Article
Environmental Sciences
Mariapina Castelli
Summary: The study in the Alps found discrepancies between MOD16 and SSEBop in their accuracy to study the impact of climate change on evapotranspiration (ET), suggesting that neither product may be robust enough for this purpose.
Article
Environmental Sciences
Fuxia Yang, Hao Wang, Alexander F. Bouwman, Arthur H. W. Beusen, Xiaochen Liu, Junjie Wang, Zhigang Yu, Qingzhen Yao
Summary: This study investigates the relationship between nitrogen loading and deoxygenation in the Bohai Sea, and the consequences of future nitrogen loading scenarios. A modeling approach was used to quantify the contributions of different oxygen consumption processes and determine the main controlling mechanisms of summer bottom dissolved oxygen evolution in the central Bohai Sea. The results show that water column stratification during summer hampers oxygen exchange and that nutrient loading strongly correlates with water column oxygen consumption and harmful algal bloom proliferation. Future scenarios suggest that while deoxygenation may be reduced due to agricultural efficiency improvements and wastewater treatment, nutrient discharges are still projected to exceed 1980 levels and the risk of summer hypoxia may persist.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Pearse James Buchanan, Alessandro Tagliabue
Summary: Ocean deoxygenation is a growing concern for marine ecosystems, influenced by human activities. Changes in oxygen concentrations are affected by both oxygen supply and demand, with biogeochemical processes shaping oxygen demand in certain regions while ventilation changes dominate in others. Improved understanding and representation of these processes in Earth System Models is crucial for accurate projections of ecosystem risk and vulnerability.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Amber M. Holdsworth, Li Zhai, Youyu Lu, James R. Christian
Summary: Model projections of ocean circulation and biogeochemistry reveal the importance of high-frequency wind variability in freshwater distribution along the continental shelf of the Canadian Pacific Coast.
FRONTIERS IN MARINE SCIENCE
(2021)
Review
Environmental Sciences
Zouhair Lachkar, Marina Levy, Derara Hailegeorgis, Parvathi Vallivattathillam
Summary: The Arabian Sea is known for its highly productive marine ecosystem and the thickest oxygen minimum zone (OMZ) due to intense productivity and sluggish circulation. Recent evidence suggests a decline in oxygen levels in the northern Arabian Sea. However, future projections of the OMZ are uncertain due to inconsistencies in models. The limitations of current models and the sensitivity of oxygen supply and consumption to local and remote changes pose challenges in predicting future changes in the Arabian Sea OMZ.
FRONTIERS IN MARINE SCIENCE
(2023)
Review
Geochemistry & Geophysics
E. Di Lorenzo, T. Xu, Y. Zhao, M. Newman, A. Capotondi, S. Stevenson, D. J. Amaya, B. T. Anderson, R. Ding, J. C. Furtado, Y. Joh, G. Liguori, J. Lou, A. J. Miller, G. Navarra, N. Schneider, D. J. Vimont, S. Wu, H. Zhang
Summary: The modes of Pacific decadal-scale variability (PDV) represent the integration of atmospheric forcing by the ocean, resulting from shifts and changes in the climatological atmospheric circulation. Past analysis shows that PDV is driven by two fundamental low-frequency dynamical eigenmodes: the North Pacific-central Pacific (NP-CP) and Kuroshio-Oyashio Extension (KOE) modes. These modes highlight the importance of tropical-extratropical teleconnections in energizing and synchronizing PDV at the basin scale.
ANNUAL REVIEW OF MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Zhigang Cao, John M. M. Melack, Miao Liu, Tiit Kutser, Hongtao Duan, Ronghua Ma
Summary: A study of 2,550 Chinese lakes from 1984 to 2021 revealed that 68% of the lakes experienced a shift towards shorter visual wavelengths in color. Lakes in the Tibetan Plateau showed larger declines in wavelength compared to lakes in other areas. The factors associated with these color shifts varied in different ecoregions, with warmer and wetter climate influencing deep lakes in western China towards a blue color, while increased vegetation and reduced wind influenced shallow lakes in eastern China towards a green-cyan color. This study highlights the heterogeneous controls of climate and human activities on lake color patterns.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
C. E. Birch, L. S. Jackson, D. L. Finney, J. M. Marsham, R. A. Stratton, S. Tucker, S. Chapman, C. A. Senior, R. J. Keane, F. Guichard, E. J. Kendon
Summary: This study assesses the future change in dry and humid heatwaves in Africa using climate model simulations. The convective-scale simulation outperforms the parameterized simulation in representing humid heatwaves. Both simulations predict significant increases in the intensity, duration, and frequency of heatwaves by 2100. Dry heatwaves are associated with low rainfall and increased surface heating, while humid heatwaves are mainly controlled by increased humidity, rainfall, and evaporation. The convective-scale model shows a higher future change in humid heatwaves compared to the parameterized model.
JOURNAL OF CLIMATE
(2022)
Article
Geosciences, Multidisciplinary
Zengchao Hao, Fanghua Hao, Youlong Xia, Sifang Feng, Cheng Sun, Xuan Zhang, Yongshuo Fu, Ying Hao, Yu Zhang, Yu Meng
Summary: Compound droughts and hot events or extremes (CDHEs) have larger repercussions than individual extremes, and have attracted increased attention due to their disastrous impacts and increased risk under global warming. Observations show an overall increase in CDHEs in the past few decades, mainly resulting from an increase in hot extremes and likely attributable to anthropogenic influences. Future projections indicate an increase in CDHEs over most global land areas. CDHEs have amplified impacts compared to individual droughts or hot extremes on different sectors.
EARTH-SCIENCE REVIEWS
(2022)
Review
Geochemistry & Geophysics
Matthew W. Jones, John T. Abatzoglou, Sander Veraverbeke, Niels Andela, Gitta Lasslop, Matthias Forkel, Adam J. P. Smith, Chantelle Burton, Richard A. Betts, Guido R. van der Werf, Stephen Sitch, Josep G. Canadell, Cristina Santin, Crystal Kolden, Stefan H. Doerr, Corinne Le Quere
Summary: This article reviews the impacts of climate change on fire weather and the consequences for regional fire activity. It finds that fire weather controls the annual timing of fires in most world regions, and the frequency and extremity of fire weather have been globally pervasive due to climate change. Increases in burned area have also been seen in some forest regions, but other factors can override the relationship between burned area and fire weather.
REVIEWS OF GEOPHYSICS
(2022)
Article
Biodiversity Conservation
Veljko Perovic, Ratko Kadovic, Vladimir Durdevic, Dragana Pavlovic, Marija Pavlovic, Dragan Cakmak, Miroslava Mitrovic, Pavle Pavlovic
Summary: Land degradation and desertification (LDD) is a significant ecological challenge, with climate change being a major contributor. This study in Western Serbia found that degradation processes were primarily driven by anthropogenic factors and projected critical areas to expand significantly by 2100 due to predicted climate change impacts. These findings highlight the importance of addressing anthropogenic drivers and understanding the potential future impacts of climate change on LDD.
ECOLOGICAL INDICATORS
(2021)
Article
Forestry
Meng Wang, Chao Jiang, Osbert Jianxin Sun
Summary: The climate in Southwest China has been significantly warming over the past century, with significant fluctuations in precipitation but no clear trend. The study identified five major climate change types in the region, influenced significantly by vegetation and topography, suggesting a complex interplay of factors shaping climate variability.
JOURNAL OF FORESTRY RESEARCH
(2022)
Article
Ecology
Joseph M. Culp, Willem Goedkoop, Tom Christensen, Kirsten S. Christoffersen, Elena Fefilova, Petri Liljaniemi, Anna A. Novichkova, Jon S. Olafsson, Steinar Sandoy, Christian E. Zimmerman, Jennifer Lento
Summary: Climate change is predicted to have dramatic effects on Arctic freshwater ecosystems, but the lack of coordinated monitoring hinders the assessment of biodiversity changes. To address this, the Arctic Council established the Circumpolar Biodiversity Monitoring Program, which aims to provide a systematic approach to monitor Arctic freshwater biodiversity. This program has compiled data and provided the first assessment of trends in Arctic freshwater biodiversity, serving as an important resource for future monitoring and research.
FRESHWATER BIOLOGY
(2022)
Article
Environmental Sciences
D. L. Schumacher, M. Hauser, S. Seneviratne
Summary: In late June 2021, a heatwave with unusually high temperatures occurred in western North America, particularly in the Pacific Northwest. The study finds that the physical drivers of this event are the anticyclonic circulation aloft, which converts potential energy into sensible heat, and the establishment of deep atmospheric boundary layers facilitated by mountainous terrain and dry soils. Anomalous soil moisture also contributes to the temperature rise. The research suggests that similar large-scale atmospheric circulation driven by enhanced thermodynamic drivers could result in even more extreme temperatures, particularly in a warmer climate.
Article
Environmental Sciences
T. Ito, Y. Takano, C. Deutsch, M. C. Long
Summary: Ocean deoxygenation caused by global warming is a significant issue that has made progress in theoretical understanding, but many questions remain unanswered. The changes in oxygen in the tropical thermocline are still not well understood, with differing projections among models. The role of ocean mixing in the mean state and response to warming has been examined, showing that it has a significant impact on the spatial patterns of oxygen loss.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Review
Geosciences, Multidisciplinary
Andreas Oschlies, Peter Brandt, Lothar Stramma, Sunke Schmidtko
Review
Geochemistry & Geophysics
M. Vernet, W. Geibert, M. Hoppema, P. J. Brown, C. Haas, H. H. Hellmer, W. Jokat, L. Jullion, M. Mazloff, D. C. E. Bakker, J. A. Brearley, P. Croot, T. Hattermann, J. Hauck, C. -D. Hillenbrand, C. J. M. Hoppe, O. Huhn, B. P. Koch, O. J. Lechtenfeld, M. P. Meredith, A. C. Naveira Garabato, E-M. Noethig, I. Peeken, M. M. Rutgers van der Loeff, S. Schmidtko, M. Schroeder, V. H. Strass, S. Torres-Valdes, A. Verdy
REVIEWS OF GEOPHYSICS
(2019)
Article
Geosciences, Multidisciplinary
Joke F. Luebbecke, Daniel Rudloff, Lothar Stramma
GEOPHYSICAL RESEARCH LETTERS
(2019)
Article
Oceanography
Franz Philip Tuchen, Joke F. Luebbecke, Sunke Schmidtko, Rebecca Hummels, Claus W. Boening
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2019)
Article
Multidisciplinary Sciences
Jean-Baptiste Sallee, Violaine Pellichero, Camille Akhoudas, Etienne Pauthenet, Lucie Vignes, Sunke Schmidtko, Alberto Naveira Garabato, Peter Sutherland, Mikael Kuusela
Summary: The study shows that from 1970 to 2018, the density contrast across the base of the mixed layer in the world ocean increased and the mixed layer itself became deeper. The changes indicate a possible shift in the mixed layer during an era of global climate change, although important uncertainties remain.
Article
Geosciences, Multidisciplinary
Peter Brandt, Johannes Hahn, Sunke Schmidtko, Franz Philip Tuchen, Robert Kopte, Rainer Kiko, Bernard Bourles, Rena Czeschel, Marcus Dengler
Summary: Based on long-term moored observations, the Equatorial Undercurrent (EUC) in the tropical Atlantic has strengthened by more than 20% from 2008 to 2018, countering deoxygenation caused by climate warming. The changes in oxygen concentrations are associated with multidecadal variability, impacting the habitat of tropical pelagic fish.
Correction
Multidisciplinary Sciences
Jean-Baptiste Sallee, Violaine Pellichero, Camille Akhoudas, Etienne Pauthenet, Lucie Vignes, Sunke Schmidtko, Alberto Naveira Garabato, Peter Sutherland, Mikael Kuusela
Article
Meteorology & Atmospheric Sciences
Lothar Stramma, Sunke Schmidtko
Summary: The study reveals a decrease in oxygen in the intermediate-depth low-oxygen zones (300 to 700 m) in selected tropical areas, along with impacts on temperature, salinity, and nutrient time series in the upper-ocean layer. Nutrient trends show more variability between ocean areas than oxygen trends, indicating a dependence on local drivers in addition to a global trend.
Article
Ecology
Lothar Stramma, Sunke Schmidtko, Steven J. Bograd, Tsuneo Ono, Tetjana Ross, Daisuke Sasano, Frank A. Whitney
Article
Meteorology & Atmospheric Sciences
Juergen Fischer, Johannes Karstensen, Marilena Oltmanns, Sunke Schmidtko
Article
Meteorology & Atmospheric Sciences
Rena Czeschel, Florian Schuette, Robert A. Weller, Lothar Stramma
