Article
Engineering, Civil
Ibrahim Halil Deger, Musa Esit, Mehmet Ishak Yuce
Summary: This study examines the drought characteristics in the Euphrates Basin using the Streamflow Drought Index (SDI) and monthly streamflow data from 36 stations. The analysis considers 3- and 6-month time scales, and utilizes Mann-Kendall's rank correlation coefficient to assess the relationship between drought severity and duration. The study also models the marginal distributions of severity and duration using six different distributions and evaluates copula models for joint return periods. Results show that different parts of the basin have varying levels of drought risk for different return periods, and the Gumbel copula performs the best in modeling joint return periods.
WATER RESOURCES MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Elnaz Ghabelnezam, Raoof Mostafazadeh, Zeinab Hazbavi, Guangwei Huang
Summary: This study analyzed the hydrological drought in different return periods in rivers of the Ardabil Province, Iran. The results showed that most study stations experienced mild (-1 <= SDI < 0) and moderate (-1.5 <= SDI < -1) drought severity in the study area. The findings can be used as a screening tool for the conservation and management of watershed resources.
Article
Environmental Sciences
Jiefeng Wu, Huaxia Yao, Guoqing Wang
Summary: This study explored the differences in the propagation characteristics of hydrological drought (HD) identified by fixed and variable drought thresholds based on long-term monthly streamflow data. The results showed that both methods could effectively describe the HD propagation patterns. However, the timing and intensity of HD within a year were significantly different between the two methods due to their different conceptual backgrounds. The months identified by the variable drought threshold method were evenly distributed throughout the year, while the months identified by the fixed drought threshold method were mainly concentrated in the dry season. The findings suggest the need for more methods to monitor and predict HD and to reveal the driving mechanisms behind its propagation.
Article
Environmental Sciences
Anne F. Van Loon, Sally Rangecroft, Gemma Coxon, Micha Werner, Niko Wanders, Giuliano Di Baldassarre, Erik Tijdeman, Marianne Bosman, Tom Gleeson, Alexandra Nauditt, Amir Aghakouchak, Jose Agustin Brena-Naranjo, Omar Cenobio-Cruz, Alexandre Cunha Costa, Miriam Fendekova, Graham Jewitt, Daniel G. Kingston, Jessie Loft, Sarah M. Mager, Iman Mallakpour, Ilyas Masih, Hector Maureira-Cortes, Elena Toth, Pieter Van Oel, Floris Van Ogtrop, Koen Verbist, Jean-Philippe Vidal, Li Wen, Meixiu Yu, Xing Yuan, Miao Zhang, Henny A. J. Van Lanen
Summary: Human activities both aggravate and alleviate streamflow drought, with water abstraction being the dominant aggravating factor and water transfers effectively reducing drought. Reservoir releases can alleviate drought in dry season but change flow seasonality. Land use has a smaller impact, with both positive and negative effects observed.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Bowen Zhu, Xianhong Xie, Yibing Wang, Xuehua Zhao
Summary: High-resolution hydrological modeling is crucial for detecting extreme hydrological events and understanding fundamental terrestrial processes. However, current hydrological modeling studies mostly use relatively coarse resolutions which cannot address fine-scale flooding or drought issues. In this study, a continental-scale high-resolution hydrological modeling framework was used to detect extreme hydrological event occurrences in China. The results showed that the developed model provided more detailed information than coarser resolution models, capturing the timing, duration, and spatial extent of extreme hydrologic events. The high-resolution model integrated with remote sensing products can be valuable in understanding the occurrence and water resource security of continental-scale extreme hydrological events.
Article
Meteorology & Atmospheric Sciences
Jiefeng Wu, Iman Mallakpour, Xing Yuan, Huaxia Yao, Gaoxu Wang, Xiaohong Chen
Summary: Understanding the influence of false recovery (FR) and false intensification (FI) on hydrological drought is crucial for early detection and tracking. A numerical algorithm was designed to assess the roles of FR and FI, showing that they significantly impact drought severity and recovery. Considering these factors improves tracking effectiveness by decreasing average relative error and increasing coefficient of determination and efficiency coefficients.
WEATHER AND CLIMATE EXTREMES
(2022)
Article
Engineering, Civil
Miao Tang, Linguo Yuan, Zhongshan Jiang, Xinghai Yang, Changhai Li, Wanchun Liu
Summary: In order to accurately characterize short-term and long-term droughts and understand drought propagation mechanisms, it is necessary to determine the multiscale features of drought extremes. This study estimates terrestrial water storage changes (TWSC) using Global Navigation Satellite System (GNSS) data and develops a Multiscale GNSS-based Drought Index (MGDI) to characterize hydrological droughts in Brazil. The MGDI is similar to other multiscale drought indices and has a longer response time to meteorological variables. The spatial distribution of MGDI-derived drought frequency reveals that hydrological droughts are most frequent in northeastern Brazil and near the Parana River Basin.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Qi Zhang, Chiyuan Miao, Xiaoying Guo, Jiaojiao Gou, Ting Su
Summary: Understanding the impact of human activities on drought propagation is crucial for developing mitigation strategies and predicting hydrological drought. This study examined the spatiotemporal characteristics of drought propagation in the Yellow River Basin and found that human activities have reduced hydrological drought events and shortened the propagation time.
JOURNAL OF HYDROLOGY
(2023)
Article
Agronomy
Miguel Angel Valenzuela-Mahecha, Manuel Pulido-Velazquez, Hector Macian-Sorribes
Summary: Water scarcity is a growing problem in Mediterranean regions, particularly for irrigated agriculture. This study proposes a new index-based drought insurance scheme for an irrigation district in Spain, which was evaluated using various options and risk-reducing evaluation methods. The results show that specialized insurance, combined with early-bird contracts and trigger mechanisms, can help fill the gap in traditional insurance schemes and provide additional coverage for farmers under drought and water scarcity conditions.
Article
Environmental Sciences
Y. Quilfen, J. Shutler, J-F Piolle, E. Autret
Summary: Anthropogenic climate change is predicted to have significant impacts on the marine ecosystems of the Eastern Boundary Upwelling Systems (EBUS), particularly through ocean acidification and changes in upwelling dynamics. A study focusing on the California Current Upwelling System (CCUS) showed an increase in upwelling-favorable winds, affecting seasonal upwelling transport. The observed changes in wind trends are consistent with trends in water chlorophyll-a, CO2 partial pressure, and pH analysis, highlighting the importance of these changes for modulating the carbonate system within the CCUS.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Water Resources
Giulia Bruno, Francesco Avanzi, Simone Gabellani, Luca Ferraris, Edoardo Cremonese, Marta Galvagno, Christian Massari
Summary: Subsurface storage changes play a key role in drought propagation and recovery. Depletion of storage attenuates hydrological drought compared to meteorological drought, and storage recovery time is similar to discharge recovery time while longer for evapotranspiration recovery. These findings are important for water managers to understand surface- and ground-water availability in a changing climate.
ADVANCES IN WATER RESOURCES
(2022)
Article
Environmental Sciences
Te Zhang, Xiaoling Su, Gengxi Zhang, Haijiang Wu, Guanzhi Wang, Jiangdong Chu
Summary: This study quantifies the impacts of human activities on the propagation of meteorological drought to hydrological drought using an effective framework. The results show that human activities significantly disturb hydrological drought variations and propagation characteristics. The thresholds for triggering different levels of hydrological drought generally become larger with changing rates, but smaller in spring and winter. The study provides important insights for drought preparedness and adaptation strategies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Augusto Getirana, Sujay Kumar, Goutam Konapala, Wanshu Nie, Kim Locke, Bryant Loomis, Charon Birkett, Martina Ricko, Marc Simard
Summary: Satellite observations show that coastal Louisiana has experienced significant land loss in recent decades, which can be attributed to climate change and human activities. This study investigates the impacts of sea level rise and climate-induced hydrological change on flood risk in southern Louisiana and examines the effectiveness of water management through flood control structures. The findings reveal that climate-induced hydrological change has increased flood risk and population vulnerability, while water management interventions can mitigate these risks.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Civil
Alena G. Bevacqua, Pedro L. B. Chaffe, Vinicius B. P. Chagas, Amir AghaKouchak
Summary: This study characterized meteorological and hydrological droughts in 457 basins in Brazil using standardized indices, finding that hydrological droughts are usually more severe and have a longer recovery time compared to meteorological droughts. The most severe and long-lasting droughts are typically found in the driest regions or areas mainly impacted by human activities. Different approaches may result in slightly different propagation times.
JOURNAL OF HYDROLOGY
(2021)
Article
Ecology
Maurizio Mazzoleni, Vincent O. Odongo, Elena Mondino, Giuliano Di Baldassarre
Summary: The study introduces a system-dynamics model to simulate the interactions between water management, hydrological extremes, and society, with a case study in the Brisbane river basin. It tests the model's capability to explain observed phenomena and suggests that changes in flood and drought awareness can impact the emergence of multiple phenomena. Overall, the study indicates that water management strategies for specific hydrological extremes can influence the severity of opposite natural hazards.
ECOLOGY AND SOCIETY
(2021)
Article
Environmental Sciences
P. J. Ruess, M. Konar, N. Wanders, M. Bierkens
Summary: This study aims to estimate the irrigation water use (IWU) of different crops in the United States. By utilizing the PCR-GLOBWB 2 global hydrology model and incorporating data on agricultural production and climate, the study provides crop-specific estimates of irrigation water use for surface water withdrawals (SWW), total groundwater withdrawals (GWW), and nonrenewable groundwater depletion (GWD) from 2008 to 2020 at county spatial resolution. The results indicate that surface water withdrawals decreased by 20% over the study period, while both groundwater withdrawals and nonrenewable groundwater depletion increased by 3%.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Baoqing Zhang, Lei Tian, Chansheng He, Xiaogang He
Summary: Large-scale vegetation restoration has significant impacts on ecohydrological and hydrometeorological processes, leading to reduced streamflow and sediment yield due to enhanced canopy transpiration and soil conservation functions. However, the reduction in sediment yield is much higher than that of streamflow, mainly attributed to the redistribution of water and energy budgets caused by revegetation-induced local moisture recycling. It is important to consider the two-way feedbacks between revegetation and erosive precipitation in soil and water conservation planning.
WATER RESOURCES RESEARCH
(2023)
Article
Environmental Sciences
Mohammed Basheer, Victor Nechifor, Alvaro Calzadilla, Solomon Gebrechorkos, David Pritchard, Nathan Forsythe, Jose M. Gonzalez, Justin Sheffield, Hayley J. Fowler, Julien J. Harou
Summary: The uncertainties of climate change present challenges for managing the Nile River system, given the increasing demands for river-related services and political tensions among riparian countries. Cooperative adaptive management can help alleviate these stresses and tensions.
NATURE CLIMATE CHANGE
(2023)
Editorial Material
Environmental Sciences
Mohammed Basheer, Victor Nechifor, Alvaro Calzadilla, Solomon Gebrechorkos, David Pritchard, Nathan Forsythe, Jose M. Gonzalez, Justin Sheffield, Hayley J. Fowler, Julien J. Harou
Summary: There is high uncertainty regarding the climate change impacts on the economies and water-dependent sectors of the Nile region. Despite this, cooperative and adaptive management of the Grand Ethiopian Renaissance Dam can lead to economic and water management benefits for Ethiopia, Sudan, and Egypt.
NATURE CLIMATE CHANGE
(2023)
Article
Green & Sustainable Science & Technology
Jose M. Gonzalez, James E. Tomlinson, Eduardo A. Martinez Cesena, Mohammed Basheer, Emmanuel Obuobie, Philip T. Padi, Salifu Addo, Rasheed Baisie, Mikiyas Etichia, Anthony Hurford, Andrea Bottacin-Busolin, John Matthews, James Dalton, D. Mark Smith, Justin Sheffield, Mathaios Panteli, Julien J. Harou
Summary: A multi-objective design framework assisted by artificial intelligence is used in Ghana to explore optimized management and investment strategies for balancing hydropower, bioenergy, solar and wind energies, and their impacts. The development of renewable energy systems and improved operation play a crucial role in mitigating climate change. However, relying solely on hydropower integration to counterbalance intermittent renewables can have negative effects on aquatic ecosystems and increase water conflicts across sectors, highlighting the need for diversified investment strategies.
NATURE SUSTAINABILITY
(2023)
Article
Water Resources
Mengru Zhang, Xiaoli Yang, Ming Pan, Linyan Zhang, Xiuqin Fang, Justin Sheffield
Summary: The characteristics of meteorological drought in different river basins in China vary spatially and temporally, and this variation is also reflected in the influence of meteorological drought in different watersheds. This study investigates the future meteorological drought risk under different emission scenarios and explores the impact of precipitation and temperature on meteorological drought in different basins in China. The study also considers the uncertainty associated with CMIP6 in different watersheds. The results show a decreasing trend in the frequency of meteorological drought events in the future, but an increase in drought intensity and duration. Precipitation plays a major role in meteorological drought, especially in the northeast and southeast basins of China.
HYDROLOGY RESEARCH
(2023)
Article
Engineering, Civil
Tomasz Janus, James Tomlinson, Daniela Anghileri, Justin Sheffield, Stefan Kollet, Julien J. Harou
Summary: This study investigates the impact of hydrologic-land feedbacks and a hydrologic-water management linkage on optimized land cover arrangements within a multiobjective land cover design framework. It integrates a spatially-distributed and physically-based hydrologic model with a network-based multi-sector water resources management model. Results show that trade-offs between water, food, energy, and environment objectives depend on land cover composition and spatial arrangement. The study demonstrates the added benefits of coupling distributed hydrologic models with water management simulation for multisector multicriteria land cover planning.
JOURNAL OF HYDROLOGY
(2023)
Article
Multidisciplinary Sciences
Xing Yuan, Yumiao Wang, Peng Ji, Peili Wu, Justin Sheffield, Jason A. Otkin
Summary: Flash droughts have become increasingly common worldwide, posing challenges to drought monitoring and prediction. The intensification of droughts has accelerated over subseasonal time scales, leading to a transition towards more flash droughts in 74% of global regions over the past 64 years. This transition is linked to amplified anomalies in evapotranspiration and precipitation deficit due to human-induced climate change. In the future, this transition is expected to expand to most land areas, with greater increases under higher-emission scenarios. These findings highlight the urgency of adapting to faster-onset droughts in a warmer future.
Article
Green & Sustainable Science & Technology
Ailish Craig, Craig Hutton, Laura A. A. Lewis, Frank B. B. Musa, Justin Sheffield
Summary: This study examines the association between typologies of social capital and household food security in Southern Malawi, with a focus on access to food. The findings show that bonding and bridging social capital are associated with better household access to food, while linking social capital is associated with lower access to food. The study also suggests that female-headed households prioritize linking social capital, while male-headed households prioritize bonding social capital.
SUSTAINABILITY SCIENCE
(2023)
Article
Engineering, Civil
Biao Long, Baoqing Zhang, Xiaogang He
Summary: This study systematically investigates the sensitivities of global drought and pluvial detection to the length of climate epoch using multiple standardized indices (SIs), and finds differences between SIs in event classification and the impact of climate epoch on event detection.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Catherine Tlotlo Kerapetse, Jean-Marie Kileshye Onema, Webster Gumindoga, Cosmo Ngongondo, Justin Sheffield
Summary: The understanding of groundwater recharge occurrence in drylands is essential for water resources management. This study used Remote Sensing and GIS techniques to identify potential groundwater recharge zones and predicted crop yield. The results showed changes in land cover and suggested the existence of water resources for food security in water-scarce drylands.
PHYSICS AND CHEMISTRY OF THE EARTH
(2023)
Article
Geography
Ailish Craig, Craig Hutton, Frank B. Musa, Justin Sheffield
Summary: From 2018 to 2020, 82% of Malawian's were classified as moderately or severely food insecure. The decline in social capital in sub-Saharan African countries raises questions about its effectiveness in alleviating hunger. Gender plays a role in both food security and social capital, but limited research has investigated the gender differences in social capital and food access.
JOURNAL OF RURAL STUDIES
(2023)
Article
Geosciences, Multidisciplinary
Jannis M. Hoch, Edwin H. Sutanudjaja, Niko Wanders, Rens L. P. H. van Beek, Marc F. P. Bierkens
Summary: This study presents the first application of PCR-GLOBWB at a hyper-resolution of 1 km over Europe. The model performs better in simulating discharge at hyper-resolution compared to coarser resolutions. However, the lack of available observations at hyper-resolution limits the assessment of other variables. Further validation efforts are needed.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Sigrid Jorgensen Bakke, Niko Wanders, Karin van der Wiel, Lena Merete Tallaksen
Summary: Wildfires are recurring natural hazards that have significant impacts on terrestrial ecosystems, the carbon cycle, climate, and society. This study used a data-driven machine learning approach to identify the dominant hydrometeorological factors influencing fire occurrence in Fennoscandia and produced spatially and temporally resolved fire danger probability maps. The results showed that shallow volumetric soil water anomaly, temperature, and deep volumetric soil water were the most important predictors of fire occurrence.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Sandra M. Hauswirth, Marc F. P. Bierkens, Vincent Beijk, Niko Wanders
Summary: This study explores the suitability of a hybrid forecasting framework that combines data-driven approaches and seasonal (re)forecasting information to predict hydrological variables. The results show that the hybrid framework provides accurate predictions for discharge and surface water levels, achieving a skillful prediction for the first lead month and extending up to 2-3 months for spring months.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
