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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Agromet Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmu Lingkungan Jurnal Sains & Teknologi Modifikasi Cuaca JTERA (Jurnal Teknologi Rekayasa) LIMNOTEK - Perairan Darat Tropis di Indonesia Jurnal Hidrosfir Indonesia Jurnal Sains Dirgantara JURNAL TEKNIK HIDRAULIK JURNAL SUMBER DAYA AIR Jurnal Tanah dan Iklim Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Pusat Inovasi Masyarakat Aceh International Journal of Science and Technology Jurnal Pendidikan Geosfer
Bambang Dwi Dasanto
Departemen Geofisika Dan Meteorologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Kampus-IPB Darmaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Proyeksi Perubahan Penggunaan Lahan dan Dampaknya Terhadap Respon Hidrologi DAS Ciliwung Hulu Sarif Robo; Hidayat Pawitan; Suria Darma Tarigan; Bambang Dwi Dasanto
JTERA (Jurnal Teknologi Rekayasa) Vol 3, No 2: December 2018
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v3.i2.2018.157-166

Abstract

Penggunaan lahan di DAS Ciliwung Hulu setiap tahunnya mengalami konversi, sehingga berdampak pada aliran permukaan dan debit puncak. Penelitian ini bertujuan untuk memproyeksikan perubahan penggunaan lahan dan dampaknya terhadap respon hidrologi DAS Ciliwung Hulu. Tools yang digunakan dalam penelitian ini terdiri dari tools analisis perubahan penggunaan lahan dan proyeksi yaitu model CLUE-S dan untuk respon hidrologi menggunakan tools HEC-GeoHMS yang dipadukan dengan tools GIS. Proyeksi perubahan penggunaan lahan pada tahun 2030 dengan nilai Kappa akurasi 0,93. Nilai NSE untuk kalibrasi dan validasi model HEC-HMS berkisar antara 0,700 – 0,621. Hasil simulasi respon hidrologi dari hasil proyeksi penggunaan lahan tahun 2030 terhadap dengan debit puncak 111,3 m3/det dan volume limpasan 6,00 x 106m3.
Evaluation of Flood Hazard Potency in Jakarta based on Multi-criteria Analysis RR Mashita Fauzia Hannum; I Putu Santikayasa; Bambang Dwi Dasanto
Agromet Vol. 36 No. 2 (2022): DECEMBER 2022
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.36.2.101-111

Abstract

The frequency of flood events in Indonesia has increased since 1990, especially in the capital city of Jakarta. Flood events have affected socio-economic activities, and have threaten community health in flood prone areas. Although many efforts have been performed to reduced flood impacts, research on flood hazard remains a research challenge. This study aims to map level of flood hazard in Jakarta and to determine the most affected factors that cause flood. First, we defined factors that influence flood, and combined an analytical hierarchy process (AHP) to determine their weighted values and GIS approach to determine their score values. The combination of weight and score value determined the flood hazard index (FHI). The sensitivity analysis and validation then were applied to determine the robustness of the approaches. Our results show that the most influenced factors determining flood hazard were rainfall intensity, land use, and slope, whereas geology is the less factor. Based on the sensitivity analysis and FHI validation, our approaches were able to represent 59% flood disaster in Jakarta. The pattern of FHI value was high in north areas and low in south areas. The findings indicated that north areas are more flood prone than south areas. Further, this research contributes to the improved approach of flood mitigation in Jakarta
Comparison Performance of the Multi-Regional Climate Model (RCM) in Simulating Rainfall and Air Temperature in Batanghari Watershed Unggul Handoko; Rizaldi Boer; Edvin Aldrian; Arnida L. Latifah; Bambang D. Dasanto; Apip Apip; Misnawati Misnawati
Aceh International Journal of Science and Technology Vol 8, No 2 (2019): August 2019
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2176.668 KB) | DOI: 10.13170/aijst.8.2.12340

Abstract

Many scientists assume that RCM output is directly used as input for climate change impact models, while it consists of systematic errors. Consequently, RCM still requires bias correction to be used as an input model. The purpose of this study was to analyze the RCM performance before and after bias correction, its best performance from several models, as well as to clarify the importance of bias correction before it is used to analyze climate change. As a result of this, the method used for bias correction was Distribution Mapping method (for rainfall) and Average Ratio-method (for air temperature). While the Generalized Extrem Valuedistribution (GEV) was used to analysis extreme rainfall. To determine the performance of the model before and after bias correction, statistical analysis was used namelyR2, NSE, and RMSE. Furthermore, ranking for every single model and Taylor Diagram was used to determine the best model. The results showed that the RCMs performance improved with bias correction. However, CSIRO-Mk3-6-0, CCSM4, GFDL-ESM2M, and MPI-ESM-MR models can be ignored as ensemble models, because they demonstrated poor performance in simulating rainfall. From this study, it was suggested that the best model in simulating daily and monthly rainfall was ACCESS1-0, while MIROC-ESM-CHEM (daily air temperature) and ACCESS1-0 (monthly air temperature) were best models used in simulating air temperature. Key words: RCM, bias correction, performance, rainfall, air temperature
PENILAIAN KENYAMANAN PARIWISATA KOTA DAN PANTAI DI PULAU LOMBOK MENGGUNAKAN METODE HOLIDAY CLIMATE INDEX (HCI) Bambang Dwi Dasanto; Citra Musafirah Isni Wahid; Rini Hidayati
Jurnal Pendidikan Geosfer Vol 7, No 1 (2022): Jurnal Pendidikan Geosfer
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (691.138 KB) | DOI: 10.24815/jpg.v7i1.25869

Abstract

Faktor penting yang perlu diperhatikan dalam pengembangan sektor pariwisata adalah kenyamanan iklim. Informasi kenyamanan iklim yang akurat merupakan panduan utama wisatawan dalam proses pengambilan keputusan untuk menentukan tempat wisata. Tujuan dari studi ini adalah menduga tingkat kenyamanan iklim untuk destinasi wisata pantai dan kota di Pulau Lombok dengan menggunakan pendekatan HCI. Untuk mencapai tujuan, penelitian ini terdiri dari dua tahap; pertama, menghitung nilai Humidex berdasarkan data suhu udara dan kelembapan relatif; dan, kedua, menentukan tingkat HCI berdasarkan informasi Humidex, persentase tutupan awan, jeluk hujan dan kecepatan angin. Hasil penelitian menunjukkan bahwa nilai HCI:kota adalah rendah dan ini masuk dalam kategori tidak nyaman dikunjungi terutama pada bulan Desember hingga April. Sementara itu, nilai HCI:pantai adalah tinggi dan masuk dalam kategori nyaman untuk dikunjungi terutama pada bulan Juli, Agustus, dan September.
Tingkat Kenyamanan Termal Lingkungan Kampus IPB Dramaga Menggunakan Pendekatan Physiological Equivalent Temperature (PET) Hutami Nur Saputri; Bambang Dwi Dasanto; Rini Hidayati
Jurnal Ilmu Lingkungan Vol 21, No 2 (2023): April 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.2.299-307

Abstract

Pembangunan kampus IPB di Dramaga telah menimbulkan dampak fisik maupun non-fisik, seperti peningkatan jumlah penduduk dan perubahan kepadatan bangunan permukiman. Dampak pembangunan wilayah tersebut akan mendorong terbentuknya kondisi iklim artifisial yang memengaruhi kenyamanan termal terhadap penduduk yang tinggal di wilayah itu. Berdasarkan permasalahan tersebut, penelitian ini bertujuan untuk mengidentifikasi karakteristik termal lingkungan sekitar kampus IPB Dramaga dengan menggunakan pendekatan indeks termal, yaitu Physiological Equivalent Temperature (PET). Karakteristik termal wilayah studi dapat diidentifikasi berdasarkan tiga tahapan. Pertama mengidentifikasi nilai indeks termal PET dengan menggunakan model RayMan pada tutupan lahan bervegetasi dan penggunaan lahan permukiman. Tahap kedua menentukan tingkat kenyamanan termal berdasarkan hasil survei kuesioner; dan ketiga memetakan hubungan antara indeks termal PET dan tingkat kenyamanan termal  menggunakan teknik GIS untuk mengidentifikasi karakteristik termal wilayah studi secara spasial. Hasil penelitian menunjukkan bahwa nilai indeks termal PET dipengaruhi oleh tingkat kerapatan naungan vegetasi dan rasio antara tinggi bangunan dan jarak antar bangunan (height/width atau H/W). Nilai indeks termal PET semakin meningkat dengan berkurangnya kerapatan naungan vegetasi dan turunnya nilai rasio bangunan baik pada waktu pagi, siang maupun sore hari. Karakteristik termal lingkungan sekitar kampus IPB Dramaga secara keseluruhan memiliki tingkatan persepsi ‘nyaman’ yaitu pukul 7.00 hingga pukul 9.00 dengan nilai PET antara 27 ºC dan 30 ºC. Persepsi sangat tidak nyaman terjadi pada pukul 12.00 hingga 13.00 dengan nilai PET antara 38 ºC dan 42 ºC. Tingginya tekanan termal yang berupa peningkatan nilai indeks termal PET dapat dikurangi  dengan menambah kerapatan naungan vegetasi. Naungan vegetasi terbukti mampu mengurangi rentang nilai PET dan meningkatkan kenyamanan termal di wilayah studi.
THE SEASONAL TREND OF UPPER-AIR AND VERTICAL TEMPERATURE PROFILE BASED ON RADIOSONDE OVER INDONESIA Eka Fibriantika; Rahmat Hidayat; Bambang Dwi Dasanto; Yunus Subagyo Swarinoto
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 23 No. 2 (2022): December 2022
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jstmc.v23i2.5393

Abstract

Radiosonde data is one of the data that can be used for upper-air climatological analysis. Pressure, air temperature (T), dew point temperature (Td), wind, and humidity (RH) are the types of data provided by radiosondes. Unfortunately, the utilization of radiosonde data in Indonesia has not been optimal, resulting in a lack of understanding of seasonal air parameter patterns and the vertical structure of the trend of changes in upper-air temperature in Indonesia. This study aims to analyze the seasonal upper-air parameters and analyze the vertical structure of the trend of changes in upper-air temperature in Indonesia. This study uses radiosonde data from 10 radiosonde observation stations in Indonesia. The analysis of seasonal air parameters was carried out by finding the average seasonal value, while the analysis of air temperature trends was carried out using the Mann-Kendall method. The results indicate that the dew point temperature is distinctly different seasonally than the seasonal air temperature. The seasonal dew point temperature difference ranges from 0.5 to 13 oC, while the seasonal air temperature difference ranges from -0.6 to 1.1 oC. The smaller T-Td value, the greater RH value. The trends in upper-air temperature show that most of the study area shows a trend of heating of the upper-air temperature in the troposphere (1000-250 mb), which is between  0.00005 to0.00058 oC/13 years, 0.00012 to 0.00031 oC/9 years, and 0.00009 to 0.00042 oC/10 years and cooling in the lower stratosphere(100 mb) is -0.00011 to -0.00067 oC/13 years.
RESPON MODEL HBV DAN MODEL TANGKI TERHADAP ESTIMASI DEBIT ALIRAN DI DAS BOGOWONTO, JAWA TENGAH Fitri Yusti Andini; Bambang Dwi Dasanto; I Putu Santikayasa
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i2.830

Abstract

ABSTRACT The scarcity of discharge data compared to rainfall data have driven the development of the rainfall-runoff model, such as the HBV and Tank models. This research aims to apply the rainfall-runoff model in the Bogowonto watershed and to assess the model outputs. The research consisted of two main stages: 1) model calibration and validation; 2) model evaluation which assesses the model performance based on the Nash-Sutcliffe Efficiency (NSE) index and the coefficient of determination (R2). The results showed that the pattern of the simulation discharge was in accordance with the observed discharge pattern; indicating performance of both models was good (NSE > 0.7 and R2 > 0.65). However, the performance of both models in the daily simulation, particularly at the beginning of the simulation period, is still not satisfactory as the simulated discharge does not match the observed discharge. In the next simulation period, the discharge of the model results were in accordance with the observed discharge; this means the performance of the model was better. In the monthly simulation, the performance of both models is not yet satisfactory during the wet season, but it is good during the dry season. Based on the results of the daily and monthly simulations, both models demonstrate good performance under low precipitation conditions, but their performance declines under high precipitation conditionsKeywords:       Bogowonto watershed; HBV; rainfall-runoff model; simulation; tank ABSTRAKKelangkaan data debit dibandingkan data curah hujan memacu perkembangan model hujan-limpasan, seperti model HBV dan model Tangki. Tujuan penelitian ini adalah menerapkan model hujan-limpasan pada DAS Bogowonto dan menilai luaran hasil model tersebut. Penelitian ini terdiri dari dua tahap. Tahap pertama adalah kalibrasi dan validasi model. Tahap kedua mengevaluasi model, yaitu menilai kinerja model berdasarkan status indeks NSE dan nilai koefisien determinasi. Hasil penelitian menunjukkan bahwa secara umum pola debit simulasi telah sesuai dengan pola debit observasi, ini berarti kinerja kedua model adalah baik (NSE > 0,7 dan R2 > 0,65). Namun, kinerja kedua model dalam simulasi harian, khususnya pada waktu awal simulasi, masih belum baik karena debit simulasi tidak sesuai dengan debit observasi.  Pada periode simulasi selanjutnya, debit hasil model telah sesuai dengan debit observasi; artinya, kinerja model telah semakin baik. Dalam simulasi bulanan, saat musim basah kinerja kedua model masih belum baik tetapi saat musim kering kinerja kedua model menunjukkan hasil yang baik. Berdasarkan hasil simulasi harian dan bulanan, kedua model menunjukkan kinerja yang baik saat hujan rendah tetapi saat hujan tinggi kinerja model mengalami penurunan.Kata Kunci:             DAS Bogowonto; HBV; model hujan-limpasan; simulasi; tangki
A Comparison of the Performance of the Weighted Ensembles Means in CORDEX-SEA Precipitation Simulations Aminoto, Tugiyo; Faqih, Akhmad; Perdinan; Koesmaryono, Yonny; Dwi Dasanto, Bambang
Agromet Vol. 38 No. 1 (2024): JUNE 2024
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.38.1.19-35

Abstract

Numerous studies stated that the performance of ensemble mean derived from multiple climate models generally surpassed the individual member model, and applying weighting factors potentially increase the ensemble mean of performance. This study aims to assess the performance of unweighted and weighted ensemble means of 9-modelled precipitation datasets in the CORDEX-SEA multi-model simulations for 1981-2005. The 9 datasets included: CNRM_a, ECE_b, GFDL_b, IPSL_b, HadGEM2_a, HadGEM2_c, HadGEM2_d, MPI_c, and NorESM1_d. The weighting factors were derived from the models' skill scores measured using five statistical-based metrics, namely Taylor, Pierce (SS), Tian skill score (Tian), Climate prediction index (CPI), and Performance and Independence (PI). The ERA5 and GPCP precipitation datasets were used as the references for comparison. Then, reliable metrics will be used to determine the weighting factor. The results found that three metrics namely Taylor, SS, and Tian were more reliable than the other two metrics (CPI and PI). Spatially, the weighted ensemble mean based on a random method was superior to other ensemble mean methods and individual models. We found that the CNRM_a and GFDL_b models were spatially performed best. In contrast, most the ensemble means was temporally less performed compared to the individual model. Our findings suggested that by removal of low performance models will significantly influence on the overall ensemble model performance. Further, the research may provide valuable considerations of climate models selection for climate projection assessments, especially in the Southeast Asia region.
RESPON MODEL HBV DAN MODEL TANGKI TERHADAP ESTIMASI DEBIT ALIRAN DI DAS BOGOWONTO, JAWA TENGAH Fitri Yusti Andini; Bambang Dwi Dasanto; I Putu Santikayasa
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i2.830

Abstract

 The scarcity of discharge data compared to rainfall data have driven the development of the rainfall-runoff model, such as the HBV and Tank models. This research aims to apply the rainfall-runoff model in the Bogowonto watershed and to assess the model outputs. The research consisted of two main stages: 1) model calibration and validation; 2) model evaluation which assesses the model performance based on the Nash-Sutcliffe Efficiency (NSE) index and the coefficient of determination (R2). The results showed that the pattern of the simulation discharge was in accordance with the observed discharge pattern; indicating performance of both models was good (NSE > 0.7 and R2 > 0.65). However, the performance of both models in the daily simulation, particularly at the beginning of the simulation period, is still not satisfactory as the simulated discharge does not match the observed discharge. In the next simulation period, the discharge of the model results were in accordance with the observed discharge; this means the performance of the model was better. In the monthly simulation, the performance of both models is not yet satisfactory during the wet season, but it is good during the dry season. Based on the results of the daily and monthly simulations, both models demonstrate good performance under low precipitation conditions, but their performance declines under high precipitation conditionsKeywords:       Bogowonto watershed, HBV, rainfall-runoff model, simulation, tank 
Pemanfaatan Rumput Gajah dan Jerami Padi dalam Pembuatan Pakan Alternatif di Desa Jerukwudel, Gunungkidul Iinuma, Rikiya; Izzatiddieni, Nabila Nurul; Zahra, Baitia; Haidir, Muhamad Ibnu; Ferusza, Adinda Cahaya; Assalamia, Muqita Putrika; Pramudya, Ravi Mahesa; Dasanto, Bambang Dwi
Jurnal Pusat Inovasi Masyarakat Vol. 6 No. Khusus: Desember 2024
Publisher : Direktorat Pengembangan Masyarakat Agromaritim, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpim.6.Khusus.1-13

Abstract

Farmers in Jerukwudel Village, Gunungkidul, face challenges related to the limited availability of green fodder and the lack of nutritional supplements in their feed. To address these issues, silage and ammoniated feed have been proposed as alternative solutions that not only serve as reserve feed during the dry season but also provide additional nutrition for livestock. This community service program aims to enhance the interest of farmers and livestock keepers in Jerukwudel Village in utilizing and developing agricultural waste as alternative feed during the dry season. The methods implemented in this program include preparation and execution of material dissemination, training, feed provision, monitoring, and evaluation. The innovation in alternative feed production in Jerukwudel Village consists of two types of feed: silage and ammoniated feed. The production of these feed types had not previously been attempted in the village. Results from the socialization indicate that the community in Jerukwudel Village actively participated and engaged in a two-way interaction. The community also gained an understanding of the materials and composition used in feed production, as evidenced by a 21% increase in understanding based on pre-tests and post-tests. The fermentation process for silage and ammoniated feed took 21 days, yielding good results indicated by changes in texture, color, and aroma. These changes signified that the production of alternative livestock feed was successful and ready to be distributed to the local livestock. The alternative feed distribution activities demonstrated positive responses, with the livestock showing a preference for the taste and aroma of these feed types.
Co-Authors - Sutikno . Risyanto Akhmad Faqih Alfia Surya Rahmanda Andria Anria Antonio Alberto Apip Apip Apip, Apip Ardhasena Sopaheluwakan Ardhasena Sopaheluwakan Arnida L. Latifah Assalamia, Muqita Putrika Bambang Pramudya Bambang Pramudya Citra Musafirah Isni Wahid Cut Azizah Edvin Aldrian Edvin Aldrian Eka Fibriantika Ferusza, Adinda Cahaya Fitri Yusti Andini Haidir, Muhamad Ibnu Hendarti Hendarti Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hutami Nur Saputri I Putu Santikayasa Iinuma, Rikiya Isa Teguh Widodo Isnayulia Lestari Iwan Ridwansyah Izzatiddieni, Nabila Nurul Laksono Trisnantoro Lely Qodrita Avia Lisnawati Mamenun Mamenun Masitoh, Siti Misnawati Misnawati Muh. Taufik Nita Tarigan Orita Mega Delani P. Perdinan Pramudya, Ravi Mahesa Rahmat Hidayat Rias Sholihah Rini Hidayati Rizaldi Boer RR Mashita Fauzia Hannum Santikayasa, I Putu Sarif Robo Sinta Berlian Sipayung Siti Nurdhawata Sulistiyanti Sulistiyanti Suria Darma Tarigan Tugiyo Aminoto Unggul Handoko Unggul Handoko, Unggul Yonny Koesmaryono Yuli Suharnoto Yunus Subagyo Swarinoto Zahra, Baitia