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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

Author-ID : 953489

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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Determination of Extreme Hydrological Index using HBV Model Simulation Results (Case Study : Upper Ciliwung Watershed) Isnayulia Lestari; Bambang Dwi Dasanto
Agromet Vol. 33 No. 1 (2019): JUNE 2019
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

The study of climate change on hydrological response is a crucial as climate change impact will drive the change in hydrological regimes of river. Upper Ciliwung watershed is one of the critical rivers in Java Island, which has been affected by climate change. This study aims to: (i) simulate the discharge flow using the Hydrologiska Byrans Vattenbalansavdelning (HBV) model; (ii) simulate future flow using three general circulation models (GCM) namely Commonwealth Scientific and Industrial Research Organisation (CSIRO) Mk.3.6.0, Model for Interdisciplinary Research on Climate version 5 (MIROC5), and Geophysical Fluid Dynamics Laboratory-Coupled Model generation 3 (GFDL-CM3); (iii) determine the changes of extreme hydrological index during historical period (2001-2015) and projected period (2031-2045). The historical year simulation and projections are used to determine eight hydrologic extreme indices for high flow and low flow. We calibrated the HBV model for two years (2001-2002) and validated it for two years (2003-2004). Our model performed well in discharge simulation as shown by the NSE values (0.66 for calibration and validation). Then we calculated the indices for each period used (historical and projected). To show the changes in hydrological regimes, we compare the indices between two periods. Changes in the index of the two periods tend to decrease in value on the index parameters that characterize the minimum extreme events. Hence, that it is possible in the projected period there will be extreme hydrological events in the form of drought.

Fire Danger on Jambi Peatland Indonesia based on Weather Research and Forecasting Model Lisnawati; Muh Taufik; Bambang Dwi Dasanto; Ardhasena Sopaheluwakan
Agromet Vol. 36 No. 1 (2022): JUNE 2022
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.36.1.1-10

Monitoring drought related to peat fire danger is becoming essentials due to the adverse impacts of peat fires. However, the current monitoring is mostly based on station data and has not yet covered all parts of peatlands. This research was carried out to initiate a spatial monitoring for peat fire, particularly in Jambi province. Our approach was simple by integrating Weather Research Forecasting (WRF) output with a drought-fire model. This research aims to: (i) calibrate rainfall, air temperature and soil moisture data from WRF output; and (ii) analyze temporal drought related to fire danger. A drought-fire model known as Peat Fire Vulnerability Index was applied with daily inputs of WRF output at 5km resolution, which were comprised of rainfall, air temperature, and soil moisture. The results showed that calibration reduced rainfall magnitude, and slightly increased the maximum air temperature and soil moisture. The calibration performance was good as shown by a very low percent bias (less than ±5%), and lower error (RMSE=16.5; MAE=9.5). Our analysis showed that drought triggered by El Niño in 2015 had escalated extreme fire danger class by 38% compared to normal year (2018). This has been confirmed by a low variation of proportion of extreme class during July-August 2015. The results suggested that integrating spatial global climate data will benefit to the improved drought-fire model by providing spatial data. The results are expected to be a reference on drought and peat fires mitigation action.

DAMPAK PERUBAHAN IKLIM TERHADAP KENAIKAN MUKA AIR LAUT DI WILAYAH PESISIR PANGANDARAN Bambang Dwi Dasanto; Sulistiyanti Sulistiyanti; Andria Anria; Rizaldi Boer
RISALAH KEBIJAKAN PERTANIAN DAN LINGKUNGAN Rumusan Kajian Strategis Bidang Pertanian dan Lingkungan Vol 9 No 2 (2022): Agustus
Publisher : Pusat Studi Pembangunan Pertanian dan Pedesaan (PSP3)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jkebijakan.v9i2.28039

Salah satu dampak paling signifikan dari perubahan iklim adalah kenaikan permukaan laut. Wilayah pesisir Pangandaran yang terletak di Selatan Jawa Samudra Hindia secara langsung memiliki risiko banjir lebih tinggi akibat kenaikan permukaan laut (SLR) dibandingkan dengan wilayah pesisir di Utara Jawa. Dampak langsung dari kenaikan muka laut, pada umumnya, diukur berdasarkan besarnya kerusakan fisik maupun kerugian ekonomi. Dalam kajian ini, kerusakan fisik dinotasikan sebagai persentase penyusutan atau perubahan penggunaan/tutupan lahan yang terpapar oleh banjir air laut. Kerugian ekonomi didekati dengan biaya kerusakan tiap jenis penggunaan lahan yang terpapar oleh banjir air laut. Satuan biaya (unit cost) tiap jenis penggunaan/tutupan lahan yang terusakkan dapat diperoleh dari hasil survei kuesioner, diskusi kelompok mendalam (focus group discussion, FGD), dan riset terdahulu. Hasil analisis SLR menunjukkan bahwa sementara penurunan tanah mencapai lebih dari 85 ha. Sementara itu, kerugian permanen akibat SLR pada 2025 dan 2050 hampir sama yaitu sekitar 40 ha, meskipun SLR meningkat lebih dari 0,24 meter menjadi 0,50 meter (skenario rendah) atau dari 0,30 meter hingga 0,64 meter (skenario tinggi). Ini bisa dimengerti karena elevasi Pantai Pangandaran cukup tinggi. Selain kerugian fisik, jenis kerugian lain yang disebabkan oleh SLR rusak atau hilang sebagian dari penggunaan lahan. Hasil analisis menunjukkan bahwa kerugian tertinggi terjadi di sektor permukiman dibandingkan dengan sektor pertanian, dan permukiman yang terkena dampak SLR lebih luas dengan meningkatnya periode proyeksi.

Penilaian Status Sumber Daya Air untuk Mitigasi Bencana Banjir dan Kekeringan: Studi Kasus Sub DAS Madiun: Assessment of Water Resource Status to Mitigate Flood and Drought Disasters: Case Study Madiun Sub Basin Alfia Surya Rahmanda; Bambang Dwi Dasanto
Jurnal Ilmu Tanah dan Lingkungan Vol 20 No 2 (2018): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Bengawan Solo river flow through into Madiun Sub Basin causes overflow river and drought. Moreover, relatively unstable water demand causes imbalance of water balance. Potency of flood and drought can be identified based on a water resources status in the studied area. To achieve target it, this research focused on three main stages; firstly, calculating water demand and water availability; secondly, analyzing water balance; and, thirdly, assessing water resources status. Water balance (supply-demand) method has been used to finish three aims or target from this research. Water supply was calculated based on volume of water availability, while total volume of water demand was counted from three water demand sectors, i.e. domestic, industrial, and agricultural. The results showed that the highest the water demand sourced from agricultural sector; meanwhile, the lowest the water demand was from domestic sector. Based on water balance analysis, Madiun Sub Basin has experienced a water deficit in 2012, 2014 and 2015. The most severe water deficit occured in 2012, because river discharge in the research area experienced decreasing during this year. The assessment of water resource status each month in Madiun Sub Basin is predominantly 3; this condition indicated that the region experienced high water stress.

Water allocation plan on part of Cisadane catchment in the district and city of Bogor Rias Sholihah; Bambang Dwi Dasanto; Hendarti Hendarti
JURNAL TEKNIK HIDRAULIK Vol 7, No 2 (2016): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

The growth population every year in Bogor caused changes in land use and increased water demand in the Cisadane river basin. The purpose of this study is to analyze the water demand DMI, water availability, water balance and and to evaluate the scope of services on the present and future. Therefore, it is necessary to manage the allocation of water demand by using software DSS (Decision Support System), RIBASIM (River Basin Simulation). The data used in this study are : rainfall, irrigation, population and schematization (Schema of water allocation). This study used base time fram from 2015 - 2030 which refers to the 6 Cis project. The results of the analysis of the model, indicating that the water demand is dominated by DMI (Domestic, Municipal and Industry). In general, the existing surface water sources in most Cisadane river basin can meet various needs, but, because of the priority water demand is for the people, the scope of services (coverage) is a major concern; in this case, lack of water services to the District and City of Bogor was found, as indicated in graphic water demand of DMI (domestic, municipal, industrial) with SIPA (license of water extraction) in 2015 and 2030. Based on the obtained information that is required for optimalised scope of services water supply for the district and the city of Bogor in 2030.

Perbandingan hidrograf banjir menggunakan beberapa metode perhitungan curah hujan efektif (studi kasus: Das Cisadane Hulu) Orita Mega Delani; Bambang Dwi Dasanto
JURNAL SUMBER DAYA AIR Vol 12, No 2 (2016)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Calculation of effective rainfall is an important step in hydrologic modelling. The used methods to calculate effective rainfall rarely observe watershed conditions on site. The objectives of the study is to determine the optimum method in calculating effective rainfall based on infiltration approach in Upper Cisadane Watershed and to analysis dominant characteristic of watershed on selected method. SCS-CN, Initial and Constant Rate Loss Method, and Green and Ampt Loss Method were the methods that used to estimate run off value in Upper Cisadane Watershed. The simulation was performed using HEC-HMS and tested using EF and RMSE on peak discharge and volume of hydrograph. The three events of peak discharge was chosen. Based on EF and RMSE test, Green and Ampt Loss Method model showed that simulated hydrograph was similar to measured hydrograph in Upper Cisadane Watershed with EF was 0.764 and RMSE was 5.93 m3/s. Based on the analysis, green and Ampt method is recommended to use on watershed with mountainous topographic and simillar on shape with Upper Cisadane Watershed.

Bogor Water Adequacy Status for 2009-2019 Nita Tarigan; Perdinan; Bambang Dwi Dasanto
Agromet Vol. 36 No. 1 (2022): JUNE 2022
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.36.1.42-50

Water adequacy becomes one of the global concerns as the trend of population growth continues to arise. The condition of water adequacy can be worse in some regions since it also relates to rainfall, which is greatly influenced by global climate change. Here we explore water adequacy at local scale especially in Bogor, Indonesia based on sectoral water demands. The study aims to analysis water adequacy for 2009-2019 based on a climatic water balance. Water supply-demand analysis was performed using water usage index (WUI) in which high WUI corresponds to high critical water balance. Our results showed there was a deceased trend for water supply in Bogor approximately 0.6% per year, whereas an increased trend was observed for water demand (1.7% per year). The main contributor for the increased demand was from domestic water demand by 48%. Generally, water adequacy in Bogor for the period analysis (2009 -2019) is still adequate, but a proper management of water resource will ensure water adequacy in the long run in response to population explosion and climate change.

ANALISIS POLA CURAH HUJAN INDONESIA BERBASIS LUARAN MODEL SIRKULASI GLOBAL (GCM) Sinta Berlian Sipayung; Lely Qodrita Avia; Bambang Dwi Dasanto; - Sutikno
Jurnal Sains Dirgantara Vol 4, No 2 (2007)
Publisher : Lembaga Penerbangan dan Antariksa Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.405 KB)

The analysis of rainfall pattern over indonesia based on the Global Circulation Model (GCM) such as the CGCM3.1(T47) and CSIRO Mk-3 for one hundred years observation (1900-2000) over three different types of Indonesia rainfall pattern has already been done. They are Lampung, Jakatra, and Kupang for the monsoon type, Ambon for the local type, and Padang and Solok for the equatorial type, repectively. Since the grid resolution of the GCM data is low relatively, we applied the Statistical Downscalling (SD) based on the Pricipal Component Regression (PCR). We found an a good agreement between both model with the rainfall in-situ measurement in between 0.6 up 0.76, except for Kupang. We found also that both model has a similar pattern comparing with the rainfall in-situ measurement. While, by applying the Principal Component Regression (PCR), we found an a good agreement also of both model than 65% with the total variability is about 90%.

Sifat Fisik Tanah dan Hubungannya dengan Kapasitas Infiltrasi DAS Tamiang Cut Azizah Jakfar; Hidayat Pawitan; Bambang Dwi Dasanto; Iwan Ridwansyah; Muh Taufik
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 43, No 2 (2019)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v43n2.2019.167-173

Abstrak. Daerah Aliran Sungai (DAS) Tamiang merupakan wilayah rawan bencana dan digolongkan sebagai DAS kritis di Indonesia karena rawan banjir. Mitigasi banjir memerlukan analisis kuantifikasi limpasan yang diprediksi dari curah hujan dikurangi kapasitas infiltrasi. Penelitian ini bertujuan untuk mengetahui distribusi parameter fisik tanah dan hubungannya dengan kapasitas infiltrasi DAS Tamiang. Parameter fisik tanah yang dianalisis adalah tekstur tanah, berat jenis, kadar air, permeabilitas dan porositas. Hasil penelitian menunjukkan tekstur tanah didominasi clay sehingga Hydrologic Soil Grups (HSG) termasuk dalam kapasitas infiltrasi sedang, berat jenis tanah 0,9-1,5 g cm-3, nilai kadar air pada musim kemarau 20-78 % (volume), nilai permeabilitas termasuk kategori sedang dan agak cepat (3-8 cm jam-1), dan nilai porositas 44-68%. Distribusi parameter fisik tanah menunjukkan kualitas yang kurang baik untuk kapasitas infiltrasi DAS Tamiang. Hasil penelitian dapat digunakan pada perencanaan pengelolaan sumberdaya air yang memerlukan data tanah untuk penelitian terkait. Abstract. The Tamiang River Basin is one of a disaster-prone and considered as a critical area in Indonesia due to vulnerability to flood. Flood mitigation requires an analysis of runoff quantification derived from the difference between rainfall and infiltration capacity. This study aimed to determine the distribution of soil physical parameters and their relationship to the infiltration capacity of the Tamiang watershed. Soil physical parameters analyzed were soil texture, bulk density, moisture content, permeability and porosity. The results showed the texture of the soil was predominantly clay so that the Hydrologic Soil Grups (HSG) was included in the medium infiltration capacity group, soil bulk density was 0.9-1.5 g cm-3, water content in the dry season was 20-78% (by volume), permeability belonged to medium and fairly fast categories (3-8 cm hour-1), and the porosity is was 44-68%. The distribution of soil physical parameters indicate somewhat poor infiltration capacity of the Tamiang watershed. The results of this study can be used in water resources management planning that requires soil data for related research

Evaluasi Curah Hujan TRMM Menggunakan Pendekatan Koreksi Bias Statistik Bambang Dwi Dasanto; Rizaldi Boer; Bambang Pramudya; Yuli Suharnoto
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 38, No 1 (2014)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v38n1.2014.15-24

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

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