Results 31 to 40 of about 195,443 (302)

Degradation pathways for organic matter of terrestrial origin are widespread and expressed in Arctic Ocean microbiomes

open access: yesMicrobiome, 2022
Background The Arctic Ocean receives massive freshwater input and a correspondingly large amount of humic-rich organic matter of terrestrial origin. Global warming, permafrost melt, and a changing hydrological cycle will contribute to an intensification ...
Thomas Grevesse   +3 more
doaj   +1 more source

Unprecedented decline of Arctic sea ice outflow in 2018

open access: yesNature Communications, 2022
Fram Strait is the major gateway connecting the Arctic Ocean and North Atlantic Ocean, where nearly 90% of the sea ice export from the Arctic Ocean takes place.
Hiroshi Sumata   +4 more
doaj   +1 more source

Lasting impact of winds on Arctic sea ice through the ocean's memory [PDF]

open access: yesThe Cryosphere, 2021
In this paper we studied the impact of winds on Arctic sea ice through the ocean's memory by using numerical simulations. We found that the changes in halosteric height induced by wind perturbations can significantly affect the Arctic sea ice drift ...
Q. Wang   +7 more
doaj   +1 more source

Disentangling the Coupled Atmosphere‐Ocean‐Ice Interactions Driving Arctic Sea Ice Response to CO2 Increases

open access: yesJournal of Advances in Modeling Earth Systems, 2020
A novel decomposition of the ocean heat energy that contributes to sea ice melt and growth (ocean‐ice and frazil heat) into components that are driven by surface heat flux and ocean circulation changes is used to isolate the evolving roles of the ...
Oluwayemi A. Garuba   +3 more
doaj   +1 more source

Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation [PDF]

open access: yes, 2005
Analyses of a 500-yr control integration with the non-flux-adjusted coupled atmosphere–sea ice–ocean model ECHAM5/Max-Planck-Institute Ocean Model (MPI-OM) show pronounced multidecadal fluctuations of the Atlantic overturning circulation and the ...
Aagaard   +63 more
core   +1 more source

The Arctic Ocean's Beaufort Gyre

open access: yesAnnual Review of Marine Science, 2023
The Arctic Ocean's Beaufort Gyre is a dominant feature of the Arctic system, a prominent indicator of climate change, and possibly a control factor for high-latitude climate. The state of knowledge of the wind-driven Beaufort Gyre is reviewed here, including its forcing, relationship to sea-ice cover, source waters, circulation, and energetics.
Timmermans, Mary-Louise, Toole, John M.
openaire   +3 more sources

A model study of the first ventilated regime of the Arctic Ocean during the early Miocene [PDF]

open access: yesPolar Research, 2012
The tectonic opening of Fram Strait during the Neogene was a significant geological event that transferred the Arctic Ocean from a poorly ventilated enclosed basin, with weak exchange with the North Atlantic, to a fully ventilated “ocean stage ...
Bijoy Thompson   +4 more
doaj   +1 more source

A Synthesis of the Upper Arctic Ocean Circulation During 2000–2019: Understanding the Roles of Wind Forcing and Sea Ice Decline

open access: yesFrontiers in Marine Science, 2022
Major changes have occurred in the Arctic Ocean during 2000–2019, including the unprecedented spin-up of the Beaufort Gyre and the emergence of Arctic Atlantification in the eastern Eurasian Basin.
Qiang Wang   +4 more
doaj   +1 more source

Pliocene and Pleistocene chronostratigraphy and paleoenvironment of the Central Arctic Ocean, using deep water agglutinated foraminifera [PDF]

open access: yes, 1998
Deep-water agglutinated foraminifera (DWAF) were studied from Cores PS2177-5, PS2200-5, PS2212-3 and PS2185-6; from the R/V POLARSTERN ARK-VIII/3 Cruise in the central Arctic Ocean.
Evans, J.R., Kaminski, M.A.
core   +1 more source

Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere

open access: yesNature Communications, 2022
Arctic warming thaws permafrost, leading to enhanced soil mercury transport to the Arctic Ocean. Mercury isotope signatures in arctic rivers, ocean and atmosphere suggest that permafrost mercury is buried in marine sediment and not emitted to the global ...
Beatriz Ferreira Araujo   +22 more
doaj   +1 more source

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