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Below is an up-to-date list of scientific articles, international and national conferences involving myself or my laboratory. A PDF version of the publication list is also available here.
Peer review scientific articles
Peer review scientific articles
Calibration and validation of the AquaCrop model for simulating cotton growth under a semi-arid climate in Uzbekistan
Julien Boulange, Sherzod Nizamov, Aziz Nurbekov, Musulmon Ziyatov, Bakhtiyor Kamilov, Sirojiddin Nizamov, Abduaziz Abduvasikov, Gulnoza Khamdamova, and Hirozumi Watanabe
Agricultural Water Management, Vol. 310, 2025
Contribution of irrigation to the production of maize, wheat, and rice in the major global producing countries
Zhipin Ai, Julien Boulange, Xin Zhao, Fadong Li, Rashid Mahmood, Kiril Manevski, Yonghui, Yang, and Guirui, Yu
National Science Review, Vol. 11(11), 2024
How will climate change affect the sources of global irrigation water withdrawal?
Zhipin Ai, Xin Zhao, Julien Boulange, Fadong Li, Rashid Mahmood, Qiuying Zhang, Yonghui Yang, and Jun Xia
Science Bulletin, Vol. 69(21), 2024
Modelling pesticide concentrations in Japanese paddy fields using the RICEWQ model
Marta Colombo, Julien Boulange, W. Martin Williams, and Hirozumi Watanabe
Science of The Total Environment, Vol. 954, 2024
Impact of carbon pricing on mitigation potential in Chinese agriculture: A model-based multi-scenario analysis at provincial scale
Yizhi Deng, Jing-Yu Liu, Wei Xie, Xiaomuzi Liu, Jian Lv, Runsen Zhang, Wenchao Wu, Yong Geng, and Julien Boulange
Environmental Impact Assessment Review, Vol. 105, 2024
Quantitative evaluation of flood damage methodologies under a portfolio of adaptation scenarios
Julien Boulange, Yukiko Hirabayashi, Masahiro Tanoue, and Toshinori Yamada
Natural Hazards, Vol. 118, 2023
Applicability of the AquaCrop model for simulating winter wheat under a semi-arid climate in Uzbekistan
Nizamov Sherzod, Aziz Nurbekov, Muhammadjon Kosimov, Laziza Gafurova, Julien Boulange, and Hirozumi Watanabe
Journal of Arid Land Studies, Vol. 33(2), 2023
Delivering the latest global water resource simulation results to the public
Julien Boulange, Takeo Yoshida, Kazuya Nishina, Masaki Okada, and Naota Hanasaki
Climate Services, Vol. 30, 2023
Natural and anthropogenic forces on suspended sediment dynamics in Asian estuaries
Ali P. Yunus, Yoshifumi Masago, Julien Boulange, and Yasuaki Hijioka
Science of the Total Environment, Vol. 836, 2022
The timing of unprecedented hydrological drought under climate change
Yusuke Satoh, Kei Yoshimura, Yadu Pokhrel, Hyungjun Kim, Hideo Shiogama, Tokuta Yokohata, Naota Hanasaki, Yoshihide Wada, Peter Burek, Edward Byers, Hannes Müller Schmied, Dieter Gerten, Sebastian Ostberg, Simon Newland Gosling, Julien Boulange, and Taikan Oki
Nature Communications, Vol. 13, 2002
Sensitivity of subregional distribution of socioeconomic conditions to the global assessment of water scarcity
Prakat Modi, Naota Hanasaki, Dai Yamazaki, Julien Boulange, and Taikan Oki
Communications Earth & Environment, Vol. 3(1), 2022
Inference of Parameters for a Global Hydrological Model: Identifiability and Predictive Uncertainties of Climate‐Based Parameters
Takeo Yoshida, Naota Hanasaki, K. Nishina, Julien Boulange, Masako Okada, and P. A. Troch
Water Resources Research, 2022
Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT plus rice paddy module
Philip W. Gassman, Jaehak Jeong, Julien Boulange, Balaji Narasimhan, Tasuku Kato, Hiroaki Somura, Hirozumi Watanabe, Sadao Eguchi, Yuanlai Cui, Atsushi Sakaguchi,
International Journal of Agricultural and Biological Engineering, Vol. 15(1), 2022
The role of biochar in improving soil properties, water retention and potato yield in a Fluvisol under temperate monsoon climate
Kassu Tadesse Kassaye, Julien Boulange, Soboda Kurebito, Takeo Tokunari, Hirotaka Saito, and Hirozumi Watanabe
Soil Use and Management, Vol. 38(1), 2022
Validity of estimating flood and drought characteristics under equilibrium climates from transient simulations
Julien Boulange, Naota Hanasaki, Yusuke Satoh, Tokuta Yokohata, Hideo Shiogama, Peter Burek, Wim Thiery, Dieter Gerten, Hannes Mueller Schmied, Yoshihide Wada, Simon N. Gosling, Yadu Pokhrel and Niko Wanders
Environmental Research Letters, Vol. 16(10), 2021
A quantitative evaluation of the issue of drought definition: a source of disagreement in future drought assessments
Yusuke Satoh, Hideo Shiogama, Naota Hanasaki, Yadu Pokhrel, Julien Eric Stanislas Boulange, Peter Burek, Simon Newland Gosling, Manolis Grillakis, Aristeidis Koutroulis, Hannes Mueller Schmied, Wim Thiery and Tokuta Yokohata
Environmental Research Letters, 16(10), 2021
Understanding each other's models: an introduction and a standard representation of 16 global water models to support intercomparison, improvement, and communication
Camelia-Eliza Telteu, Hannes Mueller Schmied, Wim Thiery, Guoyong Leng, Peter Burek, Xingcai Liu, Julien Eric Stanislas Boulange, Lauren Seaby Andersen, Manolis Grillakis, Simon N. Gosling, Yusuke Satoh, Oldrich Rakovec, Tobias Stacke, Jinfeng Chang, Niko Wanders, Harsh Lovekumar Shah, Tim Trautmann, Ganquan Mao, Naota Hanasaki, Aristeidis Koutroulis, Yadu Pokhrel, Luis Samaniego, Yoshihide Wada, Vimal Mishra, Junguo Liu, Petra Döll, Fang Zhao, Anne Gädeke, Sam S. Rabin, and Florian Herz
Geoscientific Model Development, Vol. 14(6), 2021
Integrated Evaluation of Changing Water Resources in an Active Ecotourism Area: The Case of Puerto Princesa City, Palawan, Philippines
Mark Ace Dela Cruz, Shinichiro Nakamura, Naota Hanasaki, and Julien Boulange
Sustainability, Vol. 13(9), 2021
Globally observed trends in mean and extreme river flow attributed to climate change
Lukas Gudmundsson, Julien Boulange, Hong X. Do, Simon N. Gosling, Manolis G. Grillakis, Aristeidis G. Koutroulis, Michael Leonard, Junguo Liu, Hannes Muller Schmied, Lamprini Papadimitriou, Yadu Pokhrel, Sonia I. Seneviratne, Yusuke Satoh, Wim Thiery, Seth Westra, Xuebin Zhang, and Fang Zhao
Science, Vol. 371(6534), 2021
Global terrestrial water storage and drought severity under climate change
Yadu Pokhrel, Farshid Felfelani, Yusuke Satoh, Julien Boulange, Peter Burek, Anne Gaedeke, Dieter Gerten, Simon N. Gosling, Manolis Grillakis, Lukas Gudmundsson, Naota Hanasaki, Hyungjun Kim, Aristeidis Koutroulis, Junguo Liu, Lamprini Papadimitriou, Jacob Schewe, Hannes Müller Schmied, Tobias Stacke, Camelia-Eliza Telteu, Wim Thiery, Ted Veldkamp, Fang Zhao, and Yoshihide Wada
Nature Climate Change, Vol. 11(3), 2021
Soil water content and soil temperature modeling in a vadose zone of Andosol under temperate monsoon climate
Kassu Tadesse Kassaye, Julien Boulange, Le Hoang Tu, Hirotaka Saito, and Hirozumi Watanabe
Geoderma, Vol. 384, 2021
Role of dams in reducing global flood exposure under climate change
Julien Boulange, Naota Hanasaki, Dai Yamazaki, and Yadu Pokhrel
Nature Communications, Vol. 12(1), 2021
Predicting rice pesticide fate and transport following foliage application by an updated PCPF-1 model
Le Hoang Tu, Julien Boulange, Thai Khanh Phong, Dang Quoc Thuyet, Hirozumi Watanabe, and Kazuhiro Takagi
Journal of Environmental Management, Vol. 277, 2021
Historical and future changes in global flood magnitude - evidence from a model-observation investigation
Hong Xuan Do, Fang Zhao, Seth Westra, Michael Leonard, Lukas Gudmundsson, Julien Boulange, Jinfeng Chang, Philippe Ciais, Dieter Gerten, Simon N. Gosling, Hannes Müller Schmied, Tobias Stacke, Camelia-Eliza Telteu, and Yoshihide Wada
Hydrology and Earth System Sciences, Vol. 24(3), 2020
Monitoring soil water content for decision supporting in agricultural water management based on critical threshold values adopted for Andosol in the temperate monsoon climate
Kassu Tadesse Kassaye, Julien Boulange, Van Thinh Lam, Hirotaka Saito, and Hirozumi Watanabe
Agricultural Water Management, Vol. 229, 2020
A Spatially Explicit Assessment of Growing Water Stress in China From the Past to the Future
Xingcai Liu, Qiuhong Tang, Wenfeng Liu, Ted I. E. Veldkamp, Julien Boulange, Junguo Liu, Yoshihide Wada, Zhongwei Huang, and Hong Yang
Earth's Future, Vol. 7(9), 2019
Calibration of capacitance sensor for Andosol under field and laboratory conditions in the temperate monsoon climate
Kassu Tadesse Kassaye, Julien Boulange, Hirotaka Saito, and Hirozumi Watanabe
Soil & Tillage Research, Vol. 189, 2019
Portable rainfall simulator for plot-scale investigation of rainfall-runoff, and transport of sediment and pollutants
Julien Boulange, Farag Malhat, Piyanuch Jaikaew, Kazuki Nanko, and Hirozumi Watanabe
International Journal of Sediment Research, Vol. 34(1), 2019
Modeling of runoff water and runoff pesticide concentrations in upland bare soil using improved SPEC model
Lam Van Thinh, Ishwar Chandra Yadav, Julien Boulange, Dang Quoc Thuyet, and Hirozumi Watanabe
Journal of Pesticide Science, Vol. 44(3-4), 2019
Improvement and application of the PCPF-1@SWAT2012 model for predicting pesticide transport: a case study of the Sakura River watershed
Le Hoang Tu, Julien Boulange, Takashi Iwafune, Ishwar Chandra Yadav, and Hirozumi Watanabe
Pest Management Science, Vol. 74(11), 2018
Magnitude and robustness associated with the climate change impacts on global hydrological variables for transient and stabilized climate states
Boulange Julien, Hanasaki Naota, Veldkamp Ted, Schewe Jacob, and Shiogama Hideo
Environmental Research Letters, Vol. 13(6), 2018
PCPF-M model for simulating the fate andtransport of pesticides and their metabolites inrice paddy field
Julien Boulange, Farag Malhat, Dang Quoc Thuyet, and Hirozumi Watanabe
Pest Management Science, Vol. 73(12), 2017
Development and application of a dynamic in-river agrochemical fate and transport model for simulating behavior of rice herbicide in urbanizing catchment
Kei Kondo, Julien Boulange, Kazuaki Hiramatsu, Phong K. Thai, Tsuyoshi Inoue, and Hirozumi Watanabe
Agricultural Water Management, Vol. 193, 2017
A Markov Chain Monte Carlo technique for parameter estimation and inference in pesticide fate and transport modeling
Julien Boulange, Hirozumi Watanabe, and Shinpei Akai
Ecological Modelling, Vol. 360, 2017
Validation of QuEChERS based method for determination of fenitrothion residues in tomatoes by gas chromatography-flame photometric detector: Decline pattern and risk assessment
Farag Malhat, Julien Boulange, Ehab Abdelraheem, Osama Abd Allah, Rania Abd El-Hamid, and Shokr Abd El-Salam
Food Chemistry, Vol. 229, 2017
INVESTIGATION OF LEACHING PROCESSES OF HERBICIDES IN SOIL COLUMN SIMULATING BY HYDRUS-1D MODEL
Piyanuch Jaikaew, Farag Malhat, Le Hoang Tu, Julien Boulange, Charoen Jiraratchwaro, and Hirozumi Watanabe
Suranaree Journal of Science and Technology, Vol. 24(4), 2017
Simulating the fate and transport of nursery-box-applied pesticide in rice paddy fields
Julien Boulange, Dang Quoc Thuyet, Piyanuch Jaikaew, and Hirozumi Watanabe
Pest Management Science, Vol. 72(6), 2016
Development and validation of the SPEC model for simulating the fate and transport of pesticide applied to Japanese upland agricultural soil
Julien Boulange, Dang Quoc Thuyet, Piyanuch Jaikaew, Satoru Ishihara, and Hitozumi Watanabe
Journal of Pesticide Science, Vol. 41(3-4), 2016
Potential impacts of seasonal variation on atrazine and metolachlor persistence in andisol soil
Piyanuch Jaikaew, Julien Boulange, Dang Quoc Thuyet, Farag Malhat, Satoru Ishihara, and Hirozumi Watanabe
Environmental Monitoring and Assessment, Vol. 187(12), 2015
Effect of Rice Husk Gasification Residue Application on Herbicide Behavior in Micro Paddy Lysimeter
Junghun Ok, Sok Pisith, Hirozumi Watanabe, Dang Quoc Thuyet, Julien Boulange, and Kazuhiro Takagi
Bulletin of Environmental Contamination and Toxicology, Vol. 94(6), 2015
Development and validation of a basin scale model PCPF-1@SWAT for simulating fate and transport of rice pesticides
Julien Boulange, Hirozumi Watanabe, Keiya Inao, Takashi Iwafune, Minghua Zhang, Yuzhou Luo, and Jeff Arnold
Journal of Hydrology, Vol. 517, 2014
Behavior of Butachlor and Pyrazosulfuron-ethyl in Paddy Water Using Micro Paddy Lysimeters under Different Temperature Conditions in Spring and Summer
Junghun Ok, Nguyen Hai Doan, Hirozumi Watanabe, Dang Quoc Thuyet, and Julien Boulange
Bulletin of Environmental Contamination and Toxicology, Vol. 89(2), 2012
Fate and transport of bensulfuron-methyl and imazosulfuron in paddy fields: experiments and model simulation
Kazuhiro Takagi, Ferdinand F. Fajardo, Masumi Ishizaka, Thai Khanh Phong, Hirozumi Watanabe, and Julien Boulange
Paddy and Water Environment, Vol. 10(2), 2012
Analysis of parameter uncertainty and sensitivity in PCPF-1 modeling for predicting concentrations of rice herbicides
Julien Boulange, Kei Kondo, Thai Khanh Phong, and Hirozumi Watanabe
Journal of Pesticide Science, Vol. 37(4),2012
Probabilistic assessment of herbicide runoff from Japanese rice paddies: The effects of local meteorological conditions and site-specific water management
Kei Kondo, Julien Boulange, Thai Khanh Phong, Kazuaki Hiramatsu, Tsuyoshi Inoue, and Hirozumi Watanabe
Journal of Pesticide Science, Vol. 37(4), 2012
Books
Books
Modeling Approaches for Pesticide Exposure Assessment in Rice Paddies
Yuzhou Luo, W. Martin Williams, Dirk F. Young, Hirozumi Watanabe, Julien Boulange, Amy M. Ritter, and Thai Khanh Phong
Pesticide Mitigations Strategies for Surface Water Quality, 2011
International and domestic conferences (only recent)
International and domestic conferences (only recent)
Distribution matters: on the sensitivity of gridded data for population and economic condition to global water scarcity assessment
Taikan Oki, Prakat Modi, Naota Hanasaki, Dai Yamazaki, and Julien Boulange
International Union of Geodesy and Geophysics (IUGG), 2023/07/14
Residual flood damage assessment: moving beyond traditional method
Julien Boulange, Yukiko Hirabayashi, Masahiro Tanoue, and Toshinori Yamada
International Union of Geodesy and Geophysics (IUGG), 2023/07/13
Assessing the capability of AquaCrop to simulate winter wheat and cotton production under semi-arid climate in Uzbekistan
Julien Boulange, Sherzod Nizamov, and Hirozumi Watanabe
JpGU, 2023/05/24
Data Assimilation for Estimating Human-Regulated River Flow Dynamics
Menaka Revel, Julien Boulange, Dai Yamazaki, and Naota Hanasaki
JpGU, 2023/05/23
Investigating the fate and transport of herbicide residues in andisol soil under natural field conditions during summer and winter seasons
Piyanuch Jaikaew, Julien Boulange, Dang Quoc Thuye, Farag Malha, Satoru Ishihara, and Hirozumi Watanabe
The 1st International Conference on Environment, Livelihood, and Services: Environment for Life, 2015/11/02
Study showcase 1: Global terrestrial water storage and drought severity under climate change
Study showcase 1: Global terrestrial water storage and drought severity under climate change
Previous studies have extensively documented the historical variations of the terrestrial water storage (TWS), as it provide a good approximation of water availability. In contrast, the future evolution of TWS and its linkage to droughts remains relatively unexplored. This study quantify the impacts of climate change on TWS using an ensemble of hydrological simulations and then determine the implications on future droughts, using the TWS drought severity index.
Result indicate that climate change is projected to reduce TWS in two-third of global land area. The particularly sharp decrease in TWS in the southern hemisphere are consistent across the 27 ensemble simulations. The declines in TWS translate to substantial increase in the occurrence and frequency of drought. By the late-21st century, the global land area and population in extreme-to exceptional TWS drought could more than double, each increasing from 3% during 1976-2005 to 7% and 8%, respectively.
This study highlight the importance of climate change mitigation to avoid adverse TWS impacts and increased droughts, and the need to improved water resource management and adaptation.
Study showcase 2: Role of dams in reducing global flood exposure under climate change
Study showcase 2: Role of dams in reducing global flood exposure under climate change
Flood is amongst the costliest natural disasters. Globally, flood risk is projected to increase in the future, driven by climate change and population growth. We investigate the effect of climate change on future population flood exposure (keeping population distribution constant) while considering the role of dam in flood mitigation, previously unaccounted for. In our simulations, integrating dams reduced by, at most, approximately 20% the number of people globally exposed to historical once-in-100-year floods.
Currently, about half of major river systems worldwide are regulated by dams and more than 3,700 major dams are planned or under construction. Consequently, to realistically assess population exposure to present and future floods, current and future dam landscapes must be integrated into existing modeling framework.
Accounting for dams in river flood simulations, the number of people exposed to the historical once-in-100-year flood below dams were 7.2 and 13.4 million on average over 2006-2099 given a low and a medium-high greenhouse gas emission trajectory (RCP2.6 and RCP6.0, respectively). By the end of the 21st century, the populations exposed to flooding below dams decreased on average by 20.6% and 12.9% for the two trajectories compared to simulations not accounting for the flow regulations produced by dams.
Study showcase 3: Magnitude and robustness associated with the climate change impacts on global hydrological variables for transient and stabilized climate states
Study showcase 3: Magnitude and robustness associated with the climate change impacts on global hydrological variables for transient and stabilized climate states
The Paris agreement sets a target of limiting global temperature well below 2.0 °C above pre-industrial levels and of pursuing efforts to limit the temperature increase to 1.5 °C above these levels. Consequently, recent studies have focused on assessing the impacts of climate change at specific global temperature targets (i.e. +1.5 °C, +2.0 °C). By far, the most common approach to identify future (typically 30-years long) periods corresponding to certain level of global warming is to use a time sampling methodology. One limitation of these studies is that the climate considered for these 30-years periods is transient, characterized by a steady increase in global mean temperature with time. In contrast, the Inter-Sectoral Impacts Model Intercomparison Project Phase 2b (ISIMIP2b) provides trend-preserving bias-corrected climate model datasets over six centuries for 4 global climate models (GCMs) which therefore can be used to evaluate the potential effects of using time-slice periods from stabilized climate rather than time-slice periods from transient climate on climate change impacts
In this study, one of the four leading global hydrological models, H08 was used to predict, globally, the impacts of climate change on the hydrological cycle. The outputs of the Linux-based model were analyzed using FORTRAN and the R software by computing deviation from the pre-industrial era, and the signal-to-noise (SN) ratios for five hydrological variables, over 20 regions comprising the global land area. Surprisingly, our study revealed that while significant differences could be observed between the impacts of climate change for the transient and stabilized climates, the differences were rather small.
For most regions, relying on the transient climate slightly but significantly underestimated the impacts of climate change relative to pre-industrial conditions. For global mean temperature increase up to 2.6 °C (the maximum tested in this study), transient time slices may be considered a good approximation of the stabilized climate, for large-scale hydrological studies and many regions and variables, as: (1) impacts of climate change were only significantly different from those of the stabilized climate for a small fraction of the globe, and (2) these differences were not indicated to alter the robustness of the impacts of climate change.
Our results are of importance for all previous studies that attempted to assess the effect of climate change. Our publication currently has over 168 downloads and is expected to be cited by the IPCC special report. This study is currently being extended by considering the change in extreme events.
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