Article
Oceanography
Marine Decuypere, L. Bruno Tremblay, Carolina O. Dufour
Summary: This study investigates the impact of different horizontal resolutions on meridional Ocean Heat Transport (OHT) and sea ice in the Arctic. The results show that OHT and sea ice extent vary with different resolutions and the relationship is non-monotonic. The differences between model configurations mainly arise from the preindustrial state. With increasing spatial resolution, less heat is delivered to the Arctic, and the Medium-resolution configuration is in best agreement with observations.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Geosciences, Multidisciplinary
Rebecca A. Woodgate, Cecilia Peralta-Ferriz
Summary: The study reveals that the flow through the Bering Strait has been increasing since 1990, resulting in a reduction in Chukchi residence times, longer duration of warm waters in the Arctic, and winter waters becoming fresher. These changes may have implications for Arctic ecosystems and underwater mixing.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Qifeng Qian, Xiaojing Jia, Renguang Wu, Min Wang
Summary: This study investigates the impact of interannual variation in autumn Arctic sea ice concentration on early winter precipitation over nonmonsoonal Eurasian regions through observations and numerical model experiments. It is found that negative autumn sea ice anomalies induce heating in the overlying atmosphere and excite a Rossby wave that propagates from the Beaufort-Chukchi-East Siberian Seas (BCES) through the Atlantic Ocean to Eurasia. The wave obtains energy from the mean flow, with baroclinic energy conversion being more important. Anomalous cyclone and anticyclone associated with the Rossby wave result in positive precipitation anomalies over southern Europe and negative anomalies over central Asia and the west Siberian plain.
JOURNAL OF CLIMATE
(2023)
Article
Engineering, Environmental
Seung-Kyu Kim, Hee-Jee Lee, Ji-Su Kim, Sung-Ho Kang, Eun-Jin Yang, Kyoung-Ho Cho, Zhexi Tian, Anthony Andrady
Summary: The study revealed that the plastic particles trapped in Arctic sea ice are comparable to those in other Arctic basins, suggesting a strong linkage between the Western Arctic Ocean and the Arctic Central Basin. Additionally, it highlighted the role of the Western Arctic Ocean ice zone as a sink for global microplastics and a potential source for Arctic microplastics.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geosciences, Multidisciplinary
Peigen Lin, Robert S. Pickart, Harry Heorton, Michel Tsamados, Motoyo Itoh, Takashi Kikuchi
Summary: The Beaufort Gyre in the Arctic Ocean has transitioned to a quasi-stable state where the freshwater content has plateaued and the cold halocline layer has thinned. This transition is driven by variation in the regional wind forcing. The thinning of the cold halocline layer could potentially impact the Atlantic Meridional Overturning Circulation by releasing freshwater and freshening the subpolar North Atlantic.
Article
Meteorology & Atmospheric Sciences
T. O. N. G. Lu, Z. H. I. W. E. I. Zhu, Y. I. N. G. Yang, J. I. N. G. Ma, G. A. N. G. Huang
Summary: This study investigates the formation mechanism of the summer Western North Pacific Anomalous Anticyclone (WNPAC) that is independent of El Niño-Southern Oscillation (ENSO). It is found that besides the significant relationship with ENSO, the WNPAC index remains almost unchanged after removing the impact of ENSO, suggesting the possibility of other origins of the WNPAC. A two-step mechanism from the Atlantic to the Pacific is proposed for the formation of ENSO-independent summer WNPAC.
JOURNAL OF CLIMATE
(2023)
Article
Multidisciplinary Sciences
Catherine Lalande, Jacqueline M. Grebmeier, Andrew M. P. McDonnell, Russell R. Hopcroft, Stephanie O'Daly, Seth L. Danielson
Summary: Unusually warm conditions in the Pacific Arctic region led to a dramatic loss of sea ice cover and increased inflow of warm Pacific waters, impacting the sinking particles of phytoplankton and zooplankton communities. Spatial and temporal variations in living algal cells, chlorophyll a, total particulate matter, particulate organic carbon, zooplankton fecal pellets, and zooplankton and meroplankton fluxes were observed from 2017 to 2019, showing the effects of sea ice cover and water temperature on biological processes.
Article
Multidisciplinary Sciences
Igor V. Polyakov, Randi B. Ingvaldsen, Andrey V. Pnyushkov, Uma S. Bhatt, Jennifer A. Francis, Markus Janout, Ronald Kwok, Ostein Skagseth
Summary: This study shows that the atmospheric Arctic Dipole (AD) modulates the inflows of warm subarctic waters, affecting sea ice, oceanic circulation, and heat fluxes in the Nordic Seas. The AD+ phase slows sea-ice loss, while a transition to the AD- phase may accelerate the decline of Arctic sea ice.
Article
Meteorology & Atmospheric Sciences
Chuan-Yang Wang, Xiao-Tong Zheng, Shang-Ping Xie
Summary: This study demonstrates that under global warming, annual variability in precipitation, low-level winds, and sea level pressure over the Indo-western Pacific will intensify. This intensification is primarily attributed to the increased specific humidity, resulting in enhanced precipitation variability. The strengthened large-scale anomalous anticyclone further intensifies the precipitation anomalies. However, the interbasin positive feedback between the anticyclone and northern Indian Ocean SST shows no significant change.
JOURNAL OF CLIMATE
(2023)
Article
Meteorology & Atmospheric Sciences
Hanjie Fan, Song Yang, Chunzai Wang, Yuting Wu, Guangli Zhang
Summary: This study examines the projected changes in the Pacific meridional mode (PMM) and its impact on the El Nino-Southern Oscillation (ENSO) under greenhouse gas forcing. The results suggest potential increases in both PMM amplitude and its impact on ENSO, highlighting the increasing importance of PMM for ENSO development. The study calls for more attention to be paid to PMM for ENSO prediction.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Xinyu Li, Riyu Lu, Jiping Liu, Shaoyin Wang
Summary: Arctic sea ice in summer experiences large-scale circulation anomalies on both interannual and decadal time scales. The interannual anomalies are mainly influenced by thermodynamic processes, while the decadal anomalies are driven by wind-induced sea ice drift. Both types of anomalies lead to sea ice decline, but the impact is more significant on the interannual time scale.
JOURNAL OF CLIMATE
(2022)
Article
Oceanography
Luisa von Albedyll, Janin Schaffer, Torsten Kanzow
Summary: Increased ocean-to-ice heat fluxes contribute to accelerated mass loss of Greenland's marine-terminating glaciers, influenced by ocean current variability. A study of ocean currents at Nioghalvfjerdsfjorden Glacier (79NG) indicates significant intra-annual variability, strongly influenced by continental shelf circulation. The complexity of cavity circulation is further enhanced by temporally varying preferred export routes.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Engineering, Marine
Xiaoxia Cai, Yanpei Zhuang, Hongliang Li, Jing Xu, Haiyan Jin, Jianfang Chen
Summary: The optical properties of colored dissolved organic matter (CDOM) in the upper water of the western Arctic Ocean were studied. The study found a decoupling effect between CDOM concentration and biological productivity, and an increase in DOM molecular weight with salinity. Four fluorescent components were identified, with C3 and C4 components being associated with Pacific water inflow.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Meteorology & Atmospheric Sciences
Jakob Dorr, Marius Arthun, Tor Eldevik, Erica Madonna
Summary: Ocean heat transport plays a crucial role in driving changes to the Arctic winter sea ice cover, with future projections indicating an increasing influence from the Pacific and Atlantic sectors.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Oyvind Lundesgaard, Arild Sundfjord, Angelika H. H. Renner
Summary: This study examines the evolution of sea ice concentration along the continental margin north of Svalbard between 2012 and 2019, finding that interannual variability in sea ice concentration is primarily driven by large-scale ice drift rather than abnormal upper ocean heat content. The research also suggests that the southern continental slope of the Eurasian Basin serves as an important melting area for sea ice advected from the north.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
