Article
Meteorology & Atmospheric Sciences
Zili Shen, Anmin Duan, Dongliang Li, Jinxiao Li
Summary: Arctic sea ice has been rapidly decreasing in recent decades, especially in September. Climate models have shown significant differences in September sea ice extent (SSIE) compared to observations, indicating the potential influence of internal variability on SSIE. Using ensemble simulations from two models, we found that internal variability of local atmospheric circulation can contribute 12%-17% to the uncertainties in projected SSIE changes from 2016 to 2045. The tropical Pacific Ocean may act as a remote driver for sea ice melting, with a stronger coupling on decadal timescales. However, the models' inability to capture observed atmospheric circulation originating from the tropical Pacific Ocean propagating into the Arctic may lead to an underestimation of the contribution of atmospheric circulation to SSIE in the next three decades.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Dapeng Zhang, Yanyan Huang, Botao Zhou, Huijun Wang
Summary: This study assessed the capability of CMIP5/6 models in simulating the decadal decline of the South Asian high (SAH). The results show that CMIP6 models demonstrate better performances in simulating the variability and decadal changes of SAH compared to CMIP5 models, which is attributed to the more reasonable simulations of upper-tropospheric eddy temperature. The projection of SAH in the future is uncertain, as it displays obvious variations under different scenarios. The internal climate variability may play a more important role in influencing the decadal variations of SAH in the future.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Minhee Chang, Doo-Sun R. Park, Chang-Hoi Ho
Summary: An abrupt decrease in annual tropical cyclone genesis frequency (TCGF) has been noticed over the western North Pacific Ocean, with the decrease in October to December (OND) accounting for 79% of the total decrease after 1998. Different interdecadal changes in TCGF between October to December and January to September are attributed to variations in equatorial easterly wind anomalies and large-scale anticyclone anomalies in the subtropics. The extension of easterly wind anomalies under similar La Nina-like SST warming pattern is responsible for the seasonal inhomogeneity of interdecadal changes in TCGF.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Xianke Yang, Ping Huang, Yong Liu, Dong Chen
Summary: This study finds that the negative relationship between El Nino-Southern Oscillation (ENSO) and summer Northeast Asia (NEA) circulation has undergone changes over the past few decades, particularly a significant strengthening after 1999/2000. This change is closely connected with the variation of circumglobal teleconnection (CGT)/Silk Road pattern (SRP) and is influenced by the ENSO-Indian summer monsoon rainfall (ISMR) relationship and ENSO evolution.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Geon-Il Kim, Jong-Seong Kug
Summary: This study uses global climate models to simulate the physical processes controlling the decadal modulation of El Nino-Southern Oscillation (ENSO) amplitude. The results show that changes in thermocline feedback, particularly in the oceanic response to zonal wind stress, are the main factor influencing the amplitude modulation. Additionally, the characteristics of the background state, such as subtropical-tropical cells and ocean stratification, also contribute significantly to changes in the equatorial thermocline feedback.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Chi-Cherng Hong, Chi-Chun Chang, Kuan-Chieh Chen, Chih-Hua Tsou
Summary: This study found that the intensification of tropical cyclones to major cyclones in the western North Pacific region has shown a significant difference between autumn and summer since the early 2000s. The ratio of major cyclones to the total number of cyclones has been increasing continuously in autumn but not in summer. The increase in the ratio of major cyclones in autumn is associated with interdecadal variability in cyclone activity and intraseasonal oscillations. The location of cyclone genesis and intraseasonal oscillations shifted westward in autumn, resulting in enhanced interaction and energy conversion between cyclones and oscillations.
JOURNAL OF CLIMATE
(2023)
Article
Meteorology & Atmospheric Sciences
Minghao Yang, Chongyin Li, Xin Li, Yanke Tan, Xiong Chen, Chao Zhang
Summary: Based on the analysis of daily NCEP reanalysis data, this study examines the interdecadal change in the relationship between the winter North Pacific storm track (WNPST) and the East Asian winter monsoon (EAWM), finding a weakening of the relationship since the mid-1980s. The influence of ENSO on the WNPST also shows significant differences before and after this period. Additionally, most CMIP6 models fail to reproduce the significant relationship between WNPST and EAWM.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Hao Wang, Xiao-Tong Zheng
Summary: This study investigates the interdecadal variability of cross-equatorial meridional winds in the eastern Pacific and its correlation with the El Nifio-Southern Oscillation (ENSO). Both observations and CMIP6 models show a negative correlation between interannual variations of the winds and ENSO, synchronized with the interdecadal variability of the winds. However, this relationship is underestimated in the models, especially in the historical simulations.
JOURNAL OF CLIMATE
(2023)
Article
Meteorology & Atmospheric Sciences
Yuanyuan Guo, Zhiping Wen, Yu Zhu, Xiaodan Chen
Summary: Tropical sea surface temperature and precipitation have significant climatic impacts globally through the generation of poleward-propagating Rossby waves. The dominant mode of tropical Pacific forcing experienced an interdecadal shift in the late 1990s from an eastern Pacific (EP) type to a central Pacific (CP) type. Different precipitation anomaly modes generate divergent flows, which determine the generation of Rossby waves. The synoptic high-frequency transient eddy activity plays a crucial role in the formation of teleconnection lobes at mid- to high latitudes. The EP-type (CP-type) tropical forcing mode significantly modulates the zonal displacement (strength) of the Amundsen Sea low and leads to distinct climate responses of West Antarctica and the Antarctic Peninsula in austral autumn.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Bo Pang, Adam A. Scaife, Riyu Lu, Rongcai Ren, Xiaoxuan Zhao
Summary: This study investigates the interdecadal variation of the Scandinavian (SCA) pattern and corresponding drivers during the boreal winter. It is found that the SCA pattern experiences a prominent regime shift from its negative to positive phase in the early 2000s based on several reanalyses. The results indicate that this interdecadal change is largely influenced by internal variability associated with a change in precipitation over the tropical Atlantic, with implications for future climate change over the Eurasian continent.
JOURNAL OF CLIMATE
(2023)
Article
Meteorology & Atmospheric Sciences
Zongjian Ke, Xingwen Jiang, Jinming Feng, Zunya Wang
Summary: The study found that the Philippine Sea anomalous anticyclone (PSAC) significantly affects precipitation in southwestern China, especially after the 1980s, leading to a significant increase in precipitation. The enhancement and southwestward shift of the PSAC in the 1980s may be attributed to stronger air-sea interactions induced by the El Nino-Southern Oscillation.
JOURNAL OF HYDROMETEOROLOGY
(2021)
Article
Environmental Sciences
Ute Daewel, Naveed Akhtar, Nils Christiansen, Corinna Schrum
Summary: A numerical modeling study suggests that atmospheric wakes caused by offshore wind farms in the North Sea can have significant impacts on marine ecosystems, affecting both surface ocean and seafloor. The study shows that wind wakes from offshore wind farms can lead to large-scale changes in annual primary production and alter sediment carbon and oxygen concentration in the southern North Sea.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Sho Arakane, Huang-Hsiung Hsu
Summary: The study revealed the significant contributions of tropical cyclones to the climate mean state and variability in the western North Pacific, emphasizing their crucial role in the climate system and the need to explore their interactions with large-scale circulations for a full understanding of climate variability and changes.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Jie Jiang, Tianjun Zhou, Xiaolong Chen, Bo Wu
Summary: Central Asia is highly sensitive to changes in precipitation, with observed variations in precipitation over the past decades being related to tropical Pacific decadal variability and Atlantic multidecadal variability. These variations can affect precipitation over central Asia by influencing atmospheric circulation patterns in the region.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Zhangqun Li, Ziniu Xiao
Summary: This study investigates the impact of the interannual variation of Tibetan Plateau-Indian Ocean thermal contrast on southern TP precipitation in May and its changes in the mid-1990s. It is found that the southern TP precipitation is closely related to the TP-Indian Ocean thermal contrast, which could be represented by a thermal contrast index (TCI). The analysis reveals that the southern TP precipitation in May increases significantly after 1996. Meanwhile, the TCI also enhances notably.
JOURNAL OF CLIMATE
(2022)
Article
Environmental Sciences
Lynne J. Shannon, Kelly Ortega-Cisneros, Tarron Lamont, Henning Winker, Robert Crawford, Astrid Jarre, Marta Coll
FRONTIERS IN MARINE SCIENCE
(2020)
Article
Ecology
Saachi Sadchatheeswaran, George M. Branch, Lynne J. Shannon, Coleen L. Moloney, Marta Coll, Tamara B. Robinson
ECOLOGICAL MODELLING
(2020)
Article
Fisheries
Claire Saraux, William J. Sydeman, John F. Piatt, Tycho Anker-Nilssen, Jonas Hentati-Sundberg, Sophie Bertrand, Philippe M. Cury, Robert W. Furness, James A. Mills, Henrik Osterblom, Giannina Passuni, Jean-Paul Roux, Lynne J. Shannon, Robert J. M. Crawford
Summary: Forage fish populations undergo large fluctuations, but most predators are buffered due to slower life pace. Seabird predation becomes significant when prey abundance is low. Threshold of 18% prey biomass should be considered for forage fish management. Predation pressure is not correlated with prey dynamics in the five ecosystems studied.
FISH AND FISHERIES
(2021)
Article
Ecology
Lynne Shannon, Lauren Waller
Summary: This article discusses the potential competition between the fishmeal industry and marine predators, as well as the implications of taking away forage fish from the sea to support agriculture. It also explores the idea of more sustainable alternatives to fishmeal and the role of the fishing industry in developing these alternatives.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Biodiversity Conservation
C. Steyn, L. J. Shannon, L. K. Blamey
Summary: This study examines the eastward shift of rock lobsters in the early 1990s and the resulting changes in the ecosystem structure. By simulating different fishing management strategies, it was found that reducing fishing pressure on abalone and reef fish while increasing pressure on rock lobster could partially restore the post-invaded ecosystem to its pre-invasion state.
Article
Ecology
Saachi Sadchatheeswaran, George M. Branch, Lynne J. Shannon, Marta Coll, Jeroen Steenbeek
Summary: This study investigated the impact of non-native ecosystem engineers on an intertidal rocky shore in South Africa, using non-spatial temporal modelling and spatial modelling. By incorporating the Ecoengineer plug-in, the simulations accurately matched empirical observations, highlighting the importance of considering structural habitat complexity when analyzing intertidal ecosystems.
ECOLOGICAL MODELLING
(2021)
Article
Environmental Sciences
Derek P. Tittensor, Camilla Novaglio, Cheryl S. Harrison, Ryan F. Heneghan, Nicolas Barrier, Daniele Bianchi, Laurent Bopp, Andrea Bryndum-Buchholz, Gregory L. Britten, Matthias Buchner, William W. L. Cheung, Villy Christensen, Marta Coll, John P. Dunne, Tyler D. Eddy, Jason D. Everett, Jose A. Fernandes-Salvador, Elizabeth A. Fulton, Eric D. Galbraith, Didier Gascuel, Jerome Guiet, Jasmin G. John, Jason S. Link, Heike K. Lotze, Olivier Maury, Kelly Ortega-Cisneros, Juliano Palacios-Abrantes, Colleen M. Petrik, Hubert du Pontavice, Jonathan Rault, Anthony J. Richardson, Lynne Shannon, Yunne-Jai Shin, Jeroen Steenbeek, Charles A. Stock, Julia L. Blanchard
Summary: The use of enhanced marine ecosystem models and Earth system model outputs from CMIP6 reveals a greater decline in mean global ocean animal biomass than previously projected under both strong-mitigation and high-emissions scenarios. Climate change impacts are expected to lead to long-term declines in global marine animal biomass and unevenly distributed impacts on fisheries. The new ensemble ecosystem simulations show a greater decline in mean global ocean animal biomass under both strong-mitigation and high-emissions scenarios due to elevated warming, highlighting the need to reduce uncertainty in projected responses of marine ecosystems to climate change.
NATURE CLIMATE CHANGE
(2021)
Letter
Ecology
Rebecca Chaplin-Kramer, Kate A. Brauman, Jeannine Cavender-Bares, Sandra Diaz, Gabriela Teixeira Duarte, Brian J. Enquist, Lucas A. Garibaldi, Jonas Geldmann, Benjamin S. Halpern, Thomas W. Hertel, Colin K. Khoury, Joana Madeira Krieger, Sandra Lavorel, Thomas Mueller, Rachel A. Neugarten, Jesus Pinto-Ledezma, Stephen Polasky, Andy Purvis, Victoria Reyes-Garcia, Patrick R. Roehrdanz, Lynne J. Shannon, M. Rebecca Shaw, Bernardo B. N. Strassburg, Jason M. Tylianakis, Peter H. Verburg, Piero Visconti, Noelia Zafra-Calvo
NATURE ECOLOGY & EVOLUTION
(2022)
Article
Dermatology
Jordan Z. Tacktill, Zachary Rasor, Josh Adams, Gary Driver, Logan Shannon, Scott Hudzinski, Marissa J. Carter, Adam L. Isaac, Charles M. Zelen
Summary: The use of dehydrated human amnion and chorion allograft (dHACA) as a covering for surgical wounds in foot and ankle surgery has been found to improve wound healing and reduce complications.
INTERNATIONAL WOUND JOURNAL
(2022)
Article
Environmental Sciences
Francisco Ramirez, Lynne J. Shannon, Ronaldo Angelini, Jeroen Steenbeek, Marta Coll
Summary: Climate change and fisheries interact synergistically, impacting optimal habitats for pelagic fish species in the Central and Southern Atlantic Ocean. Urgent management and conservation actions are needed to balance resource exploitation and marine life protection in the face of climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Kaylee P. Smit, Lara Van Niekerk, Linda R. Harris, Abigail McQuatters-Gollop, Lynne J. Shannon, Kerry J. Sink
Summary: Despite the availability of tools and indicators to measure biodiversity, many developing countries face challenges in coastal and marine assessments. These challenges include limited understanding of methods, capacity, and funding for assessments, as well as a lack of systematic approaches. Key actions can address these challenges by developing a coordinated framework, prioritizing urgent pressures, and using relevant indicators.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Francisco Ramirez, Lynne J. Shannon, Carl D. van der Lingen, Laura Julia, Jeroen Steenbeek, Marta Coll
Summary: The interaction between climate and fisheries can have significant impacts on marine ecosystems, seafood provision, and human wellbeing. Evaluating the spatial overlap between these stressors is crucial for identifying conservation priorities. In the Southern Benguela and Agulhas Bank ecosystems off South Africa, certain areas have been highly impacted by unfavorable environmental conditions and fishing pressure, while other areas show more favorable conditions. The Southern Benguela region accumulates most of the cumulative hotspots, while the south coast and areas south of Cape Town show positive trends, suggesting potential for sustainable growth in the small pelagic fishery.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Lisa Skein, Kerry J. J. Sink, Prideel A. A. Majiedt, Megan G. G. van der Bank, Kaylee P. P. Smit, Lynne J. J. Shannon
Summary: The need to move toward marine ecosystem-based management is recognized globally. However, many countries, including South Africa, fail to effectively address multiple interacting pressures in their marine assessments and management. Integrated Ecosystem Assessment (IEA) is proposed as a tool to organize information and guide cross-sectoral management decisions. This study identifies the sectors and pressures with the highest impact risk in the South African marine territory, including fishing, shipping, and coastal infrastructure. The findings align with those of the recent South African National Biodiversity Assessment and highlight the importance of understanding local knowledge gaps to improve assessment accuracy and prioritize impactful sectors.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
K. Ortega-Cisneros, E. Weigum, R. Chalmers, S. Grusd, A. T. Lombard, L. Shannon
Summary: The Ecopath with Ecosim (EwE) modelling framework was used to develop a model of Algoa Bay and test the ecosystem impacts of the implementation of the Addo Elephant National Park Marine Protected Area (MPA). The model reasonably reproduced the observed data, showing an increase in total biomass and a decrease in catches after the implementation of the MPA.
AFRICAN JOURNAL OF MARINE SCIENCE
(2022)