Article
Multidisciplinary Sciences
Chengyuan Pang, Maxim Nikurashin, Beatriz Pena-Molino, Bernadette M. Sloyan
Summary: In addition to local tidal mixing, remotely generated planetary waves and eddies also contribute to the mixing in the upper ocean of the Indonesian Seas. The intense mixing observed in this region plays a crucial role in the climate of the Indonesian Seas by cooling the surface temperature and affecting atmospheric convection. The energy generated in the Indian and Pacific Oceans is transported to the Indonesian Seas by planetary waves and eddies, and it is estimated that a significant amount of energy enters the region through the straits.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
K. McMonigal, Sarah M. Larson
Summary: Indian Ocean meridional heat transport (MHTIO) has significant impacts on climate and ecosystem. This study finds that internally generated Indian Ocean Dipole (IOD) does not drive variability in MHTIO, but internal atmospheric variability does. There is little evidence for decadal or multidecadal variability in MHTIO, suggesting it may be a region where anthropogenic trend rises above internal variability sooner.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Zhang Yu, Zhang Yan-Yan, Xu Dan-Ya, Chen Chang-Sheng, Shen Xin-Yi, Hu Song, Chang Liang, Zhou Xiang-Qian, Feng Gui-Ping
Summary: This study used AMSR-E satellite data to investigate the variations of polynya in the East Siberian Sea and Chukchi Sea, and their impacts from wind stress and ocean heat transport. The study found that sea ice thickness algorithms at 6.25 km and 12.5 km had larger polynya areas compared to sea ice concentration algorithms, with wind stress having a greater impact on the polynya area in the East Siberian Sea and wind speed having a greater impact in the Chukchi Sea.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2021)
Article
Astronomy & Astrophysics
J. R. Fuentes, Evan H. Anders, Andrew Cumming, Bradley W. Hindman
Summary: Recent measurements show that Jupiter and Saturn have maintained their primordial composition gradients since their formation. One possible explanation is the presence of a double-diffusive staircase that inhibits mixing in the deeper layers. However, hydrodynamic simulations suggest that these staircases are not long-lasting. This study proposes that planetary rotation could be another factor for the longevity of these gradients.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Geochemistry & Geophysics
Emily R. Newsom, Andrew F. Thompson, Jess F. Adkins, Eric D. Galbraith
Summary: The modern Indo-Pacific oceans absorb more heat than they release, with the resulting surplus energy being transported by ocean circulation to other basins. Changes in ocean heat transport between basins between different climate states affect global deep water formation and overturning circulation, with asymmetrical increases in poleward heat transport and high-latitude heat loss observed.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Ryuichiro Shinohara, Shin-Ichiro S. Matsuzaki, Mirai Watanabe, Megumi Nakagawa, Hajime Yoshida, Ayato Kohzu
Summary: We examined the factors of warm air temperatures, high solar radiation, and weak wind speeds in causing hypoxia in a shallow lake during a heat wave. By simulating dissolved oxygen concentrations in the lake's bottom water, we compared the concentrations in 2022 with the average concentrations of the past 30 years. Our findings showed that wind speeds had the greatest impact on hypoxia occurrence. Insufficient convection led to hypoxia when wind speeds were low, but there was no hypoxia when the wind speed matched the 30-year average. However, if solar radiation and air temperatures matched their respective 30-year averages, hypoxia did not occur even with low wind speeds. Therefore, we concluded that the combination of weak winds and either high solar radiation or air temperatures induced hypoxia during the 2022 heat wave.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Thermodynamics
Bin Li, Hang Xu, Yong-Juan Song, Hong-Liang Zhang, Wei-Wei Wang, Fu-Yun Zhao
Summary: This paper presents a numerical investigation on the heat and moisture transport and resonance phenomena in enclosures packed with discrete porous media. The results show that reducing the permeability of the porous medium and increasing the ratio of Richardson number to floating force can enhance heat and mass transfer rates in a vertical enclosure. In an inclined enclosure, the effect of buoyancy and inclination angle exhibits a centrally symmetric distribution on heat and mass transfer processes and rates. Resonance phenomena occur in a mixed convection system with a dense porous media and cooperative heat and mass buoyancy force ratio.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Feng Li, Paul A. Newman, Darryn W. Waugh
Summary: This article investigates the impacts of stratospheric ozone recovery on Southern Ocean temperature and heat content. The results show that ozone recovery leads to a decrease in temperature and heat content in the Southern Ocean, which is caused by the weakening of ocean circulation and heat transport.
GEOPHYSICAL RESEARCH LETTERS
(2023)
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)
Article
Mechanics
Shashwat Bhattacharya, Mahendra K. Verma, Arnab Bhattacharya
Summary: A multivariate regression model and a neural network model were developed in this paper to predict the Reynolds number and Nusselt number in turbulent thermal convection. By comparing with earlier models, it was found that the machine-learning models in this work provided the best match with the experimental and numerical results.
Article
Environmental Sciences
Joshua Kousal, Kevin J. E. Walsh, Zhenya Song, Qingxiang Liu, Fangli Qiao, Alexander V. V. Babanin
Summary: Climate models do not explicitly consider smaller scale ocean surface wave processes, but waves are closely related to many large-scale phenomena. Waves enhance mixing in the upper ocean and accelerate the ocean's response to atmospheric changes.
Article
Meteorology & Atmospheric Sciences
R. M. Holmes, J. D. Zika, S. M. Griffies, A. McC. Hogg, A. E. Kiss, M. H. England
Summary: The study introduces a water mass transformation-based method for quantifying numerical mixing in ocean models, revealing that it is prominent in the tropical thermocline and sensitive to the presence of explicit neutral diffusion at colder temperatures. Additionally, the research shows that under certain conditions numerical mixing can be reduced by almost 35%.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Dapeng Li, Ping Chang, Sanjiv Ramachandran, Zhao Jing, Qiuying Zhang, Jaison Kurian, Abishek Gopal, Haiyuan Yang
Summary: The study calculates the vertical eddy heat flux induced by Ekman pumping using two formulations, finding similar patterns in ocean frontal regions with strong upward heat flux. The Stern-Ekman pumping induced eddy heat flux accounts for 23% and 12% of the total vertical eddy heat flux.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Jake Aylmer, David Ferreira, Daniel Feltham
Summary: Understanding the impact of ocean heat transport on sea ice extent can help reduce uncertainties in long-term climate projections. In this study, researchers found that the mechanisms of ocean heat transport's impact on sea ice are different in the northern and southern hemispheres. In the northern hemisphere, increased ocean heat transport leads to increased ocean heat convergence along the Atlantic sea ice edge and a reduction in pan-Arctic sea ice thickness. In the southern hemisphere, increased ocean heat transport results in basal melt and sea ice loss.
Article
Geosciences, Multidisciplinary
Erica Madonna, Anne Britt Sando
Summary: The ocean heat transport from the North Atlantic to the Barents Sea has an impact on the sea ice extent and energy budget in the Arctic. However, there are significant differences in ocean heat transport between the fifth and sixth phases of the Coupled Model Intercomparison Project. While both model generations show variations in mean volume transports, the CMIP6 models have more realistic temperatures and heat transports. The variability of heat and volume transports is influenced by wind forcing, but with different magnitudes in different models.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Ryan Abernathey, David Ferreira
GEOPHYSICAL RESEARCH LETTERS
(2015)
Article
Geosciences, Multidisciplinary
Markus Huber, Remi Tailleux, David Ferreira, Till Kuhlbrodt, Jonathan Gregory
GEOPHYSICAL RESEARCH LETTERS
(2015)
Article
Meteorology & Atmospheric Sciences
David Ferreira, John Marshall, Cecilia M. Bitz, Susan Solomon, Alan Plumb
JOURNAL OF CLIMATE
(2015)
Article
Geosciences, Multidisciplinary
Raffaele Ferrari, Sophia T. Merrifield, John R. Taylor
JOURNAL OF MARINE SYSTEMS
(2015)
Article
Oceanography
Louis-Philippe Nadeau, Raffaele Ferrari
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2015)
Article
Oceanography
E. Kunze, J. M. Klymak, R. -C. Lien, R. Ferrari, C. M. Lee, M. A. Sundermeyer, L. Goodman
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2015)
Article
Oceanography
David Ferreira, John Marshall
Article
Multidisciplinary Sciences
Joern Callies, Raffaele Ferrari, Jody M. Klymak, Jonathan Gula
NATURE COMMUNICATIONS
(2015)
Article
Meteorology & Atmospheric Sciences
Yavor Kostov, John Marshall, Ute Hausmann, Kyle C. Armour, David Ferreira, Marika M. Holland
Article
Meteorology & Atmospheric Sciences
J. Marshall, A. Donohoe, D. Ferreira, D. McGee
Article
Geochemistry & Geophysics
David McGee, Aaron Donohoe, John Marshall, David Ferreira
EARTH AND PLANETARY SCIENCE LETTERS
(2014)
Article
Oceanography
Ross Tulloch, Raffaele Ferrari, Oliver Jahn, Andreas Klocker, Joseph LaCasce, James R. Ledwell, John Marshall, Marie-Jose Messias, Kevin Speer, Andrew Watson
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2014)
Article
Oceanography
Maxim Nikurashin, Raffaele Ferrari, Nicolas Grisouard, Kurt Polzin
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2014)
Article
Meteorology & Atmospheric Sciences
Malte Jansen, Raffaele Ferrari
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2015)
Article
Meteorology & Atmospheric Sciences
G. Forget, D. Ferreira, X. Liang
Review
Meteorology & Atmospheric Sciences
Wei Zhang, Yu Sun, Yapeng Wu, Junyu Dong, Xiaojiang Song, Zhiyi Gao, Renbo Pang, Boyu Guoan
Summary: This study employed a spatiotemporal deep-learning method to correct biases in numerical ocean wave forecasts. By using a correction model driven by both wave and wind fields and a novel pixel-switch loss function, the corrected results performed well in different seasons and improved the accuracy of the original forecasts.