Article
Geosciences, Multidisciplinary
Jinxia Zhang, Shanshan Wang, Jianping Huang, Yongli He, Yu Ren
Summary: The amount, frequency, and intensity of extreme precipitation in Xinjiang have increased dramatically due to the wetting trend in Northwest China. The long-term trends in the precipitation-recycling process have been largely unexplored. A study using a dynamic recycling model and MERRA2 reanalysis found that the mean recycling ratio for extreme precipitation in Xinjiang is 42.3% with a growth rate of 2.3% per decade during 1982-2019. The increasing trend of extreme precipitation is almost equally attributed to increased recycling precipitation (49%) and external precipitation (51%). The Tianshan Mountains region and Kunlun Mountains region in Xinjiang exhibit variations in the water cycle, with the external cycle predominating the increased extreme precipitation in the Tianshan Mountains region and the recycling process mainly influencing the increase in the Kunlun Mountains region due to enhanced evapotranspiration.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Lei Tian, Baoqing Zhang, Shuoyu Chen, Xuejin Wang, Xiaogang Ma, Baotian Pan
Summary: Afforestation is an effective method to control soil erosion, but it consumes water resources and has feedback effects on local precipitation. The world's largest afforestation program in China has increased precipitation and strengthened the atmospheric water cycle on the Loess Plateau. Afforestation has created a more humid atmosphere, enhanced the soil moisture-vegetation-precipitation feedback, and favored precipitation generation.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Richard P. Allan
Summary: Climate warming is intensifying the global water cycle, leading to changes in the rate of fresh water flux between the atmosphere and the surface. Monitoring and understanding the changes in precipitation and evaporation patterns across the globe are crucial due to their impact on societies and ecosystems. This study analyzes observation-based datasets and climate model experiments to diagnose the changes in annual maximum and minimum precipitation minus evaporation (P-E) globally over land and ocean from 1950 to 2100. The findings show increases in P-E maximum and decreases in P-E minimum, indicating a more variable and extreme water cycle in the future.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Martha A. Scholl, Maoya Bassiouni, Angel J. Torres-Sanchez
Summary: This study found that forest cover plays a crucial role in mountain hydrometeorology and cloud formation. Natural experiments revealed interactions between living forest and hydroclimatic processes, as well as the impact of forest disturbances on local meteorology.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Studies
Yuan Guohua, Ayman Elshkaki, Xi Xiao
Summary: The demand for nickel is expected to increase and stabilize between 2034 and 2040 in all scenarios analyzed in China. Secondary supply could cover 51-65% of demand by 2050 if scrap import is restricted, and up to 85% without restrictions. The average annual energy consumption associated with nickel production constitutes 2.6-6.9% of total electricity consumption in China in 2018.
Article
Multidisciplinary Sciences
Evaldo De Lira Azevedo, Romeu Nobrega Alves Romulo, Thelma Lucia Pereira Dias, Erica Luana Ferreira Alvaro, Jose Etham De Lucena Barbosa, Joseline Molozzi
Summary: This study examined the relationship between local community perception of reservoir conservation and actual conservation status, finding correlations with water quality, biological diversity, human activities, etc. Therefore, it is crucial to incorporate local environmental perception into management programs and ecosystem conservation efforts.
Article
Biodiversity Conservation
Yan Li, Ru Xu, Kun Yang, Yanxu Liu, Shuai Wang, Sha Zhou, Zhao Yang, Xiaoming Feng, Chunyang He, Zhengjie Xu, Wenwu Zhao
Summary: The ecosystems of the Tibetan Plateau play a vital role in regulating precipitation, with grasslands making the largest contribution. Over the past two decades, increased evapotranspiration in the Tibetan Plateau has led to an increase in precipitation contribution to both the plateau and downwind regions. This study provides quantitative evidence of the precipitation regulation services offered by the Tibetan Plateau ecosystems.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Engineering, Petroleum
Lee Yeh Seng, Berna Hascakir
Summary: This study investigates the effects of polar fractions of heavy oil on the surfactant-steamflooding process, highlighting the importance of interactions between asphaltenes and surfactants in enhancing oil recovery. The research reveals that a longer hydrocarbon tail in surfactants leads to higher cumulative oil recovery, indicating the significance of intermolecular forces in the performance of surfactant-steam processes in heavy oil reservoirs.
Article
Environmental Sciences
Seokhyeon Kim, Ashish Sharma, Conrad Wasko, Rory Nathan
Summary: This study investigates the relationship between extreme precipitation (EP) and precipitable water (W) at a global scale. The results show that W is positively correlated with surface temperature, especially in tropical land regions. The influence of W on EP decreases as the duration of EP becomes longer, and the contrast in the W-EP relationship between the tropics and nontropics becomes more pronounced.
Article
Multidisciplinary Sciences
Wesley P. Scott, Sergio Contreras, Gabriel J. Bowen, T. Elliott Arnold, Ramon Bustamante-Ortega, Josef P. Werne
Summary: Global warming is expected to impact regional precipitation, such as the projected warmer and drier climate in central-south Chile due to anthropogenic warming. Stable isotope compositions of precipitation provide valuable information about moisture sources and history, but data from remote areas like Chile are limited, hindering accurate regional precipitation modeling.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Inigo Ricalde, Sebastian Vicuna, Oscar Melo, James E. Tomlinson, Julien J. Harou, Greg Characklis
Summary: Climate change poses challenges to global drinking water providers and regulatory frameworks, requiring adjustments in regulations and new investments. According to the study, under uncertainty in future climate scenarios, nonstructural adaptation measures can be used to reduce potential negative impacts.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Francesco Marra, Moshe Armon, Ori Adam, Davide Zoccatelli, Osama Gazal, Chaim Garfinkel, Dorita Rostkier-Edelstein, Uri Dayan, Yehouda Enzel, Efrat Morin
Summary: Observational constraints can be used to predict rare extreme precipitation events, improving the predictability of local extreme conditions. This approach does not rely on improvements in climate models at regional and local scales.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Tyler S. Harrington, Jesse Nusbaumer, Christopher B. Skinner
Summary: This study examines the contribution of land surface evapotranspiration to precipitation in North America. It finds that a large portion of summertime precipitation in the region is sourced from land surface evapotranspiration, with over 50% originating from transpiration alone. Precipitation in the southern and western regions is mainly influenced by local moisture recycling, while in the northern and eastern regions, it is dominated by remotely sourced moisture, particularly from transpiration. The findings provide key insights for drought prediction and water resource management.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Guanxia Xie, Kejia Chu
Summary: We examine the impact of precipitation risks on corporate water consumption decisions in mainland China using daily precipitation data and industrial firm water use data from 1998 to 2013. Our analysis shows that precipitation shocks have a significant effect on firms' water usage, with higher precipitation risk leading to lower water consumption. We find that this water-saving effect is mainly driven by extreme drought. City-level data further confirms that precipitation is a key driver of corporate water-saving measures, particularly in areas sensitive to precipitation and high-water-consumption industries. Our results also suggest that firms achieve water-saving effects through technological improvement, reduction of wastewater discharge, and scaling down investment and production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Meteorology & Atmospheric Sciences
Zhibo Li, Ying Sun, Tim Li, Wen Chen, Yihui Ding
Summary: Research shows that as global mean surface temperature increases, the South Asian summer monsoon circulation weakens almost linearly, while precipitation and precipitable water enhance quasi-linearly. Each additional degree of warming leads to the appearance of a double anticyclone along the tropical Indian Ocean, which is responsible for the weakening of the lower-level westerlies.
JOURNAL OF CLIMATE
(2021)
Article
Forestry
Don A. White, Francisco Balocchi-Contreras, Richard P. Silberstein, Pablo Ramirez de Arellano
FOREST ECOLOGY AND MANAGEMENT
(2020)
Article
Forestry
Francisco Balocchi, Neftali Flores, Daniel Neary, Don A. White, Richard Silberstein, Pablo Ramirez de Arellano
FOREST ECOLOGY AND MANAGEMENT
(2020)
Article
Water Resources
Francisco Balocchi, Don A. White, Richard P. Silberstein, Pablo Ramirez de Arellano
Summary: Forestal Arauco, a global manufacturer of forest products, conducted streamflow monitoring research in central-southern Chile between 35-39 degrees of latitude to improve understanding of the role of forest plantations on water balance. The research involved 10 small catchments with different forest types and utilized a combination of local rain gauges and data from the Chilean Directorate of Water for rainfall estimation.
HYDROLOGICAL PROCESSES
(2021)
Article
Water Resources
Francisco Balocchi, Neftali Flores, Jose Luis Arumi, Andres Iroume, Don A. White, Richard P. Silberstein, Pablo Ramirez de Arellano
Summary: Many communities in central Chile rely on water from small catchments in the coastal mountains, facing water security vulnerabilities in the summer dry season. The rate of decrease in stream flow after rain events is a key indicator of low flow risk, quantified using a recession coefficient (alpha). Differences in alpha values were observed between regions and forest types, especially in summer, highlighting the importance of understanding flow recession for water resources management in a changing climate.
HYDROLOGICAL PROCESSES
(2021)
Article
Forestry
Don A. White, Richard P. Silberstein, Francisco Balocchi-Contreras, Juan Jose Quiroga, Dean F. Meason, Joao H. N. Palma, Pablo Ramirez de Arellano
Summary: The comparison of water use between plantations and alternative land uses in central Chile is crucial for natural resource management. The study found that plantations have higher transpiration rates compared to local native forests, mainly due to the higher transpiration rates of plantation species.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Environmental Sciences
Neftali Flores, Rolando Rodriguez, Santiago Yepez, Victor Osores, Pedro Rau, Diego Rivera, Francisco Balocchi
Summary: The study found that the GR6J model performed the best in simulating flow, although all three models were capable of efficiently simulating flow in the catchments. The GR6J model showed the highest accuracy in simulating streamflow compared to the other models.
Review
Engineering, Civil
Francisco Balocchi, Mauricio Galleguillos, Diego Rivera, Alejandra Stehr, Jose Luis Arumi, Roberto Pizarro, Pablo Garcia-Chevesich, Andres Iroume, Juan J. Armesto, Pedro Herve-Fernandez, Carlos Oyarzun, Pilar Barria, Christian Little, Gabriel Mancilla, Santiago Yepez, Rolando Rodriguez, Don A. White, Richard P. Silberstein, Daniel G. Neary, Pablo Ramirez de Arellano
Summary: This paper reviews the hydrological processes in Chilean temperate forests, covering a range of natural and planted forests in diverse environmental settings. It highlights the importance of forested catchments for local communities, freshwater ecosystems, and downstream economic activities. The review identifies knowledge gaps and proposes future research directions to improve understanding of forest hydrology in Chile.
JOURNAL OF HYDROLOGY
(2023)
Article
Green & Sustainable Science & Technology
Roberto Pizarro, Pablo Garcia-Chevesich, Ben Ingram, Claudia Sanguesa, Juan Pino, Alfredo Ibanez, Romina Mendoza, Carlos Vallejos, Felipe Perez, Juan Pablo Flores, Mauricio Vera, Francisco Balocchi, Ramon Bustamante-Ortega, Gisella Martinez
Summary: The study compared the sediment production and transport in two basins with different hydrological regimens and plant covers. The basin with forest plantations showed a sustained decrease in sediment release over time, indicating the effectiveness of afforestation in sediment retention. However, further research is needed to support this theory as the two basins have different characteristics.
Article
Water Resources
Claudia Sanguesa, Roberto Pizarro, Ben Ingram, Francisco Balocchi, Pablo Garcia-Chevesich, Juan Pino, Alfredo Ibanez, Carlos Vallejos, Romina Mendoza, Alejandra Bernal, Rodrigo Valdes-Pineda, Felipe Perez
Summary: The availability of water in Chile has shown signs of decline in recent decades, which is problematic for the country's economy that relies on mining, forestry, and agriculture. The study found predominantly negative trends in water flows in both arid-semiarid and humid-subhumid zones, with the significance of these trends depending on the period analyzed.
Article
Water Resources
Claudia Sanguesa, Roberto Pizarro, Ben Ingram, Alfredo Ibanez, Diego Rivera, Pablo Garcia-Chevesich, Juan Pino, Felipe Perez, Francisco Balocchi, Francisco Pena
Summary: This study explored three methods (Kriging, Inverse Distance Weighting, and Storm Index) to estimate intensity-duration-frequency (IDF) curves in ungauged areas, and compared their performance using leave-one-out cross validation. Results showed that the Storm Index method performed the best among all ungauged locations, but it does not provide estimates of uncertainty.
Article
Ecology
Francisco Balocchi, Jose Luis Arumi, Andres Iroume
Summary: Forests cover 31% of the Earth's surface, playing an important role in the hydrological cycle and land protection. Chile proposes a research plan in forest hydrology to support evidence-based public policies, utilizing its capable scientific human resources.
Article
Engineering, Civil
Roberto Pizarro, Pablo Garcia-Chevesich, Francisco Balocchi, Juan Pino, Alfredo Ibanez, Claudia Sanguesa, Carlos Vallejos, Romina Mendoza, Ben Ingram, Jonathan O. Sharp
Summary: The study reveals different trends in peak flows in the Coquimbo region of Chile. While all series show a decrease in annual peak flows, the trend in monthly peak flows is more nuanced. Previous research suggests that these trends occur cyclically.
TECNOLOGIA Y CIENCIAS DEL AGUA
(2022)
Article
Geosciences, Multidisciplinary
Don A. White, Shiqi Ren, Daniel S. Mendham, Francisco Balocchi-Contreras, Richard P. Silberstein, Dean Meason, Andres Iroume, Pablo Ramirez de Arellano
Summary: The impact of Eucalyptus plantations on water balance is believed to be more severe compared to commercial alternatives like Pinus species. However, only a few studies have directly compared the effects of Eucalyptus species and commercial alternatives on water balance. This paper presents a meta-analysis of published data and finds that, for a given climate wetness index, Eucalyptus and Pinus have similar annual water use. This study also highlights the correlation between soil depth and residuals for Eucalyptus, suggesting that the model overestimates or underestimates vegetation evaporation efficiency based on soil depth.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Soil Science
Francisco Balocchi, Ty P. A. Ferre, Thomas Meixner, Jose Luis Arumi
Summary: The freeze-thaw process plays a crucial role in controlling hydrologic processes, especially in cold and mountainous regions. Factors such as soil pore size, particle contact, and meteorological data influence this process. Simulating and studying the freeze-thaw process can provide insights into soil behavior and properties, serving as the basis for future research.
Article
Water Resources
Francisco Balocchi, Diego Rivera, Jose Luis Arumi, Uwe Morgenstern, Donald A. White, Richard P. Silberstein, Pablo Ramirez de Arellano
Summary: This study measured the water and flow in three streams before and after a wildfire in central Chile. It found that peak flows and baseflow increased in some catchments but decreased in others after the fire. However, there is currently no conclusive evidence of hydrological changes at the groundwater level due to wildfire.
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)
