Results 11 to 20 of about 224 (112)

The Ocean's Biological Pump: In Situ Oxygen Measurements in the Subtropical Oceans

Geophysical Research Letters, 2022
The magnitude and distribution of the ocean's biological pump (the downward flux of organic carbon (OC) from the ocean surface) influences the pCO2 of the atmosphere and the O2 content of the deep sea, but has not been well quantified.
Steven Emerson, Bo Yang
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The link between surface and sub-surface chlorophyll-a in the centre of the Atlantic subtropical gyres: a comparison of observations and models

Frontiers in Marine Science, 2023
Satellite observations have given us a clear idea of the changes in chlorophyll in the surface ocean on both a seasonal and interannual basis, but repeated observations at depth are much rarer. The permanently-stratified subtropical gyres in the Atlantic
Graham D. Quartly, Jim Aiken, Robert J. W. Brewin, Andrew Yool   +3 more
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Inertia‐induced accumulation of flotsam in the subtropical gyres [PDF]

Geophysical Research Letters, 2016
AbstractRecent surveys of marine plastic debris density have revealed high levels in the center of the subtropical gyres. Earlier studies have argued that the formation of great garbage patches is due to Ekman convergence in such regions. In this work we report a tendency so far overlooked of drogued and undrogued drifters to accumulate distinctly over
F. J. Beron‐Vera, M. J. Olascoaga, R. Lumpkin   +2 more
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Pollutants in Plastics within the North Pacific Subtropical Gyre [PDF]

Environmental Science & Technology, 2017
Here we report concentrations of pollutants in floating plastics from the North Pacific accumulation zone (NPAC). We compared chemical concentrations in plastics of different types and sizes, assessed ocean plastic potential risks using sediment quality criteria, and discussed the implications of our findings for bioaccumulation.
Qiqing Chen, Julia Reisser, Serena Cunsolo, Christiaan Kwadijk, Michiel Kotterman, Maira Proietti, Boyan Slat, Francesco F. Ferrari, Anna Schwarz, Aurore Levivier, Daqiang Yin, Henner Hollert, Albert A. Koelmans   +12 more
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On wind-driven energetics of subtropical gyres [PDF]

, 2020
<p>The flow of energy in the wind-driven circulation is examined in a <br>combined theoretical and numerical study. Based on a multiple scales <br>analysis of the ocean interior, we find the mesoscale field is strongly <br>affected by the ventilated ...
William K. Dewar, Quentin Jamet, Bruno Deremble, Nicolas Wienders   +3 more
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The Contemporary Challenge of the Sea: Science, Society, and Sustainability [PDF]

Oceanography, 2014
The ocean covers nearly 71% of the surface of our planet, but it is still largely unexplored despite its fundamental roles in global food production and climate regulation.
David M. Karl
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High concentrations of floating neustonic life in the plastic-rich North Pacific Garbage Patch.

PLoS Biology, 2023
Floating life (obligate neuston) is a core component of the ocean surface food web. However, only 1 region of high neustonic abundance is known so far, the Sargasso Sea in the Subtropical North Atlantic gyre, where floating life provides critical habitat
Fiona Chong, Matthew Spencer, Nikolai Maximenko, Jan Hafner, Andrew C McWhirter, Rebecca R Helm   +5 more
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Variability and Trends of the South Atlantic Subtropical Gyre [PDF]

Journal of Geophysical Research: Oceans, 2021
AbstractPrevious studies have suggested that the South Atlantic subtropical gyre has been expanding, shifting poleward, and intensifying. We investigate these possibilities from an observational standpoint by analyzing the seasonal and interannual variability, and the long‐term trends, in sea surface height, steric height, and ocean mass.
Kimberley L. Drouin, M. Susan Lozier, William E. Johns   +2 more
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Effects of paleogeographic changes and CO2 variability on northern mid-latitudinal temperature gradients in the Cretaceous

Nature Communications, 2023
The Cretaceous ‘greenhouse’ period (~145 to ~66 million years ago, Ma) in Earth’s history is relatively well documented by multiple paleoproxy records, which indicate that the meridional sea surface temperature (SST) gradient increased (non-monotonically)
Kaushal Gianchandani, Sagi Maor, Ori Adam, Alexander Farnsworth, Hezi Gildor, Daniel J. Lunt, Nathan Paldor   +6 more
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Contribution of Wind Speed and Sea-Air Humidity Difference to the Latent Heat Flux-SST Relationship

Ocean-Land-Atmosphere Research, 2022
This study investigates contributions of wind speed and sea-air humidity difference (dq) terms to the seasonal change and time scale dependence in the relationship between surface latent heat flux (LHF) and sea surface temperature (SST) using daily data.
Xiaoshan Sun, Renguang Wu
doaj   +1 more source