Article
Oceanography
John Malito, Emily Eidam, Jaap Nienhuis
Summary: This study investigates the morphologic response of the Alaskan Beaufort Shelf (ABS) to increasing wave energy and suggests that coastal changes in response to the growing Arctic wave climate may be dependent on shelf morphology and even mitigated in some regions by morphologic adjustment.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Meteorology & Atmospheric Sciences
Hyung-Gyu Lim, Jong-Yeon Park, John P. Dunne, Charles A. Stock, Sung-Ho Kang, Jong-Seong Kug
Summary: This study demonstrates that anthropogenic nitrogen fluxes have exacerbated Arctic warming and sea ice loss through physical-biological feedback mechanisms. The strongest impacts were observed in the Eurasian shelf seas, where surface temperatures increased by 12% and sea ice concentrations decreased by 17% due to increased nitrogen fluxes.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Constantin W. Arnscheidt, John Marshall, Pierre Dutrieux, Craig D. Rye, Ali Ramadhan
Summary: This study investigates the vertical distribution of Antarctic glacial meltwater in the Southern Ocean and finds that the settling depth of the meltwater is primarily determined by buoyancy forcing and ambient stratification, contrary to previous belief of centrifugal instability playing a significant role. The research also highlights the impact of localized variability in stratification on the vertical distribution of meltwater near Pine Island Glacier.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Geosciences, Multidisciplinary
Rongrong Pan, Qi Shu, Qiang Wang, Shizhu Wang, Zhenya Song, Yan He, Fangli Qiao
Summary: An analysis of CMIP6 simulations reveals that certain climate models project more severe Arctic climate change compared to others, involving variations in sea ice, ocean mixed layer, air-sea heat flux, and surface air temperature in wintertime. Interestingly, these models utilize the same ocean model family (NEMO), while the choice of models differs for the atmosphere and sea ice. The magnitude of Arctic climate change is influenced by the strength of poleward ocean heat transport, which is notably higher in this particular group of models. Establishing the plausibility of these high Arctic climate sensitivity models to anthropogenic forcing is essential due to the potential consequences.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Cara Nissen, Ralph Timmermann, Mario Hoppema, Judith Haucka
Summary: Tipping points in the Earth system refer to critical thresholds where the system undergoes a transition. The Weddell Sea in the Southern Ocean is an important region for carbon and oxygen transfer, but it is at risk of a regime shift under future climate scenarios. Using a global ocean-biogeochemistry model, researchers find that the Weddell Sea will experience a regime shift by 2100 in the highest-emission scenario, with significant implications for local ecosystems and global climate.
JOURNAL OF CLIMATE
(2023)
Article
Engineering, Aerospace
Carsten A. Ludwigsen, Ole B. Andersen
Summary: The sea level in the Arctic remains uncertain, with disagreements between GRACE and satellite altimetry data. A study comparing different datasets found that the best agreement was reached using a combination of in-situ hydrographic data and altimetry products. However, a large residual signal was found in the East Siberian Sea, indicating uncertainties in satellite observations. Overall, caution is recommended when using satellite observations in the Arctic region to study sea level trends.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Oceanography
Georgia M. Hole, Thomas Rawson, Wesley R. Farnsworth, Anders Schomacker, Olafur Ingolfsson, Marc Macias-Fauria
Summary: The 500-year history of naturally felled driftwood incursion to northern Svalbard reflects regional sea ice conditions and Arctic Ocean circulation. By analyzing provenance and age determinations, researchers gained insights into Arctic Ocean currents and climatic conditions with fine spatial resolution. The study indicates centennial-to decadal-scale shifts in source regions for driftwood incursion to Svalbard, aligning with fluctuations in Transpolar Drift and Beaufort Gyre strengths and associated climate conditions.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Plant Sciences
Haimanti Biswas
Summary: This study investigates the growth response of Arctic diatom Chaetoceros gelidus under varying CO2 and light levels. The results suggest that this species has a high adaptability to variable light levels and is capable of accumulating substantial amounts of organic carbon at low CO2 levels. Additionally, under nitrogen limitation, intracellular nitrogen resources may be recycled, resulting in an increased carbon-to-nitrogen ratio within the cells.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Oceanography
Robinson Hordoir, Oystein Skagseth, Randi B. Ingvaldsen, Anne Britt Sando, Ulrike Loeptien, Heiner Dietze, Andrea M. U. Gierisch, Karen M. Assmann, Oyvind Lundesgaard, Sigrid Lind
Summary: Climate change has a significant impact on the Arctic Ocean, affecting its thermo-haline structure. Analysis of a 3D ocean model simulation from 1970 to 2019 shows a decrease in stratification, decrease in fresh water inputs, and increase in momentum inputs. The winter mixed layer becomes deeper while the summer mixed layer shows a less evident deepening pattern. Regional exceptions include areas where the mixed layer becomes shallower. The results highlight the non-linear dynamics of the Arctic Ocean.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Haakon Hop, Mikko Vihtakari, Bodil A. Bluhm, Malin Daase, Rolf Gradinger, Igor A. Melnikov
Summary: Recent research shows that the sea-ice macrofauna in the Arctic has changed over the past decades, with a decline in ice amphipods and benthic amphipods and variations in species composition among different locations. The disappearance of multiyear sea ice has led to a reduction in important species, while benthic amphipods have higher abundance near land.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Rakesh Kumar Singh, Anna Vader, Christopher J. Mundy, Janne E. Soreide, Katrin Iken, Kenneth H. Dunton, Laura Castro de la Guardia, Mikael K. Sejr, Simon Belanger
Summary: Climate change has significantly affected the Arctic Ocean and its marginal seas, particularly the reduction of sea ice and its impact on photosynthetically available radiation (PAR). This study implemented a PAR algorithm to evaluate the influence of various factors on PAR in the coastal Arctic Ocean. The algorithm was validated using in situ measurements and showed robust performance throughout the year.
Article
Engineering, Environmental
Henry P. Huntington, Andrey Zagorsky, Bjorn P. Kaltenborn, Hyoung Chul Shin, Jackie Dawson, Maija Lukin, Parnuna Egede Dahl, Peiqing Guo, David N. Thomas
Summary: The changing Arctic Ocean is impacting Arctic societies and the global community, with threats to food security and culture for Indigenous Peoples, as well as new opportunities and challenges arising from resource development and tourism growth. Additionally, geopolitical tensions and economic shifts are emerging as interest in the Arctic increases.
Article
Environmental Sciences
Ji-Hoon Oh, Soon-Il An, Jongsoo Shin, Jong-Seong Kug
Summary: This study demonstrates the importance of the initial buoyancy states of the Arctic Ocean in determining the recovery of Arctic and global temperatures. It suggests that denser Arctic water and faster recovery of the Atlantic meridional overturning circulation are linked to delayed Arctic temperature recovery.
Article
Meteorology & Atmospheric Sciences
Amelie Simon, Guillaume Gastineau, Claude Frankignoul, Clement Rousset, Francis Codron
Summary: The study investigates the impact of Arctic sea ice loss on the ocean and atmosphere, focusing on two main methods of ice-constraining: reduction of sea ice albedo and reduction of thermal conductivity. The results show that Arctic sea ice loss leads to Arctic warming, enhanced oceanic circulation, and increased North Atlantic water inflow.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Hongjie Wang, Peigen Lin, Robert S. Pickart, Jessica N. Cross
Summary: By compiling CO2 measurements from 1989 to 2019, researchers found that the Bering and eastern Chukchi Sea shelves act as a CO2 sink except under certain conditions. The CO2 system in the area is mainly controlled by the biological pump, with wind-driven upwelling causing episodic outgassing. Temperature is the dominant driver of seasonal surface Delta fCO(2), and long-term patterns in Delta fCO(2) are influenced by temperature as well. Rapid warming in the northern Chukchi Sea has decreased the summer CO2 sink, while increasing primary productivity has increased it on the Bering Sea shelf.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Editorial Material
Environmental Sciences
Sophia C. Johannessen, Robie W. Macdonald
ENVIRONMENTAL RESEARCH LETTERS
(2018)
Editorial Material
Environmental Sciences
Sophia C. Johannessen, Robie W. Macdonald
ENVIRONMENTAL RESEARCH LETTERS
(2018)
Article
Environmental Sciences
Sophia C. Johannessen, Robie W. Macdonald, Cynthia A. Wright
ESTUARIES AND COASTS
(2019)
Article
Environmental Sciences
Matthew B. Alkire, Andrew Jacobson, Robie W. Macdonald, Gregory Lehn
ESTUARIES AND COASTS
(2019)
Article
Chemistry, Multidisciplinary
Kang Wang, Kathleen M. Munson, Debbie A. Armstrong, Robie W. Macdonald, Feiyue Wang
Article
Geosciences, Multidisciplinary
C. Michelle Kamula, Robie W. Macdonald, Zou Zou A. Kuzyk
Article
Environmental Sciences
Yi-Fan Li, Li-Na Qiao, Nan-Qi Ren, Robie W. Macdonald, Kurunthachalam Kannan
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Oceanography
David W. Capelle, Zou Zou A. Kuzyk, Tim Papakyriakou, Celine Gueguen, Lisa A. Miller, Robie W. Macdonald
PROGRESS IN OCEANOGRAPHY
(2020)
Review
Environmental Sciences
Li-Na Qiao, Peng-Tuan Hu, Robie Macdonald, Kurunthachalam Kannan, Anatoly Nikolaev, Yi-Fan Li
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Peng-Tuan Hu, Peng-Hao Su, Wan-Li Ma, Zi-Feng Zhang, Li-Yan Liu, Wei-Wei Song, Li-Na Qiao, Chong-Guo Tian, Robie W. Macdonald, Anatoly Nikolaev, Zhi-Guo Cao, Yi-Fan Li
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Environmental Sciences
Li-Na Qiao, Wan-Li Ma, Zi-Feng Zhang, Li-Yan Liu, Wei-Wei Song, Hong-Liang Jia, Ning-Zheng Zhu, Wen-Long Li, Robie W. Macdonald, Anatoly Nikolaev, Yi-Fan Li
Summary: This study found a linear relationship between gas/particle partition coefficients and octanol-air partition coefficients as well as subcooled liquid vapor pressures. Analytical equations based on steady state theory were developed to predict related parameters, and the evaluation using global monitoring data showed that the equations could accurately reproduce the observed trends in monitoring results.
Article
Environmental Sciences
Yi-Fan Li, Li-Na Qiao, Robie W. Macdonald
Summary: Gas/particle partitioning plays a key role in the transport and fate of semi-volatile organic compounds in the atmosphere, with the equilibrium assumption being challenged by experimental findings. Analytical equations were developed to calculate parameters related to partitioning, revealing that deviations from theoretical predictions cannot be solely explained by experimental or statistical artifacts.
Article
Geochemistry & Geophysics
Melissa S. Schwab, Jorg D. Rickli, Robie W. Macdonald, H. Rodger Harvey, Negar Haghipour, Timothy Eglinton
Summary: The interactions between organic matter and its mineral carrier remain strong during sediment transport in the Western Arctic Ocean, indicating the potential for using organic-inorganic tracer measurements to understand sediment sources and physical and geochemical processes. The consistent information obtained from carbon and neodymium isotopic data suggests a new approach for identifying biogeochemical and ecological changes stemming from sea ice loss and increased fluvial inputs of organic carbon in this dynamic high latitude marginal sea.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Food Science & Technology
Tao Huang, Zaili Ling, Jianmin Ma, Robie W. Macdonald, Hong Gao, Shu Tao, Chongguo Tian, Shijie Song, Wanyanhan Jiang, Lulu Chen, Kaijie Chen, Zhiyong Xie, Yuan Zhao, Liuyuan Zhao, Chen Gu, Xiaoxuan Mao
Review
Environmental Sciences
Jason M. E. Ahad, Robie W. Macdonald, Joanne L. Parrott, Zeyu Yang, Yifeng Zhang, Tariq Siddique, Alsu Kuznetsova, Cassandra Rauert, Elisabeth Galarneau, William B. Studabaker, Marlene Evans, Mark E. McMaster, Dayue Shang
ENVIRONMENTAL POLLUTION
(2020)