Results 11 to 20 of about 59,987 (246)

Sea Ice Loss leads to regime shifts in the arctic biological pump [PDF]

Nature Communications
The Arctic Ocean has undergone accelerated warming and a marked decline in sea ice over recent decades. Yet, the response of the biological pump—a critical mechanism for atmospheric carbon sequestration—remains poorly understood.
Ming Wu, Yuhan Hu, Chengfeng Le, Fanyu Lin, Tingyu Gu, Peifang Deng, Zong-Pei Jiang, Kui Wang, Yihui Chen, Wei-Lei Wang, Musheng Lan, Ruibo Lei, Jianfeng He, Di Qi, Zhangxian Ouyang, John C. Lehrter, Chuanmin Hu, Wei-Jun Cai   +17 more
doaj   +2 more sources

Complexity in biogeochemical models: consequences for the biological carbon pump [PDF]

Biogeosciences
Ocean biogeochemical models underpin projections of future marine ecosystem change, including anticipated shifts in the biological carbon pump (BCP) and broader biogeochemical cycles. However, their outputs remain highly sensitive to model complexity and
J. Rogerson, A. Tagliabue, A. Nguyen, M. Vichi, M. Vichi, L. Wrightson, P. Anugerahanti, P. Anugerahanti, O. Aumont, M. Gehlen   +9 more
doaj   +3 more sources

Effects of Eddy‐Driven Subduction on Ocean Biological Carbon Pump [PDF]

Global Biogeochemical Cycles, 2019
Estimates of the ocean biological carbon pump are limited by uncertainties in the magnitude of the physical injection of particulate and dissolved organic carbon to the ocean interior. A major challenge is to evaluate the contribution of these physical pumps at small spatial and temporal scales (<100 km and <1 month).
Laure Resplandy, Dennis Mcgillicuddy, Marina Levy   +2 more
exaly   +4 more sources

Ocean biological carbon pump: The evolution and prospects

Journal of CO2 Utilization
As one of the primary pathways for atmospheric CO2 sequestration, the marine ecosystem absorbs approximately the same amount of CO2 as terrestrial ecosystems. This process is mainly driven by the biological activities of marine organisms, which help move
Guangyu Xu, Zhixin Liu, Feng Bao, Wenfeng Zheng   +3 more
doaj   +2 more sources

Robust detection of marine life with label-free image feature learning and probability calibration

Machine Learning: Science and Technology, 2023
Advances in in situ marine life imaging have significantly increased the size and quality of available datasets, but automatic image analysis has not kept pace.
Tobias Schanz, Klas Ove Möller, Saskia Rühl, David S Greenberg   +3 more
doaj   +1 more source

Evaluating the biological pump efficiency of the Last Glacial Maximum ocean using δ¹³C [PDF]

Climate of the Past, 2021
Although both physical and biological marine changes are required to explain the 100 ppm lower atmospheric pCO2 of the Last Glacial Maximum (LGM, ∼21 ka) as compared to preindustrial (PI) times, their exact contributions are debated.
A. L. Morée, J. Schwinger, U. S. Ninnemann, A. Jeltsch-Thömmes, I. Bethke, C. Heinze   +5 more
doaj   +1 more source

COMMENTARY | Understanding the Role of the Biological Pump in the Global Carbon Cycle: An Imperative for Ocean Science [PDF]

Oceanography, 2014
Anthropogenically driven climate change will rapidly become Earth's dominant transformative influence in the coming decades. The oceanic biological pump—the complex suite of processes that results in the transfer of particulate and dissolved organic ...
Susumu Honjo, Timothy I. Eglinton, Craig D. Taylor, Kevin M. Ulmer, Stefan Sievert, Astrid Bracher , Christopher German, Virginia Edgcomb, Roger Francois, M. Debora Iglesias-Rodriguez, Benjamin Van Mooy, Daniel J. Repeta   +11 more
doaj   +1 more source

Carbon sequestration by multiple biological pump pathways in a coastal upwelling biome

Nature Communications, 2023
Multiple processes transport carbon into the deep ocean as part of the biological carbon pump, leading to long-term carbon sequestration. However, our ability to predict future changes in these processes is hampered by the absence of studies that have ...
Michael R. Stukel, John P. Irving, Thomas B. Kelly, Mark D. Ohman, Christian K. Fender, Natalia Yingling   +5 more
doaj   +1 more source

The influence of the ocean circulation state on ocean carbon storage and CO₂ drawdown potential in an Earth system model [PDF]

Biogeosciences, 2018
During the four most recent glacial cycles, atmospheric CO2 during glacial maxima has been lowered by about 90–100 ppm with respect to interglacials. There is widespread consensus that most of this carbon was partitioned in the ocean.
M. Ödalen, J. Nycander, K. I. C. Oliver, L. Brodeau, L. Brodeau, A. Ridgwell, A. Ridgwell   +6 more
doaj   +1 more source

Precessional pacing of tropical ocean carbon export during the Late Cretaceous [PDF]

Climate of the Past, 2022
The marine biological carbon pump, which exports organic carbon out of the surface ocean, plays an essential role in sequestering carbon from the atmosphere, thus impacting climate and affecting marine ecosystems.
J.-E. Kim, T. Westerhold, L. Alegret, A. J. Drury, U. Röhl, E. M. Griffith   +5 more
doaj   +1 more source