Article
Meteorology & Atmospheric Sciences
Camila Gomes Martins Ramos, Haochen Tan, Pallav Ray, Jimy Dudhia
Summary: Precipitation cools the surface due to sensible heat flux, with the highest values found in the Intertropical Convergence Zone and the South Pacific Convergence Zone. The correlation between Q(P) and precipitation is not well established on land, but Q(P) can be larger than Q(SH) and Q(LH) during heavy precipitation events at shorter time scales based on in-situ buoy observations. Future research avenues related to Q(P) implications are discussed.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Shuzhou Wang, Yaoming Ma, Yuxin Liu
Summary: The Noah-MP land surface model was used to simulate the land surface processes on the Tibetan Plateau, and the distribution and changes of sensible and latent heat fluxes were analyzed. The study found that the inter-annual variations of sensible heat fluxes were larger in the central and western regions, while latent heat fluxes were larger in the eastern region. The overall trend for latent heat fluxes on the Tibetan Plateau was increasing, but with a decreasing trend since around 2003.
ATMOSPHERIC RESEARCH
(2022)
Article
Environmental Sciences
Ren Wang, Longhui Li, Pierre Gentine, Yao Zhang, Jianyao Chen, Xingwei Chen, Lijuan Chen, Liang Ning, Linwang Yuan, Guonian Lu
Summary: This study uses machine learning models and ground observations to determine that global land evapotranspiration (ET) has significantly increased in recent decades, with increasing temperature being the main driver. These findings have important implications for estimating ET and understanding terrestrial water cycles in changing environments.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Xin Zhou, Pallav Ray, Bradford S. Barrett, Pang-Chi Hsu
Summary: Recent studies have shown that most AMIP5 models overestimate surface heat fluxes over tropical oceans, with AMIP6 models showing improvement in this aspect. However, systematic spatial biases remain in both sets of models, resulting in only small improvements in simulated fluxes. The primary reasons for the improvements seen in AMIP6 are the better representation of wind speed and air-sea humidity difference for latent heat flux, and air-sea temperature difference for sensible heat flux.
ATMOSPHERIC RESEARCH
(2022)
Article
Environmental Sciences
Jinxin Yang, Zhifeng Wu, Massimo Menenti, Man Sing Wong, Yanhua Xie, Rui Zhu, Sawaid Abbas, Yong Xu
Summary: Urban morphology affects the exchange of sensible heat flux and net radiation, which impacts urban heat mitigation plans. This study parameterized the geometric effects on net radiation and calculated the net radiation and sensible heat flux in Hong Kong. The study proposed a Normalized Urban Sensible Heat Mitigation Index (NUSHMI) based on the ratio of net radiation and sensible heat flux. The findings identified urban configurations that maximize the dissipation of absorbed radiant energy as sensible heat, which can inform efficient urban landscape design for compact cities.
Article
Environmental Sciences
Erin B. Wetherley, Dar A. Roberts, Christina L. Tague, Charles Jones, Dale A. Quattrochi, Joseph P. McFadden
Summary: This study investigates the variability of urban energy flux across different landcover and climate gradients in urbanized Los Angeles County, USA. The research shows that urban climates are significantly impacted by localized parameters, irrigation, and regional climate. Furthermore, schedule-based water conservation policies may reduce the cooling capacity of urban vegetation in the late afternoon, and there is a stronger negative effect of distance from the coast on latent heat flux in interior areas compared to coastal areas.
Article
Environmental Sciences
Jaemin Kim, Yun Gon Lee
Summary: This study used satellite data and observational data to analyze ocean-atmosphere energy exchange around the Korean Peninsula, revealing seasonal characteristics and the impact of summer typhoons on marine heat flux. The results showed a strong correlation between satellite-derived air-sea variables and marine buoy observational data.
Article
Geosciences, Multidisciplinary
J. Masanganise, R. Kunz, A. D. Clulow, T. Mabhaudhi, M. J. Savage
Summary: This study estimated soybean evapotranspiration using the surface renewal (SR) method, and found that the SRMOST and SRDT methods slightly overestimated evapotranspiration during flowering, pod formation, and seed filling, while underestimating it during senescence and maturity compared to the standard crop coefficient (Kc) approach. The SRDT method showed closer agreement with the Kc approach. Overall, the surface renewal method is a reliable and cost-effective method for estimating crop evapotranspiration when crop coefficients are problematic.
PHYSICS AND CHEMISTRY OF THE EARTH
(2022)
Article
Agronomy
Yini Han, Songheng Jin, Wenjing Chen, Misha Zhan, Zheng Yuan, Xiao Wang, Shangbin Bai
Summary: In this study, the authors investigated the surface energy balance and its control factors in a poplar plantation in northern China. They found significant differences in energy partitioning between dry and wet periods, as well as between different seasons within the year. Soil water availability played a dominant role in controlling energy exchange, and the limitation of poplar water use and energy partitioning under current water conditions was highlighted. The study suggests the need for careful species selection for afforestation in this area.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Heping Liu, Zhongming Gao, Gabriel G. Katul
Summary: This study investigates the impact of asymmetric flux transport by large turbulent eddies on the non-closure of the surface energy balance. It is found that under unstable atmospheric stability conditions, sweeps and ejections of large eddies cause asymmetric heat and water vapor transport, leading to reduced fluxes. The asymmetry in flux transport contributes to the observed non-closure of the surface energy balance, particularly as surface heating increases and wind speeds decrease.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Environmental Sciences
Pierre Durand
Summary: The surface energy balance equation, which distributes the available radiative energy between different heat fluxes, has been found to have a non-closure problem in previous measurements. This paper suggests additional terms that are based on thermodynamic considerations and could potentially explain the non-closure. Testing these corrections on observations from different sites improved the closure defect significantly.
Article
Environmental Sciences
Francesc Castellvi, Noman Ali Buttar, Yongguang Hu, Kamran Ikram
Summary: This method estimates the sensible heat flux for unstable atmospheric conditions using half-hourly measurements as input, avoiding the need for estimating other parameters. It shows potential for remote sensing applications and demonstrates high accuracy without bias in all data.
Article
Meteorology & Atmospheric Sciences
Na Li, Ping Zhao, Changyan Zhou
Summary: In this study, the daily sensible and latent heat fluxes in the Tibetan Plateau are estimated using the maximum entropy production model. The results show good performance of the model and reveal the spatial distribution and trends of surface heat fluxes in the region.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Jofia Joseph, M. S. Girishkumar, Hamza Varikoden, V. P. Thangaprakash, S. Shivaprasad, E. Pattabhi Rama Rao
Summary: The sub-daily variability of latent and sensible heat flux in the Bay of Bengal during the summer shows different patterns in weak and strong wind regimes, influenced by air temperature, humidity, and wind speed. The distinct evolutions of these heat fluxes are driven by atmospheric boundary layer processes and land-sea breeze signals. The relationship between the turbulent heat fluxes and the Indian summer monsoon phases has also been established.
Article
Environmental Sciences
Noman Ali Buttar, Yongguang Hu, Josef Tanny, Ali Raza, Yasir Niaz, Muhammad Imran Khan, Naeem Saddique, Abid Sarwar, Ahmad Azeem, Fiaz Ahmed, Muhammad Bilal Idrees
Summary: Evapotranspiration is essential for irrigation and water resource management. The eddy covariance (EC) method is commonly used to directly measure evapotranspiration, but it is costly and complex. The flux variance (FV) method is a low-cost alternative that estimates sensible heat flux using air temperature measurements. This study compared the performance of the FV method with direct EC measurements and found good agreement for both sensible and latent heat fluxes.
Article
Meteorology & Atmospheric Sciences
Douglas J. Parker, Alan M. Blyth, Steven J. Woolnough, Andrew J. Dougill, Caroline L. Bain, Estelle de Coning, Mariane Diop-Kane, Andre Kamga Foamouhoue, Benjamin Lamptey, Ousmane Ndiaye, Paolo Ruti, Elijah A. Adefisan, Leonard K. Amekudzi, Philip Antwi-Agyei, Cathryn E. Birch, Carlo Cafaro, Hamish Carr, Benard Chanzu, Samantha J. Clarke, Helen Coskeran, Sylvester K. Danuor, Felipe M. de Andrade, Kone Diakaria, Cheikh Dione, Cheikh Abdoulahat Diop, Jennifer K. Fletcher, Amadou T. Gaye, James L. Groves, Masilin Gudoshava, Andrew J. Hartley, Linda C. Hirons, Ishiyaku Ibrahim, Tamora D. James, Kamoru A. Lawal, John H. Marsham, J. N. Mutemi, Emmanuel Chilekwu Okogbue, Eniola Olaniyan, J. B. Omotosho, Joseph Portuphy, Alexander J. Roberts, Juliane Schwendike, Zewdu T. Segele, Thorwald H. M. Stein, Andrea L. Taylor, Christopher M. Taylor, Tanya A. Warnaars, Stuart Webster, Beth J. Woodhams, Lorraine Youds
Summary: Africa has the potential to benefit greatly from advancements in weather predictions, and the SWIFT project is playing a significant role in advancing scientific solutions and enhancing forecasting capabilities in the region. By focusing on research, training, and collaboration between academia and operational agencies, SWIFT is helping to build capacity in African meteorology and improve the quality and relevance of weather forecasts.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2022)
Article
Meteorology & Atmospheric Sciences
Sonja S. Folwell, Christopher M. Taylor, Rachel A. Stratton
Summary: The partitioning of rainfall and the influence of rainfall intensity on land surface hydrology were studied using different simulation models. The results showed that high resolution convection permitting models improved the simulation of rainfall intensity distributions, and changing the convective parameterisation significantly impacted land surface behaviour.
Article
Environmental Sciences
Christopher M. Taylor, Cornelia Klein, Cheikh Dione, Douglas J. Parker, John Marsham, Cheikh Abdoulahat Diop, Jennifer Fletcher, Abdoul Aziz Saidou Chaibou, Dignon Bertin Nafissa, Valiyaveetil Shamsudheen Semeena, Steven J. Cole, Seonaid R. Anderson
Summary: In tropical convective climates, combining near-real time satellite observations of the land surface and convective clouds can aid in early warning of severe weather. Land surface temperature (LST) data can be used as a proxy for soil moisture deficit to characterize the state of the surface energy balance. LST data show high predictive skill early in the rainy season and can extend the skill in predicting intense convection beyond the afternoon. The developed technique using LST data and convective features allows for nowcasting of existing and likely new convective systems.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Harry Mutton, Robin Chadwick, Matthew Collins, F. Hugo Lambert, Ruth Geen, Alexander Todd, Christopher M. Taylor
Summary: This study examines the impact of the direct radiative effect of increased CO2 on West African monsoon precipitation. The results show that the weakening of the shallow meridional circulation over North Africa leads to an increase in WAM precipitation. Additionally, the warming patterns in the atmosphere and surface also influence local soil moisture feedbacks and circulation changes.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Patricia de Rosnay, Philip Browne, Eric de Boisseson, David Fairbairn, Yoichi Hirahara, Kenta Ochi, Dinand Schepers, Peter Weston, Hao Zuo, Magdalena Alonso-Balmaseda, Gianpaolo Balsamo, Massimo Bonavita, Niels Borman, Andy Brown, Marcin Chrust, Mohamed Dahoui, Giovanna Chiara, Stephen English, Alan Geer, Sean Healy, Hans Hersbach, Patrick Laloyaux, Linus Magnusson, Sebastien Massart, Anthony McNally, Florian Pappenberger, Florence Rabier
Summary: This article presents the coupled data assimilation activities at ECMWF, which aim to provide consistent initial conditions to the coupled atmosphere, land, and ocean forecast model. The article introduces different DA systems and observing systems for each Earth-system component, discusses challenges related to observation consistency and availability, presents coupling methodologies and ongoing developments, and illustrates the benefits and challenges of coupled DA through various applications. The article also discusses future plans for coupled DA developments in support of ECMWF's Earth-system strategy 2021-2030.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2022)
Article
Meteorology & Atmospheric Sciences
J. K. Fletcher, C. A. Diop, E. Adefisan, M. A. Ahiataku, S. O. Ansah, C. E. Birch, H. L. Burns, S. J. Clarke, J. Gacheru, T. D. James, C. K. Ngetich Tuikong, D. Koros, V. S. Indasi, B. L. Lamptey, K. A. Lawal, D. J. Parker, A. J. Roberts, T. H. M. Stein, E. Visman, J. Warner, B. J. Woodhams, L. H. Youds, V. O. Ajayi, E. N. Bosire, C. Cafaro, C. A. T. Camara, B. Chanzu, C. Dione, W. Gitau, D. Groves, J. Groves, P. G. Hill, I. Ishiyaku, C. M. Klein, J. H. Marsham, B. K. Mutai, P. N. Ndiaye, M. Osei, T. I. Popoola, J. Talib, C. M. Taylor, D. Walker
Summary: Testbeds have played a crucial role in advancing weather forecasting worldwide. The African Science for Weather Information and Forecasting Techniques (SWIFT) program recently conducted the first high-impact weather testbed in tropical Africa, involving researchers and forecasters from multiple African countries, the United Kingdom, and international organizations. The testbed focused on trialing new forecasting and nowcasting products, engaging users and researchers, and generating feedback for future research and development. The outcomes of the testbed, including improved forecasts and recommended operating procedures, have strengthened partnerships and garnered support from funding agencies and organizational directors.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2023)
Review
Meteorology & Atmospheric Sciences
Sujay Kumar, Jana Kolassa, Rolf Reichle, Wade Crow, Gabrielle de Lannoy, Patricia de Rosnay, Natasha MacBean, Manuela Girotto, Andy Fox, Tristan Quaife, Clara Draper, Barton Forman, Gianpaolo Balsamo, Susan Steele-Dunne, Clement Albergel, Bertrand Bonan, Jean-Christophe Calvet, Jianzhi Dong, Hannah Liddy, Benjamin Ruston
Summary: The task of quantifying spatial and temporal variations in terrestrial water, energy, and vegetation conditions is challenging and impacted by climate change and human activities. Earth Observations (EOs) and data assimilation (DA) systems play a vital role in addressing this challenge. Satellite EOs provide quasi-global coverage, non-intrusive and rapid measurements, making them particularly relevant for studying land conditions. However, there are still important gaps in current research and applications of land DA, which need to be addressed to improve model predictions.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Green & Sustainable Science & Technology
L. Bamiere, V Bellassen, D. Angers, R. Cardinael, E. Ceschia, C. Chenu, J. Constantin, N. Delame, A. Diallo, A- Graux, S. Houot, K. Klumpp, C. Launay, E. Letort, R. Martin, D. Meziere, C. Mosnier, O. Rechauchere, M. Schiavo, O. Therond, S. Pellerin
Summary: Following the Paris agreement, both the EU and France aim to achieve carbon neutrality by 2050. This study quantitatively evaluates the additional carbon storage potential and cost of eight carbon-storing practices in the French agricultural sector. It finds that developing agroforestry, hedges, cover crops, and temporary grasslands can significantly contribute to soil and biomass carbon storage, reducing total French GHG emissions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Meteorology & Atmospheric Sciences
X. Meng, M. Deng, J. Talib, C. M. Taylor, P. Wu, S. Lyu, H. Chen, Z. Li, L. Zhao
Summary: Previous studies have found that some soil moisture products show good agreement with in situ measurements on the Tibetan Plateau. However, the response of soil moisture to precipitation variability in different products has not been assessed. This study examines the soil moisture response to precipitation variability across different time scales in satellite observations and reanalyses. The results show that different products have varying uncertainties and spatial variations in their soil moisture response to precipitation.
JOURNAL OF HYDROMETEOROLOGY
(2023)
Article
Geochemistry & Geophysics
Emma J. J. Barton, C. M. Taylor, A. K. Mitra, A. Jayakumar
Summary: The representation of land-atmosphere coupling in forecast models has a significant impact on weather prediction. A previous case study in Northern India identified atmospheric biases in a high-resolution forecast related to soil moisture, affecting the monsoon trough representation. This study aims to investigate if the biases exist in operational forecasts by the India NCMRWF, revealing warm biases in the boundary layer over North West India during the daytime, which weaken overnight.
ATMOSPHERIC SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Valiyaveetil Shamsudheen Semeena, Cornelia Klein, Christopher M. Taylor, Stuart Webster
Summary: Soil moisture (SM) affects weather by influencing surface flux partitioning, atmospheric profiles and circulations. Observational studies in West Africa suggest a dominant negative SM-precipitation feedback, where dry soils initiate and maintain convection. Concerns exist regarding the ability of models with parameterised convection to simulate this sensitivity.
ATMOSPHERIC SCIENCE LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Joshua Talib, Christopher M. Taylor, Bethan L. Harris, Caroline M. Wainwright
Summary: In semi-arid environments, rainfall-induced soil moisture fluctuations have a significant impact on surface turbulent fluxes, influencing regional circulations. This study investigates whether rainfall variability induced by the MJO triggers land-atmosphere feedbacks across East Africa. The results show that surface fluxes during the East African wet seasons are sensitive to MJO-induced precipitation variations, affecting surface temperatures, sensible heat fluxes, and evapotranspiration. This work highlights the importance of considering intraseasonal land-atmosphere interactions in climate modeling.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2023)
Article
Environmental Sciences
Gaetan Pique, Dominique Carrer, Emanuele Lugato, Remy Fieuzal, Raphael Garisoain, Eric Ceschia
Summary: Recent studies show that introducing cover crops in Europe can help reduce global warming and improve agricultural soils. By increasing the surface albedo, cover crops have a strong potential for climate mitigation. However, cropland should be permanently covered with vegetation or straws to avoid the darkening feedback loop effect caused by soil darkening.
Article
Geography, Physical
Wei Li, Jie Chen, Lu Li, Yvan J. Orsolini, Yiheng Xiang, Retish Senan, Patricia de Rosnay
Summary: Snow assimilation in the Tibetan Plateau has significant impacts on seasonal forecasts, improving the prediction of snow, temperature, and precipitation. However, in the eastern region, there is a decrease in the consistency between precipitation forecasts and satellite observations.
Article
Geosciences, Multidisciplinary
Rebecca J. Oliver, Lina M. Mercado, Doug B. Clark, Chris Huntingford, Christopher M. Taylor, Pier Luigi Vidale, Patrick C. McGuire, Markus Todt, Sonja Folwell, Valiyaveetil Shamsudheen Semeena, Belinda E. Medlyn
Summary: This study aimed to enhance the representation of key physiological processes within the JULES land surface model, focusing on refining the temperature sensitivity of photosynthesis and stomatal conductance affecting carbon, energy, and water fluxes. Different model configurations were tested and tailored to specific regions, demonstrating significant improvements in model simulation accuracy.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
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)