Letter
Geosciences, Multidisciplinary
N. Jullien, A. J. Tedstone, H. Machguth, N. B. Karlsson, V. Helm
Summary: We analyzed airborne accumulation radar data from 2002 to 2018 to investigate changes in the extent and thickness of ice slabs in Greenland. It was found that ice slabs several meters thick were already present before 2002. Between 2012 and 2018, the ice slabs expanded inland by 13,400-17,600 km(2), or 37%-44%. The study also demonstrated that the extremely warm summer of 2012 led to the formation of near-surface ice layers at higher elevations, enabling the development of ice slabs with only moderate melting in subsequent summers.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Plant Sciences
Christopher J. Williamson, Thomas Turpin-Jelfs, Miranda J. Nicholes, Marian L. Yallop, Alexandre M. Anesio, Martyn Tranter
Summary: Glacier algae residing on the surface ice of the southwestern Greenland Ice Sheet show lower cellular nutrient content and elevated C:N and C:P ratios, indicating adaptation to oligotrophic environments. This lower nutrient requirement may aid the proliferation of glacier algal blooms in nutrient-poor cryospheric regions in a warming world. Up-scaling of observations suggests the potential for glacier algae to accumulate significant amounts of carbon and nitrogen within surface ice locations, confirming previous modeling estimates.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Lei Zheng, Xiao Cheng, Xinyi Shang, Zhuoqi Chen, Qi Liang, Kang Wang
Summary: This study provides a new strategy for quantitatively estimating the daily surface melt of the Greenland Ice Sheet using remote sensing data, and the results show a close agreement between the satellite-derived meltwater volume and regional climate models.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Peisi Shang, Xiaoli Su, Zhicai Luo
Summary: The mass change patterns of the Greenland ice sheet (GrIS), a major contributor to global mean sea-level rise, have been studied using Gravity Recovery and Climate Experiment (GRACE)/GRACE Follow-On (GRACE-FO) gravimetry data. The results show that mass gain occurs mainly in winter and spring, while mass loss is dominant in summer. The study also reveals an increasing frequency of spring mass loss since 2015 and a higher occurrence of autumn mass gain after 2014. Both mass gain and mass loss show a slightly increasing trend during 2003-2020, potentially in response to ongoing Arctic warming.
Article
Multidisciplinary Sciences
Michael Wood, Eric Rignot, Ian Fenty, Lu An, Anders Bjork, Michiel van den Broeke, Cilan Cai, Emily Kane, Dimitris Menemenlis, Romain Millan, Mathieu Morlighem, Jeremie Mouginot, Brice Noel, Bernd Scheuchl, Isabella Velicogna, Josh K. Willis, Hong Zhang
Summary: Research shows that the intrusion of warm Atlantic Waters has significantly influenced the retreat of 226 marine-terminating glaciers in Greenland, particularly those located in deep fjords. Excluding ocean-induced undercutting in ice sheet projections may underestimate mass loss by at least a factor of 2.
Article
Geology
Danni M. Pearce, James M. Lea, Douglas W. F. Mair, Brice R. Rea, J. Edward Schofield, Nicholas A. Kamenos, Kathryn M. Schoenrock, Lukasz Stachnik, Bonnie Lewis, Iestyn Barr, Ruth Mottram
Summary: Our understanding of the relationship between climate and mass flux from marine-terminating tidewater glaciers (TWGs) in the Greenland Ice Sheet has been improved through the study of the largest tidewater glacier in southwest Greenland. The data from the study provide a long-term record of the glacier's advance during the first half of the past millennium and demonstrate the sensitivity of TWGs to climate cooling. These findings validate numerical modeling approaches and have significant implications for prognostic modeling.
Article
Multidisciplinary Sciences
Andrew J. Christ, Paul R. Bierman, Joerg M. Schaefer, Dorthe Dahl-Jensen, Jorgen P. Steffensen, Lee B. Corbett, Dorothy M. Peteet, Elizabeth K. Thomas, Eric J. Steig, Tammy M. Rittenour, Jean-Louis Tison, Pierre-Henri Blard, Nicolas Perdrial, David P. Dethier, Andrea Lini, Alan J. Hidy, Marc W. Caffee, John Southon
Summary: Understanding the history of the Greenland Ice Sheet (GrIS) is crucial for determining its response to climate change and contribution to sea level rise. Through the analysis of subglacial sediment at the base of the Camp Century ice core, researchers have uncovered evidence of at least two episodes of ice-free, vegetated conditions in northwestern Greenland during the Pleistocene, suggesting that the GrIS persisted through much of the Pleistocene but experienced melting and reformation at least once since 1.1 million years ago.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Geochemistry & Geophysics
Shuai Gao, Kang Yang, Yao Lu, Xin Lu, Manchun Li
Summary: This study proposes a method using supraglacial rivers to match multitemporal images and measure ice flow velocities. By integrating image information and GIS operations, the summer and annual ice flow velocities can be accurately calculated and validated with other ice flow velocity products, demonstrating the high accuracy of this method.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Geosciences, Multidisciplinary
J. Harper, J. Saito, N. Humphrey
Summary: High rainfall on the Greenland Ice Sheet is changing the thermal and structural composition of the surface layer. A 4-day cold-season warm/rain event caused significant changes in the firn column, with rapid warming and refreezing of liquid water. It took up to 8 weeks for the heat fluxes and water refreezing to return to normal, impacting the evolution and runoff characteristics of the ice sheet.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Jonathan L. Carrivick, Penelope How, James M. Lea, Jenna L. Sutherland, Michael Grimes, Fiona S. Tweed, Stephen Cornford, Duncan J. Quincey, Joseph Mallalieu
Summary: Ice-marginal lakes have a significant impact on glacier dynamics, but have been overlooked in studies on the Greenland ice sheet and peripheral glaciers. This study finds that lakes cover 10% of the Greenland ice margin and occur on 5% of peripheral glaciers. Ice velocity at lakes is around 25% higher than on land.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
A. M. Solgaard, D. Rapp, B. P. Y. Noel, C. S. Hvidberg
Summary: This study analyzed high-resolution ice velocity data of the Greenland Ice Sheet using a clustering algorithm and identified characteristic seasonal flow patterns. The results showed spatial and interannual variability in these flow patterns, which are linked to water availability at the base of the ice.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
David M. Chandler, Jemma L. Wadham, Peter W. Nienow, Samuel H. Doyle, Andrew J. Tedstone, Jon Telling, Jonathan Hawkings, Jonathan D. Alcock, Benjamin Linhoff, Alun Hubbard
Summary: Intensive study of the Greenland Ice Sheet's subglacial drainage has shown efficient drainage development under thick ice, with this research providing valuable data to validate and improve current numerical drainage system models. The study revealed a fast/efficient subglacial drainage system extending under ice over 900m thick, which remained stable even under variable melt inputs. This research emphasizes the importance of understanding subglacial drainage dynamics in the context of ice dynamics and hydrology.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Environmental Sciences
Arthur Elmes, Charlotte Levy, Angela Erb, Dorothy K. Hall, Ted A. Scambos, Nicolo DiGirolamo, Crystal Schaaf
Summary: The Greenland ice sheet experienced an extreme early-season melt event in mid-June 2019 due to earlier-than-average melt onset and low prior winter snowfall, leading to a rapid decrease in surface albedo and greater solar energy absorption. Satellite data showed a significant and extended decrease in albedo in Greenland during 2019, resulting in increased radiative forcing of the ice sheet. The study also demonstrated the utility of Landsat-8 albedo product in capturing detailed spatial heterogeneity of the landscape for a more refined representation of the surface energy budget.
Article
Ecology
Matej Znaminko, Lukas Falteisek, Kristyna Vrbicka, Petra Klimova, Jesper R. Christiansen, Christian J. Jorgensen, Marek Stibal
Summary: Subglacial environments provide conditions suitable for microbial methane production, and high methane emissions have been discovered at a glacier in Greenland. The microbial assemblage exported in meltwater from the methane release hotspot is mainly composed of methylotrophs, and their relative abundance increases as the melt season progresses.
Article
Geosciences, Multidisciplinary
Isabel J. Nias, Sophie Nowicki, Denis Felikson, Bryant Loomis
Summary: Mass loss from the Greenland Ice Sheet is a combination of surface mass balance and discharge due to ice dynamics. Perturbations to glacier termini result in immediate velocity and mass loss, as well as a diffusive response over time due to ice thickness evolution. Modeling the committed response of the ice sheet can provide estimates of its contribution to future sea level rise.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Geography, Physical
Jonathan L. Carrivick, Jacob Yde, Andrew J. Russell, Duncan J. Quincey, Thomas Ingeman-Nielsen, Joseph Mallalieu
Article
Meteorology & Atmospheric Sciences
Sebastian H. Mernild, Glen E. Liston, Christopher A. Hiemstra, Jacob C. Yde, James McPhee, Jeppe K. Malmros
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2017)
Article
Meteorology & Atmospheric Sciences
Sebastian H. Mernild, Glen E. Liston, Christopher Hiemstra, Andrew P. Beckerman, Jacob C. Yde, James McPhee
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2017)
Article
Meteorology & Atmospheric Sciences
Sebastian H. Mernild, Glen E. Liston, Christopher A. Hiemstra, Jeppe K. Malmros, Jacob C. Yde, James McPhee
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2017)
Article
Environmental Sciences
Jacob C. Yde, N. John Anderson, Eric Post, Jasmine E. Saros, Jon Telling
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2018)
Article
Environmental Sciences
Jonathan L. Carrivick, Jacob C. Yde, Niels Tvis Knudsen, Christian Kronborg
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2018)
Article
Environmental Sciences
Sebastian H. Mernild, Glen E. Liston, Dirk van As, Bent Hasholt, Jacob C. Yde
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2018)
Article
Environmental Sciences
Bent Hasholt, Dirk van As, Andreas B. Mikkelsen, Sebastian H. Mernild, Jacob C. Yde
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2018)
Article
Geography, Physical
Harold Lovell, Douglas I. Benn, Sven Lukas, Matteo Spagnolo, Simon J. Cook, Darrel A. Swift, Chris D. Clark, Jacob C. Yde, Tom Watts
Article
Meteorology & Atmospheric Sciences
Sebastian H. Mernild, Glen E. Liston, Christopher A. Hiemstra, Jacob C. Yde, Gino Casassa
JOURNAL OF HYDROMETEOROLOGY
(2018)
Article
Geography, Physical
Jacob C. Yde, Jakub D. Zarsky, Tyler J. Kohler, N. Tvis Knudsen, Mette K. Gillespie, Marek Stibal
Article
Water Resources
Lukasz Stachnik, Jacob C. Yde, Adam Nawrot, Lukasz Uzarowicz, Elzbieta Lepkowska, Katarzyna Kozak
HYDROLOGICAL PROCESSES
(2019)
Article
Microbiology
Jakub D. Zarsky, Tyler J. Kohler, Jacob C. Yde, Lukas Falteisek, Guillaume Lamarche-Gagnon, Jon R. Hawkings, Jade E. Hatton, Marek Stibal
FEMS MICROBIOLOGY ECOLOGY
(2018)
Article
Environmental Studies
Sebastian H. Mernild, Andrew P. Beckerman, Niels Tvis Knudsen, Bent Hasholt, Jacob C. Yde
GEOGRAFISK TIDSSKRIFT-DANISH JOURNAL OF GEOGRAPHY
(2018)
Article
Microbiology
Alejandro Mateos-Rivera, Lise Ovreas, Bryan Wilson, Jacob C. Yde, Kai W. Finster
FEMS MICROBIOLOGY ECOLOGY
(2018)
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)