Sentences with phrase «deep ocean circulation»

Over the short term, that works to prevent changes in deep ocean circulation.

Some of this may affect surface waters but it has greater implications for deep ocean circulation.

Scientists believe that the different pattern of deep ocean circulation was responsible for the elevated temperatures 3 million years ago when the carbon dioxide level in the atmosphere was arguably what it is now and the temperature was 4 degree Fahrenheit higher.

A recent study investigates the drivers of changes in deep ocean circulation across a range of modern and Last Glacial Maximum (~ 21000 years ago) climate modeling simulations, revealing biases in Antarctic sea ice formation.

A University of Utah study suggests something amazing: Periodic changes in winds 15 to 30 miles high in the stratosphere influence the seas by striking a vulnerable «Achilles heel» in the North Atlantic and changing mile - deep ocean circulation patterns, which in turn affect Earth's climate.

«We argue that it was the establishment of the modern deep ocean circulation — the ocean conveyor — about 2.7 million years ago, and not a major change in carbon dioxide concentration in the atmosphere that triggered an expansion of the ice sheets in the northern hemisphere,» says Stella Woodard, lead author and a post-doctoral researcher in the Department of Marine and Coastal Sciences.

«This is the first time we could see how deep ocean circulation processes potentially transport materials from hydrothermal vents,» Mitarai said.

This study specifically considers the role of Antarctic sea ice in shaping deep ocean circulation and stratification, by driving surface buoyancy loss associated with brine rejection (when sea ice forms, salt is pushed into the surrounding seawater, making it denser).

For example, some studies have used «slab» ocean models that can't depict deep ocean circulation.

Climate modeling groups have also been experimenting with ways to use the predictability of deeper ocean circulations (where internal variations can persist for up to a decade), but results have been mixed at best.

To better understand these discrepancies, a recent study published in Geophysical Research Letters investigates the drivers of changes in deep ocean circulation across a range of modern and Last Glacial Maximum (LGM, ~ 21000 years ago) climate simulations from the latest Paleoclimate Modelling Intercomparison Project (PMIP).

An unprecedented analysis of North Pacific ocean circulation over the past 1.2 million years has found that sea ice formation in coastal regions is a key driver of deep ocean circulation, influencing climate on regional and global scales.

Pliocene (3.2 — 2.4 Ma) ostracode faunal cycles and deep ocean circulation, North Atlantic Ocean.

«Climate Variability and Deep Ocean Circulation: Evidence from the North Atlantic.»

Im mostly interested in shorter term variability (daily / intraseasonal / interannual), so I don't need a deep ocean circulation.

Recent research at Reading University and elsewhere indicates a slowing of a deep ocean circulation system in the North Atlantic, known as the Atlantic Meridional Overturning circulation.

Surface currents driven by global wind patterns extending down just a few hundred meters and deep ocean circulation can take thousands of years to go full circle.

These will allow researchers to investigate specific aspects of the climate system, from clouds to deep ocean circulation to an interactive carbon cycle.

These measurements could allow climatologists to determine the role of the solar and radiative forcings on the increase in heat content of the late 20th century relative to that of the deep ocean circulation.

Climate modeling groups have also been experimenting with ways to use the predictability of deeper ocean circulations (where internal variations can persist for up to a decade), but results have been mixed at best.

Unlike Charney climate sensitivity, which is related to the strength of feedbacks involving short timescale climate processes such as those involving clouds and water vapor, Earth System sensitivity also integrates feedbacks involving long timescale changes in the cryosphere, terrestrial vegetation, and deep ocean circulation.

State - of - the - art GCMs are coupled atmosphere - ocean models, i.e. a model simulating surface and deep ocean circulations is «coupled» to an atmospheric GCM.

To understand this one must learn a bit about the deep ocean circulation.

What did they think 60 years ago about the rate of deep ocean circulation, was anything said about what they thought on temperature changes in the abyss?

It then sinks to the bottom of the ocean where it propels the deep ocean circulation system before eventually welling up and warming again in the Tropics, some 1,000 years later.

1982 Detmar Schnitker, «Climate Variability and Deep Ocean Circulation: Evidence from the North Atlantic.»