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Abstrak :
The campus, as an educational area, has a variety of land cover with varying surface temperatures. Knowledge of land use in a localized urban environment and its effect on the Urban Heat Signature (UHS) of a university campus is insufficient, so it is essential to assess UHS-related localized urban environments. The objective of this study is to assess land cover and its effect on the UHS of two university campuses. The research used spatial-temporal analysis employing satellite images during the period 2013-2014. The areas studied were the University Malaya (UM) and University Indonesia (UI) campuses. The results show that the land cover of both university campuses has the same localized urban environment pattern. Based on Landsat 8 TIRS (100 m ground resolution) resolution, we estimated that both university campuses had UHS profiles related to vegetation cover of 25-33oC, with a mean of 28oC as the lowest temperature, and building cover with a profile of 33-39oC, with a mean of 35oC as the highest temperature caused effect from Land cover types. Google Earth visual interpretation and digitalization provided the land cover based on 10m×10m vector square grids with their attributes validated by field survey. The research shows a trend of UHS change between 2013 and 2014, with the maximum temperature of >30oC on the UM and UI Campuses with increased of temperature 1oC. The study concludes that the UHS behavior is an effect of its temporal relation with land cover, which is new knowledge on university campuses about localized urban environments.

Abstrak :
Saat ini 56,7% dari penduduk tinggal di kota di Indonesia. Tingginya persentasi ini selaras dengan Urbanisasi. Proses urbanisasi memiliki hubungan kuat dengan panas perkotaan. Selain suhu, luas penutupan lahan serta pertambahan jumlah penduduk juga berubah setiap tahunnya, pengurangan luas penutupan lahan bervegetasi mengakibatkan suhu semakin meningkat. Naiknya suhu pada lingkungan perkotaan menyebabkan dampak-dampak tertentu kepada masyarakat terhadap perubahan lingkungan. Tutupan lahan di lingkungan perkotaan memiliki rentang nilai suhu yang tinggi-rendah yang disebut dengan Urban Heat Signature. Penelitian ini dilaksanakan pada Kecamatan Bogor Tengah di Kota Bogor dengan mengolah citra Land Surface Temperature dari citra Landsat 9 TIRS dan Sentinel-2 untuk mendapatkan citra dengan resolusi tinggi, pengambilan suhu udara, dan penyebaran kuesioner mengenai dampak suhu pada kenyamanan termal manusia. Hasil pengolahan terlihat bahwa nilai suhu maksimum dari seluruh penggunaan di Kecamatan Bogor Tengah lebih dari 30°C. Suhu tertinggi terdapat pada permukiman tidak teratur dan lahan kosong, serta suhu terendah berada pada hutan kota. Variasi pada UHS dapat menciptakan persepsi termal pada manusia. Selisih suhu maksimum dan minimum tiap penggunaan lahan tidak memiliki hubungan dengan tingkat kenyamanan termal manusia. Meskipun begitu, besaran suhu minimum dan maksimum tiap penggunaan lahan memberikan efek terhadap kenyamanan termal manusia. ......Currently, 56.7% of the population lives in cities in Indonesia. This high percentage is in line with urbanization. The urbanization process has a strong relationship with urban heat. In addition to temperature, the area of land cover and the increase in population also change every year. Land use changes cause the temperature to increase. Rising temperatures in urban environments cause certain impacts on humans against environmental changes. Land use in urban areas has a range of high-low temperature values called the Urban Heat Signature. This research was conducted in Bogor Tengah District in Bogor City by processing Land Surface Temperature images from Landsat 9 TIRS and Sentinel-2 images to obtain high-resolution images, taking air temperature, and distributing questionnaires regarding the impact of temperature on human thermal comfort. The processing results show that the maximum temperature value of all land uses in the Bogor Tengah District is more than 30°C. The highest temperatures are in open spaces and irregular settlements, and the lowest are in urban forests. UHS variations can develop a thermal perception in humans. The difference between the maximum and minimum temperatures for each land use has no relationship with the level of human thermal comfort. Even so, the minimum and maximum temperatures for each land use affect human thermal comfort.