dengan Pemanfaatan Teknologi Cloud Computing

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      Date
      2021
      Author
      Muharam, Fauzan Nafis
      Setiawan, Sonni
      Hidayat, Rahmat
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      Abstract
      Fenomena Urban Heat Island (UHI) merupakan fenomena yang biasa terjadi di kota-kota besar karena tingginya kepadatan lahan terbangun. UHI dapat diidentifikasi menggunakan data citra satelit menggunakan teknik penginderaan jauh. Seiring berjalannya waktu, teknik penginderaan jauh dapat dilakukan melalui internet tanpa perlu mengunduh data terlebih dahulu dengan menggunakan teknologi cloud computing atau komputasi awan. Penelitian ini menggunakan Google Earth Engine sebagai platform komputasi awan untuk keperluan analisis data citra satelit. Data yang digunakan adalah Landsat 8 OLI/TIRS path 112 row 64 & 65 dan peta batas administrasi Kota Bogor. Penelitian ini mengidentifikasi fenomena UHI dengan mengestimasi suhu permukaan dan suhu udara, mengestimasi indeks spektral, dan mengestimasi Urban Thermal Field Variance Index (UTFVI). Hasil yang diperoleh menunjukkan bahwa sebaran suhu di Kota Bogor memiliki nilai yang tinggi di pusat Kota Bogor tepatnya di Kecamatan Bogor Tengah. Hal ini diperkuat dengan hasil UTFVI dimana Kecamatan Bogor Tengah memiliki nilai indeks terburuk. Kedua hasil ini dapat menggambarkan fenomena UHI di Kota Bogor. Nilai indeks spektral Normalized Difference Built-up Index (NDBI) memiliki pengaruh signifikan terhadap nilai suhu permukaan di Kota Bogor dengan nilai koefisien determinasi yang diperoleh adalah 0,769, 0,725, dan 0,782. NDBI dapat dijadikan acuan atau indikator fenomena UHI.
       
      The Urban Heat Island (UHI) phenomenon is a common phenomenon in big cities due to high density of built-up area. UHI can be identified using satellite image data with remote sensing techniques. As time goes by, remote sensing techniques can be done via internet without downloading the data first by using cloud computing technology. This study uses Google Earth Engine as a cloud computing platform for analyzing satellite image data. The data used are Landsat 8 OLI/TIRS path 112 row 64 & 65 and administrative boundary map of Bogor City. This study identified UHI phenomena by estimating the surface temperature and air temperature, estimating the spectral indices, and estimating Urban Thermal Field Variance Index (UTFVI). The results show that the temperature distribution in Bogor City has a high value in the center of Bogor City, precisely in Central Bogor District. This is reinforced by the UTFVI results where Central Bogor District has the worst index value. These two results can describe the UHI phenomenon in Bogor City. The Normalized Difference Built-up Index (NDBI) value has a significant effect on the surface temperature value in Bogor City. The coefficient of determination values obtained are 0.769, 0.725, and 0.782. NDBI can be used as a reference or indicator of the UHI phenomenon.
       
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      http://repository.ipb.ac.id/handle/123456789/108667
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      • UT - Geophysics and Meteorology [1720]

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