Article
Environmental Sciences
P. Tepes, N. Gourmelen, P. Nienow, M. Tsamados, A. Shepherd, F. Weissgerber
Summary: Recent studies show that Arctic glaciers and ice caps (GIC) are rapidly losing mass, primarily due to surface ablation caused by climate warming. The research indicates that the dynamic imbalance of Arctic GIC is increasing in the Barents and Kara Sea region.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Kristaps Lamsters, Jurijs Jeskins, Ireneusz Sobota, Janis Karuss, Peteris Dzerins
Summary: Unmanned Aerial Vehicles (UAVs) are increasingly used in glaciology to generate high-resolution digital elevation models (DEMs) for detailed evaluation of glacial processes. This study conducted two UAV surveys on a glacier in Svalbard, obtaining surface velocity and elevation change data, and demonstrating the efficiency of high-resolution DEMs in reconstructing glacier changes.
Article
Geochemistry & Geophysics
Xiangchao Meng, Qiang Liu, Feng Shao, Shutao Li
Summary: This article proposes a spatio-temporal-spectral collaborative learning framework for spatio-temporal fusion of multisource remote-sensing images. The framework integrates convolutional neural network and recurrent neural network to learn and fuse features from multiscale spatial-spectral to spatio-temporal. Experimental results demonstrate the competitive performance of the proposed method in fusing images with land cover changes.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Environmental Sciences
Avinash Kumar, Juhi Yadav, Rahul Mohan
Summary: The study revealed a negative trend in Arctic sea-ice since 1979, particularly in the Barents Sea and Kara Sea, with significant sea-ice reduction in the Barents Sea. The research demonstrated that sea-ice cover in the BKS is influenced by SST, AT, and OLR.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Bohai Zhang, Furong Li, Huiyan Sang, Noel Cressie
Summary: The decline of Arctic sea ice extent has become a significant concern among scientists. By analyzing remote sensing data and employing a spatio-temporal logistic autoregressive model, researchers have found that Arctic sea ice is experiencing a consistent decline and contraction, particularly at higher latitudes. This has important implications for understanding the impact of climate change on sea ice.
Article
Multidisciplinary Sciences
Qiang Zhang, Zexi Shen, Yadu Pokhrel, Daniel Farinotti, Vijay P. Singh, Chong-Yu Xu, Wenhuan Wu, Gang Wang
Summary: Concerns have been raised about the sustainability of water resources in High Mountain Asia, particularly in the Tibetan Plateau and surrounding areas, which protect millions of people from water stress. The mechanisms behind the heterogeneous trends in terrestrial water storage over the Tibetan Plateau remain poorly understood.
Article
Meteorology & Atmospheric Sciences
Susmitha Joseph, A. K. Sahai, Hindhiya Shabu, R. Chattopadhyay, Manpreet Kaur
Summary: The study finds that under the backdrop of global warming, monsoon intraseasonal oscillations exhibit more spatio-temporal variability, leading to an increased frequency of extreme events. Changes in the frequency and intensity of short active/break spells are observed, along with an east-west asymmetry in the spatial distribution of rainfall.
THEORETICAL AND APPLIED CLIMATOLOGY
(2022)
Article
Water Resources
Cintia B. Uvo, Kean Foster, Jonas Olsson
Summary: This study conducted in Sweden's sixty-four river gauging stations investigated the impact of climate teleconnection patterns on local streamflow. Different teleconnection patterns were found to have varying effects on streamflow in different seasons and regions. The northern region is mainly influenced by snow, while the southern region is primarily influenced by rain.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Geography, Physical
Christian Sommer, Thorsten Seehaus, Andrey Glazovsky, Matthias H. Braun
Summary: Glaciers in the Russian High Arctic have been subject to extensive atmospheric warming due to global climate change. However, their contribution to sea level rise has been relatively small over the past decades. Recent research has found that the mass loss rate of glaciers on the Russian archipelagos has doubled in recent years.
Article
Urban Studies
Julius H. P. Breuer, John Friesen
Summary: This paper explores the impact of urbanization on city development, particularly in African and Asian cities. It proposes a method for determining the mobility of slum dwellers within cities and applies it to three continents. The study reveals differences in slum population mobility across continents and within cities, highlighting the importance of considering these factors in infrastructure planning.
Article
Geochemistry & Geophysics
Chengyuan Zhang, Qunming Wang, Ping Lu, Yong Ge, Peter M. Atkinson
Summary: This article proposes a fast and slow changes constrained spatio-temporal subpixel mapping (FSSTSPM) method to enhance subpixel mapping (SPM) by utilizing temporal information from time-series images. The FSSTSPM method is validated using synthetic datasets and real datasets, and the results demonstrate its superiority, especially in the presence of proportion errors.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Multidisciplinary Sciences
Ghani Rahman, Atta-ur Rahman, Sami Ullah, Muhammad Dawood, Muhammad Farhan Ul Moazzam, Byung Gul Lee
Summary: This study analyzed spatio-temporal fluctuations in rainfall in Khyber Pakhtunkhwa, Pakistan to evaluate drought and wet spell patterns, identifying a decreasing trend in rainfall in some areas, while others experienced an increasing trend. The study used the SPEI and SR tests to assess drought and wet spells, providing valuable insight for water resource planning and management.
Article
Environmental Sciences
Daniela M. R. Walch, Rakesh K. Singh, Janne E. Soreide, Hugues Lantuit, Amanda Poste
Summary: This study utilized in-situ field campaigns and ocean color remote sensing to analyze the spatio-temporal variability of suspended particulate matter in the Adventfjorden estuary, Svalbard. The results revealed a strong seasonality of SPM concentrations, with the highest values occurring in June, July, and August, showing a strong correlation with average air temperature in the 24 hours prior to observation.
Article
Geography, Physical
Jakub Malecki
Summary: Small land-terminating mountain glaciers in the Arctic play a significant role in local hydrology, microclimate, and ecology. However, due to climate warming, these glaciers may melt away in the coming decades. The study reveals that while most glaciers are thinning, there are also instances of glacier thickening.
Article
Engineering, Environmental
Fernanda Valente, Marcio Laurini
Summary: The study presented a statistical decomposition method for analyzing changes in fire occurrence in Australia and its relationship with climate factors. Variability in fire occurrence trends was found, with evidence suggesting a link to climate patterns. The approach offers a useful tool for studying changes in the intensity of fire occurrence over time, capturing long-term changes, as well as seasonal and cyclical effects.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2021)
Article
Geography, Physical
Laurence M. Dyke, Anna L. C. Hughes, Camilla S. Andresen, Tavi Murray, John F. Hiemstra, Anders A. Bjork, Angel Rodes
Article
Environmental Sciences
Juliana Costi, Jorge Arigony-Neto, Matthias Braun, Bulat Mavlyudov, Nicholas E. Barrand, Aline Barbosa da Silva, Wiliam Correa Marques, Jefferson Cardia Simoes
Article
Geosciences, Multidisciplinary
Alistair Everett, Tavi Murray, Nick Selmes, David Holland, Dominic E. Reeve
Summary: Research shows that mass loss directly driven by submarine plume is significantly less than mass loss from major calving events on the Greenland ice sheet, suggesting that the contribution of submarine plume-driven mass loss at deep marine-terminating glaciers may be less than at shallower termini.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
Sofia-Katerina Kufner, Alex M. Brisbourne, Andrew M. Smith, Thomas S. Hudson, Tavi Murray, Rebecca Schlegel, John M. Kendall, Sridhar Anandakrishnan, Ian Lee
Summary: Microseismicity caused by glacial sliding can be used to monitor bed properties, with events occurring near the ice-bed interface showing flow-parallel stick-slip behavior. The events are clustered in regions of stiff till and along mega-scale glacial lineations, exhibiting spatial and temporal restrictions in their occurrence patterns. The study suggests that multiple bed deformation processes are simultaneously active during glacial sliding, indicating continuous reorganization of the bed.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geography, Physical
Tristram D. L. Irvine-Fynn, Tom O. Holt, Timothy D. James, Mark W. Smith, Nick Rutter, Philip R. Porter, Andrew J. Hodson
Summary: In a warming Arctic, the increase in seasonal bare-ice extent due to rising glacier snowlines enhances the importance of turbulent energy fluxes for surface ablation and glacier mass balance. This study uses time-lapse photogrammetry to analyze the fine-scale supraglacial topography on a glacier in Svalbard. The results show that surface roughness is affected by supraglacial hydrology and temporal changes in albedo feedbacks, and the roughness parameter decreases and then increases following the exposure of bare-ice. The study also identifies the influence of hydrological drivers on plot-scale topography. This research provides an analytical framework for future studies on ice surface roughness and hydro-meteorological variables and aims to improve parameterizations of evolving bare-ice areas.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
Kira G. Olsen, Meredith Nettles, L. Mac Cathles, Justin C. Burton, Tavi Murray, Timothy D. James
Summary: A physics-based source model improves seismic-magnitude recovery for glacial-earthquake modeling; maximum force is less sensitive to model choices than M-CSF and is preferred for describing glacial-earthquake size; rapid force reversal during iceberg calving is crucial for capturing in a glacial-earthquake source model.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
Rebecca Schlegel, Tavi Murray, Andrew M. Smith, Alex M. Brisbourne, Adam D. Booth, Edward C. King, Roger A. Clark
Summary: Basal properties beneath ice streams and glaciers play a crucial role in ice flow dynamics and the formation of subglacial landforms. A study using high-resolution radar data reveals spatial variations in basal properties and provides constraints on the occurrence of water bodies on the crest of landforms.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Review
Green & Sustainable Science & Technology
Fabian Drenkhan, Wouter Buytaert, Jonathan D. Mackay, Nicholas E. Barrand, David M. Hannah, Christian Huggel
Summary: Changes in the mountain cryosphere have significant impacts on downstream water security and water-dependent ecosystems. To better assess mountain water security, it is necessary to understand the complex interaction between glacial meltwater and human-natural systems. This requires a shift towards a more integrated social-ecological perspective and the integration of locally relevant knowledge into a collaborative science-policy-community framework. This approach, combined with hydrological risk assessment, can support the development of tailored and transformational adaptation strategies.
NATURE SUSTAINABILITY
(2023)
Article
Geosciences, Multidisciplinary
T. S. Hudson, S. K. Kufner, A. M. Brisbourne, J. M. Kendall, A. M. Smith, R. B. Alley, R. J. Arthern, T. Murray
Summary: This study investigates the slip of glaciers over the underlying bed, which is the dominant mechanism governing the migration of ice into the oceans and contributes to sea-level rise. The researchers use passive seismic observations to measure frictional shear stress and slip at the bed of the Rutford Ice Stream in Antarctica. They find that basal shear stresses and slip rates vary significantly in both space and time, indicating that the bed is more complex than previously assumed in ice stream models. This research provides important constraints for ice-dynamics models and is critical for understanding the contribution of ice mass loss to sea-level rise.
Article
Geosciences, Multidisciplinary
Kate E. Ashley, Robert McKay, Johan Etourneau, Francisco J. Jimenez-Espejo, Alan Condron, Anna Albot, Xavier Crosta, Christina Riesselman, Osamu Seki, Guillaume Mass, Nicholas R. Golledge, Edward Gasson, Daniel P. Lowry, Nicholas E. Barrand, Katelyn Johnson, Nancy Bertler, Carlota Escutia, Robert Dunbar, James A. Bendle
Summary: In recent decades, Antarctic sea-ice extent has increased, contrary to the decrease simulated by Earth system models. The circulation of water masses beneath large-cavity ice shelves may be a key driver of this phenomenon. Analysis of a Holocene sediment core off East Antarctica reveals that mid-Holocene ice shelf cavity expansion led to cooling of surface waters and sea-ice growth, slowing down basal ice shelf melting. Incorporating this feedback mechanism into global climate models is crucial for future projections of Antarctic changes.
CLIMATE OF THE PAST
(2021)
Article
Water Resources
Jonathan D. Mackay, Nicholas E. Barrand, David M. Hannah, Stefan Krause, Christopher R. Jackson, Jez Everest, Alan M. MacDonald, Brighid E. O. Dochartaigh
HYDROLOGICAL PROCESSES
(2020)
Article
Geosciences, Multidisciplinary
Jonathan D. Mackay, Nicholas E. Barrand, David M. Hannah, Stefan Krause, Christopher R. Jackson, Jez Everest, Gudfinna Adalgeirsdottir, Andrew R. Black
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2019)
Article
Geography, Physical
Clemens Schannwell, Stephen Cornford, David Pollard, Nicholas E. Barrand
Article
Geography, Physical
Jonathan D. Mackay, Nicholas E. Barrand, David M. Hannah, Stefan Krause, Christopher R. Jackson, Jez Everest, Guofinna Aoalgeirsdottir