Sentences with phrase «deep ocean changes»

«Even if the thermometer had never been invented, the evidence is there from deep ocean changes, from receding glaciers, from rising sea levels and receding sea ice and spring snow cover.

Not exact matches

That wind - driven circulation change leads to cooler ocean temperatures on the surface of the eastern Pacific, and more heat being mixed in and stored in the western Pacific down to about 300 meters (984 feet) deep, said England.

But research published yesterday in the journal Nature rebuts this idea, suggesting that it was changes in ocean circulation, not winds, that predominantly led the deep water to surface near Antarctica and exhale carbon dioxide to the atmosphere.

Researchers can measure annual changes in how the melt rate occurs, for example, or the effects of a single pulse of warm deep - ocean water.

Driven by stronger winds resulting from climate change, ocean waters in the Southern Ocean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of theocean waters in the Southern Ocean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of theOcean are mixing more powerfully, so that relatively warm deep water rises to the surface and eats away at the underside of the ice.

Schneider: When you're covering climate change, you don't get somebody from a deep ecology group to tell you we're near the end of the world and then somebody from the Competitive Enterprise Institute who's going to tell you carbon dioxide is a fertilizer while forgetting about ocean acidification.

Climate change impacts in the deep ocean are less visible, but the longevity and slow pace of life in the deep makes that ecosystem uniquely sensitive to environmental variability.

The problem stems from oxygen reduction in deep water, a phenomenon that some scientists are observing in oceans worldwide, and that may be related to climate change.

The new sea - level record was then used in combination with existing deep - sea oxygen isotope records from the open ocean, to work out deep - sea temperature changes.

But the balance between DVMs and the limited deep - water oxygen supply could be easily upset, Bianchi said — particularly by climate change, which is predicted to further decrease levels of oxygen in the ocean.

«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.

«What complicates this story is that if these animals are responsible for a chunk of oxygen depletion in general, then a change in their habits might have a feedback in terms of oxygen levels in other parts of the deeper ocean.»

SAN FRANCISCO — The specter of climate change has prompted radical ideas, such as pumping CO2 into the deep ocean to slow its buildup in the air.

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

That began to change last year with the discovery of DNA sequences for an organism that no one has ever actually seen living near a deep - sea vent on the ocean floor.

Climate changes that began ~ 17,700 years ago included a sudden poleward shift in westerly winds encircling Antarctica with corresponding changes in sea ice extent, ocean circulation, and ventilation of the deep ocean.

It takes centuries for that heat to work its way into the deeper ocean, changing the circulation and removing the sea ice, which is a big part of this process,» he said.

While these results indicate that coccolithophore calcification might increase under future ocean conditions, the researchers say that it's still unclear «whether, or how, such changes might affect carbon export to the deep sea.»

«These conditions will cause changes in phytoplankton growth and ocean circulation around Antarctica, with the net effect of transferring nutrients from the upper ocean to the deep ocean,» said lead author J. Keith Moore, UCI professor of Earth system science.

The water, 2000 km wide and 100 m deep, has affected ecosystems, changed weather inland, and altered ocean currents from Alaska to Mexico.

In the North Atlantic, more heat has been retained at deep levels as a result of changes to both the ocean and atmospheric circulations, which have led to the winter atmosphere extracting less heat from the ocean.

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

A new study found that vulnerability of deep - sea biodiversity to climate change's triple threat — rising water temperatures, and decreased oxygen, and pH levels — is not uniform across the world's oceans.

The deep ocean, which covers more than 60 percent of Earth's surface, is a biodiversity hotspot at increased risk from climate change.

«As we learn more about deep sea ecosystems and the role of oceans in mitigating climate change, it seems wise to take precautions to avoid damage that could have long - lasting and unforeseen consequences.»

Thanks to natural warming and cooling, oxygen concentrations at the sea surface are constantly changing — and those changes can linger for years or even decades deeper in the ocean.

«This implies that a very rapid transmission process must have operated, that linked rapid climate change around Greenland with the otherwise sluggish deep Atlantic Ocean circulation,» said Gottschalk.

The results, published in the journal Nature Geoscience, show how climate events in the Northern Hemisphere were tightly coupled with changes in the strength of deep ocean currents in the Atlantic Ocean, and how that may have affected conditions across the gocean currents in the Atlantic Ocean, and how that may have affected conditions across the gOcean, and how that may have affected conditions across the globe.

Functioning as a ballast, these platelets are important for the carbon transport to the deep ocean — and thus for the ability of the oceans to take up carbon dioxide from the atmosphere and mitigate the effects of climate change.

As changes happen in the polar regions, they are carried around the world by ocean currents, both at the surface and in the deep ocean.

As sea ice decreases dramatically across polar oceans, some scientists see a silver lining: The algal blooms that seem to thrive where ice has recently disappeared could damper climate change by trapping carbon in the deep ocean.

During the later period, when there was less sea ice, the whales dove significantly longer and deeper than in the earlier period — presumably in search of prey as the animals, in turn, changed their habits because of different ocean conditions brought on by sea ice loss.

Because such deep seawater circulates from the coast of Antarctica, this deep - water warming implies that the Southern Ocean drove the last major climate change.

For as much as atmospheric temperatures are rising, the amount of energy being absorbed by the planet is even more striking when one looks into the deep oceans and the change in the global heat content (Figure 4).

Because huge expanses of the deep ocean will be exposed to changing environmental conditions as a result of climate change (Mora et al., 2013; this study), the societal impacts of climate change in the deep sea will undoubtedly be widespread, complex and dynamic.

These results provide new insights into the role that the deep ocean plays as a storage reservoir for carbon, a process that helps to dampen the effects of human - driven climate change.

CO2 is more soluble in colder than in warmer waters; therefore, changes in surface and deep ocean temperature have the potential to alter atmospheric CO2.

Currents in the deep ocean exist because of changes in the density of sea water occurring at the surface.

A new study shows that nitrogen - feeding organisms exist all over the deep ocean, and not just in large oxygen - depleted «dead zones,» changing the way we think about the delicate nitrogen cycle.

For years, perhaps decades, Gray has been ascribing all sorts of climate changes and hurricane cycles to fluctuations in the Thermohaline Circulation (THC), an overturning circulation in the Atlantic ocean associated with formation of deep water in the North Atlantic.

Mysterious under - snow lakes pockmarking its edges and deep layers of ice at higher elevations both point to changes that could hasten melt and send water cascading into the ocean, pushing global sea levels ever higher.

Here we provide an overview of several technical developments by scientists and engineers at the Monterey Bay Aquarium Research Institute (MBARI) that have enabled and enhanced deep - sea exploration and experiments to assess the effects of changing ocean conditions on benthic marine animals.

I am also interested in how long is required for the surface temp to «achieve» 95 % of the ECS change: e.g. if climate sensitivity is 2K, how much time is required for the surface temp to increase by 1.9 K; and then how much longer for the deep oceans to increase by 1.9 K (or whatever 95 % of the projected increase in deep ocean temperature works out to.)

Around the Antarctic Peninsula, changes in ocean currents, and in particular, changes in circumpolar deep water flowing onto the continental shelf, is melting ice shelves from below.

The Homestar Spa from Sega Toys is a planetarium for your bath that not only paints the room with stars, but includes Rose Bath and Deep Ocean graphic domes for changing to a different mood.

Among an ever expanding (and as Karen Barad might say, «entangled») list, I am inspired by the complex and contradictory city I live in (the city of Chicago) and the incredible community of hard working, sincere, talented artists who I am surround by and have the privilege of working alongside and in collaboration with every day (too many and to diverse to name individually here) / / by mentors A. Laurie Palmer and Claire Pentecost and Anne Wilson and Ben Nicholson / / by Simon Starling and Andrea Zittel and Mark Dion and Sarah Sze and Phoebe Wasburn and Mierele Laderman Ukeles and Joseph Beuys and Eva Hesse and Hans Haacke and Robert Smithson / / by writers and philosophers Karen Barad and Jane Bennett and Rebecca Solnit and Italo Calvino and Steward Brand and the contributors to The Whole Earth Catalog (of which my father gave me his copies) and Ken Issacs and Carl Sagan and Neil deGrasse Tyson and William Cronon and Bruno Latour and Deluze and Guttari and Jack Burnham / / by ideas of radical intimacy and transformation and ephemerality and experimentation and growth and agency and mobility and nomadicism and balance and maintenance and survival and change and subjectivity and hylozoism and living structures / / by mycelium and soil and terracotta and honey and mead and wild yeast and beeswax and fat and felt and salt and sulfur and bismuth and meteorites and microbes and algae and oil and carbon and tar and water and lightening and electricity and oak and maple / / by exploration and navigation and «the Age of Wonder» and the Mir Space Station and the Deep Tunnel Project / / by Lake Michigan and the Chicago River and waterways and canals and oceans and puddles... to name a few.

«From Ocean to Horizon» was born out of the desire to investigate deep social, political and geographical changes to Hong Kong's landscape.

Some heat is being transferred to the deeper ocean by wind changes, reducing the rate of increase in the upper layer, which reduces the warming rate on land.

[OOOPS; this nonlinear effect puts their «alternative concept» into the realm of Trump administration «alternative facts» — BD] Although the deep ocean could dissolve 70 to 80 % of the expected anthropogenic carbon dioxide emissions and the sediments could neutralize another 15 % it takes some 400 years for the deep ocean to exchange with the surface and thousands more for changes in sedimentary calcium carbonate to equilibrate with the atmosphere.

It seems to me that they must show deeper mixing than 50 M, since there is not enough mass in the upper 50 meters of ocean to account for the annual heat storage changes that are implied by observations for the the full integrated 700 meter volume of ocean.