Sentences with phrase «how ocean circulation changed»

To determine how ocean circulation changed, the scientists measured three types of chemical tracers.

Not exact matches

«The Atlantic Ocean surface circulation, and however that changes, has implications for how the rainfall changes on continents.»

Greatly improved computer models began to suggest how such jumps could happen, for example through a change in the circulation of ocean currents.

He believes that no one has thought of combining the two theories before because it's not an intuitive idea to look at how the effects of changing patterns of ocean circulation, which occur on time scales of thousands of years, would effect global silicate weathering, which in turn controls global climate on time scales of 100s of thousands of years.

And what we see is both how complex climate changes can be and how profound an effect changing patterns of ocean circulation can have on global climate states, if looked at on a geological time scale.»

Its measurements of ocean saltiness will also help scientists understand how changes in salinity affect the deep currents that drive ocean circulation.

Those three papers explore the global ocean microbiome and plankton interaction networks, as well as how plankton communities change across a key ocean circulation choke point off South Africa.

They were Jorge Sarmiento, an oceanographer at Princeton University who constructs ocean - circulation models that calculate how much atmospheric carbon dioxide eventually goes into the world's oceans; Eileen Claussen, executive director of the Pew Center for Global Climate Change in Washington, D.C.; and David Keith, a physicist with the University of Calgary in Alberta who designs technological solutions to the global warming problem.

However, Khazendar and Scheuchl said, researchers need more information on the shape of the bedrock and seafloor beneath the ice, as well as more data on ocean circulation and temperatures, to be able to better project how much ice these glaciers will contribute to the ocean in a changing climate.

In the paper Gray makes many extravagant claims about how supposed changes in the THC accounted for various 20th century climate changes («I judge our present global ocean circulation conditions to be similar to that of the period of the early 1940s when the globe had shown great warming since 1910, and there was concern as to whether this 1910 - 1940 global warming would continue.

Other research is looking into questions about how seamount populations change in response to climate - induced shifts in ocean circulation and whether habitats disturbed by human activity can recover.

That matters because the trickiest part of global climate models appears to be how they handle ocean - atmosphere interactions, and I really have no idea how well they link changes in local wind - driven upwelling to the net thermohaline circulation.

There is so little understanding about how the ocean parses its response to forcings by 1) suppressing (local convective scale) deep water formation where excessive warming patterns are changed, 2) enhancing (local convective scale) deep water formation where the changed excessive warming patterns are co-located with increased evaporation and increased salinity, and 3) shifting favored deep water formation locations as a result of a) shifted patterns of enhanced warming, b) shifted patterns of enhanced salinity and c) shifted patterns of circulation which transport these enhanced ocean features to critically altered destinations.

I clearly see that the change in surface temperature and TOA radiative forcing simulated by the model depends upon the model complexity, for example, how the ocean circulations are represented.

The improved computer models also began to suggest how such jumps could happen, for example through a change in the circulation of ocean currents.

And how much of the hiatus is cloud caused in step changes in ocean and atmospheric circulation.

Francis, who wasn't involved with either study, is one of the main proponents of an idea that by altering how much heat the ocean lets out, sea ice melt and Arctic warming can also change atmospheric circulation patterns, in particular by making the jet stream form larger peaks, or highs, and troughs, or lows.

The aim of the C - SIDE working group is to reconstruct changes in sea - ice extent in the Southern Ocean for the past 130,000 years, reconstruct how sea - ice cover responded to global cooling as the Earth entered a glacial cycle, and to better understand how sea - ice cover may have influenced nutrient cycling, ocean productivity, air - sea gas exchange, and circulation dynaOcean for the past 130,000 years, reconstruct how sea - ice cover responded to global cooling as the Earth entered a glacial cycle, and to better understand how sea - ice cover may have influenced nutrient cycling, ocean productivity, air - sea gas exchange, and circulation dynaocean productivity, air - sea gas exchange, and circulation dynamics.

A new study helps clarify how past and future coastal sea level changes are related to local winds and large - scale ocean circulation.

A new study, published in Journal of Geophysical Research - Oceans, helps clarify how past and future coastal sea level changes are related to local winds and large - scale ocean circulation.

The issue is that differences in mineral content, salinity, density, and temperature all affect how the ocean reacts to, and drives, changes in weather patterns, climate variations over years or decades, ocean current circulation, etc..

I was based in the Meteorology Department, but my work focused on understanding the large - scale circulation of the ocean and how it responds to change.

To test how well a climate model predicts possible changes in ocean circulation due to climate change, GISS scientists have simulated the effects of a massive flood of fresh water some 8000 years ago.

The role of the time accurate models is to describe, what happens to atmospheric and ocean circulation and how clouds change.

Lamont's Ryan Abernathey and Richard Seager are studying how changes in the ocean cause sea surface temperature to vary, and how these anomalies drive changes in atmospheric circulation to create extreme weather events.

How atmospheric and ocean circulation responds to various changes in forcing would need to be detailed if someone wanted to «prove» anthropogenic forcing is involved other than a minor increase in the average surface temperature.

Scientists extract core samples from living corals by scuba diving and collecting a sample from the coral skeleton; geochemical analyses of these samples reveals how ocean temperature, circulation, and salinity change over time.

It's also «UNKNOWN» how much of the historical temperature changes have been due to GTGs, and how much has been due to orbital forcing, ie, increases in solar radiation, or perhaps long - term shifts in ocean circulation.»

The most likely candidate for that climatic variable force that comes to mind is solar variability (because I can think of no other force that can change or reverse in a different trend often enough, and quick enough to account for the historical climatic record) and the primary and secondary effects associated with this solar variability which I feel are a significant player in glacial / inter-glacial cycles, counter climatic trends when taken into consideration with these factors which are, land / ocean arrangements, mean land elevation, mean magnetic field strength of the earth (magnetic excursions), the mean state of the climate (average global temperature), the initial state of the earth's climate (how close to interglacial - glacial threshold condition it is) the state of random terrestrial (violent volcanic eruption, or a random atmospheric circulation / oceanic pattern that feeds upon itself possibly) / extra terrestrial events (super-nova in vicinity of earth or a random impact) along with Milankovitch Cycles.

This is the first extensive survey of one of these fjords that shows us how these warm waters circulate and how vigorous the circulation is... changes in the large - scale ocean circulation of the North Atlantic are propagating to the glaciers very quickly — not in a matter of years, but a matter of months.

This in turn helps explain how factors such as fresh water from melting ice or changes in global wind patterns might lead to large - scale changes in ocean circulation or climate in the future.

Scientists from Norway's Nansen Environmental and Remote Sensing Center, attempting to better understand how this process works, plugged their data into an ocean circulation / climate change model to examine the system out until 2080.

The models (and there are many) have numerous common behaviours — they all cool following a big volcanic eruption, like that at Mount Pinatubo in 1991; they all warm as levels of greenhouse gases are increased; they show the same relationships connecting water vapour and temperature that we see in observations; and they can quantify how the giant lakes left over from the Ice Age may have caused a rapid cooling across the North Atlantic as they drained and changed ocean circulation patterns.