Article
Geosciences, Multidisciplinary
F. E. Leonelli, M. Bellacicco, J. Pitarch, E. Organelli, B. Buongiorno Nardelli, V de Toma, C. Cammarota, S. Marullo, R. Santoleri
Summary: The North Atlantic Subtropical Gyre (NASTG) has experienced the fastest expansion of oligotrophic waters worldwide in response to ocean warming. The study demonstrates that ultra-oligotrophic waters are spatially expanding and increasing in frequency in the NASTG, shifting it to a dominant quasi-permanent ultra-oligotrophic condition, confirming the ongoing ocean desertification.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Review
Oceanography
K. R. Ridgway, S. D. Ling
Summary: The ocean region around Tasmania is a significant global ocean hotspot due to higher rate of warming than the global average. The nearshore Tasmanian waters are important for shallow-water ecosystems and human activities, but their sea surface temperature (SST) variability is not well understood, hindering local-scale mitigation and adaptation measures. This study uses high-resolution satellite SST data to explore variability over different time scales and identifies circulation drivers and trends associated with the East Australian Current Extension (EACx) and Zeehan Current (ZC).
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Fisheries
Astthor Gislason, Kristinn Gudmundsson, Solveig R. Olafsdottir, Hildur Petursdottir
Summary: This study compares the inter-annual dynamics of two biomass-dominant copepods in the Iceland Sea under relatively low and higher temperatures, finding temperature to be the most important environmental factor affecting their abundance, with opposite effects for the Arctic and Atlantic species.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Oceanography
Qiwei Hu, Xiaoyan Chen, Xianqiang He, Yan Bai, Fang Gong, Qiankun Zhu, Delu Pan
Summary: This study analyzed the impact of warming on phytoplankton distribution in the Arabian Sea, finding that different layers of phytoplankton had varied responses to warming. The interaction of temperature and nutrients exacerbated vulnerability in the shallower layer, while the deeper layer showed more adaptation to warming conditions. The research highlights the importance of assessing the response of phytoplankton biomass to global warming throughout the entire upper-water column.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Meteorology & Atmospheric Sciences
Leishan Jiang, Tim Li, Yoo-Geun Ham
Summary: Despite a weak linear relation between the equatorial Atlantic sea surface temperature anomaly (EA SSTA) and preceding winter El Nino-Southern Oscillation (ENSO), an EA warming event is typically preceded by either an El Nino or La Nina phase. The physical mechanisms behind this asymmetric impact were investigated through observations and modeling analyses. El Nino-induced EA warming is caused by El Nino-related SSTA in the South Atlantic, while La Nina-induced EA warming is driven by westerly anomalies during the decaying spring. The asymmetric response in the South Atlantic is attributed to the differential heating strength over the central Pacific and Maritime Continent. The distinct evolutions of El Nino and La Nina also contribute to the asymmetric EA response. The study suggests that the South Atlantic SSTA and ENSO temporal evolution play crucial roles in explaining the asymmetric impacts of El Nino and La Nina on EA warming.
JOURNAL OF CLIMATE
(2023)
Article
Oceanography
Ashley Arroyo, Mary-Louise Timmermans, Isabela Le Bras, William Williams, Sarah Zimmermann
Summary: The Canada Basin in the Arctic Ocean has experienced significant changes in ocean properties, particularly a warming of the Pacific Summer Water layer. This study analyzes the corresponding changes in dissolved oxygen (O-2) to gain insights into the physics, biology, pathways, and evolution of the Pacific Summer Water. O-2 observations from 2003 to 2021 indicate that the warming of the Pacific Summer Water layer is accompanied by a decrease in O-2 concentrations. The combined influences of physical and biological changes on O-2 concentrations in the Pacific Summer Water are assessed through the analysis of nutrients and other biogeochemical properties. Surface warming and decreased solubility account for O-2 decreases in the upper portion of the Pacific Summer Water, while a combination of warming-related solubility decrease and increased organic matter breakdown explain larger O-2 changes in the deeper portion. The decreasing O-2 in the warming Arctic Ocean is consistent with O-2 trends in global warming oceans, emphasizing the importance of continued observations and analyses.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Review
Oceanography
David W. Townsend, Neal R. Pettigrew, Maura A. Thomas, Stephen Moore
Summary: We analyzed a 19-year time series of mooring data and in situ nitrate data collected in the Jordan Basin in the Gulf of Maine. The analyses confirmed previous findings that the Gulf of Maine has been warming due to air-sea heat fluxes. The warming is primarily attributed to changes in advective heat fluxes from neighboring shelf and slope regions, leading to a new baseline of warmer temperatures and higher salinities in the Gulf.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Mathematics, Interdisciplinary Applications
Feng Xu, Yu-Ang Du, Hong Chen, Jia-Ming Zhu
Summary: This study focused on the migration of herring and mackerel in Scottish fisheries, establishing SARIMA models for 39 regions. The results showed that the model effectively predicted the temperature changes in the studied sea area from 2021 to 2050, providing a basis for adjusting fishing ranges in the future.
Article
Ecology
Victor M. Aguilera, Nina Bednarsek
Summary: This study reveals significant latitudinal variations in environmental habitat conditions and phenotypic plasticity among populations of Acartia tonsa copepods, suggesting a potential mechanism for their differential adaptation to different coastal provinces in the South East Pacific.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Meteorology & Atmospheric Sciences
Stacy E. Porter, Ellen Mosley-Thompson, Lonnie G. Thompson, Aaron B. Wilson
Summary: The study created one of the first basinwide histories of Pacific climate variability using an assemblage of four ice cores collected around the Pacific basin. The reconstructed IPO index suggested that the Little Ice Age was primarily defined by a weak, negative IPO phase, leading to more La Nina-like conditions. Furthermore, in the current warm period, there are interesting dynamical relationships between the IPO and the intertropical convergence zone (ITCZ).
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
Lina Wang, Kewei Lyu, Wei Zhuang, Weiwei Zhang, Salvienty Makarim, Xiao-Hai Yan
Summary: This study shows that the rapid warming of the Southern Hemisphere oceans has slowed down in recent years, leading to less contribution to global ocean heat storage. Two warming hotspot regions have also experienced cooling over the past few years. The decadal shift is related to variations in the Southern Annular Mode and Interdecadal Pacific Oscillation.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Cesc Gordo-Vilaseca, Fabrice Stephenson, Marta Coll, Charles Lavin, Mark John Costello
Summary: Observed range shifts of numerous species into the Arctic and sub-Arctic seas due to ocean warming have led to an increase in local and regional species richness, driven by an increase in sea bottom temperature. While the probability of occurrence for Arctic species generally declined over time, the enrichment of the Arctic and sub-Arctic marine fauna is attributed to an increase in species from southern latitudes, consistent with climate change.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Mia Cerfonteyn, Rene Groben, Daniel Vaulot, Kristinn Gudmundsson, Pauline Vannier, Maria Dolores Perez-Hernandez, Viggo Por Marteinsson
Summary: Phytoplankton in Iceland's contrasting hydrography showed different community compositions between northern and southern water masses, indicating sensitivity to climate change. Emiliania and Phaeocystis dominated in Atlantic-influenced waters and colder, northern waters respectively. The study provides a valuable dataset for further exploring the diversity and biogeography of marine protists in the North Atlantic through 18S rRNA analysis.
SCIENTIFIC REPORTS
(2023)
Article
Oceanography
Hiromichi Ueno, Masato Oda, Katsura Yasui, Ryo Dobashi, Humio Mitsudera
Summary: The distribution and interannual variation of the winter halocline in the upper layers of the World Ocean were found to be closely related to sea surface salinity, with strong haloclines occurring in areas of low salinity.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Engineering, Marine
Sheng Wu, Zhengyu Liu, Jinbo Du, Yonggang Liu
Summary: This research examines three conceptual pathways to achieve a warming target of 1.5 degrees C and explores the response of ocean temperature. The results show that by 2100, the global ocean temperature increases except in the Southern Ocean. It is interesting to note that the ocean surface temperature and heat content respond differently in different hemispheres during the warming process.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)