Sentences with phrase «deep ocean climate»

Results provide insight into whether deep ocean climate variability can be inferred indirectly based on current monitoring systems, or whether good estimates of deep variability will have to await routine sampling of the deep ocean.

Not exact matches

They are the Orbiting Carbon Observatory -3; the Plankton, Aerosol, Cloud, ocean Ecosystem program; the Deep Space Climate Observatory; and the CLARREO Pathfinder.

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.

«There was relatively more carbon dioxide emitted from the deep ocean and released to the atmosphere as the climate warmed,» Jaccard says.

The request also calls for canceling five NASA earth science missions, including an operating Earth - facing camera on the Deep Space Climate Observatory satellite and the planned Plankton, Aerosol, Cloud, ocean Ecosystem satellite, set for launch in 2022, which would assess the ocean's health and its interactions with the atmosphere.

In an effort to keep the National Oceanic and Atmospheric Administration (NOAA) focused on its expensive, flagship weather satellites, the Senate, in its version of the spending bill, had given NASA control of two smaller missions, Jason - 3, an ocean altimetry satellite, and the Deep Space Climate Observatory (DSCOVR), a space weather satellite.

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.

But much of what is known about this time period's climate comes from cores drilled deep in the ocean, Hren says.

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.

«The only explanation that makes sense is that the deep ocean cooled,» says team member Matthew Huber, a climate modeler at Purdue University.

Our global climate models zoom down to finer and finer resolutions; our satellites reveal remote corners of the globe; we increase our understanding of the response of giant ice sheets and deep ocean currents to a warming planet.

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.

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.

A new study has found that turbulent mixing in the deep waters of the Southern Ocean, which has a profound effect on global ocean circulation and climate, varies with the strength of surface eddies — the ocean equivalent of storms in the atmosphere — and possibly also wind spOcean, which has a profound effect on global ocean circulation and climate, varies with the strength of surface eddies — the ocean equivalent of storms in the atmosphere — and possibly also wind spocean circulation and climate, varies with the strength of surface eddies — the ocean equivalent of storms in the atmosphere — and possibly also wind spocean equivalent of storms in the atmosphere — and possibly also wind speeds.

The Southern Ocean plays a pivotal role in the global overturning circulation, a system of surface and deep currents linking all oceans and one of the fundamental determinants of the planet's climate.

Thus, eddies can lend seasonal and even climate - scale components to the generally weatherless deep ocean.

To untangle the impacts that these three climate stressors will have on seafloor diversity in the future, the researchers examined existing published data and collected new data on organisms living in deep - sea sediments in upwelling regions along continental margins, where the ocean and continental crusts meet along the seafloor.

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.

The preliminary results, analyzed by paleoclimatologist Pierre Sepulchre of the Climate and Environment Laboratory, suggest that with any channel deeper than 200 meters currents behave as though there's an entire ocean there.

«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.»

The study marks the first time that human influence on the climate has been demonstrated in the water cycle, and outside the bounds of typical physical responses such as warming deep ocean and sea surface temperatures or diminishing sea ice and snow cover extent.

«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 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.

Those missions include the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) satellite to monitor Earth's ocean health and atmosphere in 2022; the Orbiting Carbon Observatory - 3 experiment that would track carbon - dioxide levels from the International Space Station; the Climate Absolute Radiance and Refractivity Observatory (CLARREO) pathfinder Earth climate instrument for the ISS in 2020 time frame; and, finally, the Deep Space Climate Observatory (DSCOVR), a joint NASA - NOAA mission that is in orbit today and monitoring Earth fromClimate Absolute Radiance and Refractivity Observatory (CLARREO) pathfinder Earth climate instrument for the ISS in 2020 time frame; and, finally, the Deep Space Climate Observatory (DSCOVR), a joint NASA - NOAA mission that is in orbit today and monitoring Earth fromclimate instrument for the ISS in 2020 time frame; and, finally, the Deep Space Climate Observatory (DSCOVR), a joint NASA - NOAA mission that is in orbit today and monitoring Earth fromClimate Observatory (DSCOVR), a joint NASA - NOAA mission that is in orbit today and monitoring Earth from space.

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.

But in a new study in Nature, researchers show that the deep Arctic Ocean has been churning briskly for the last 35,000 years, through the chill of the last ice age and warmth of modern times, suggesting that at least one arm of the system of global ocean currents that move heat around the planet has behaved similarly under vastly different climOcean has been churning briskly for the last 35,000 years, through the chill of the last ice age and warmth of modern times, suggesting that at least one arm of the system of global ocean currents that move heat around the planet has behaved similarly under vastly different climocean currents that move heat around the planet has behaved similarly under vastly different climates.

It was a small fraction of Exxon Research's annual $ 300 million budget, but the question the scientists tackled was one of the biggest uncertainties in climate science: how quickly could the deep oceans absorb atmospheric CO2?

Climate mitigation by the deep ocean may ultimately compromise many of the ecosystem services we value.

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.

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.

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.

This information increases global climate simulation accuracy through better representation of deep ocean heat and carbon fluxes.

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.)

Other indicators such as ocean acidification, increasing deep ocean heat, melting ice and permafrost, shrinking snow pack, and sea level rise further make the case that the additional carbon dioxide is affecting the global climate system.

In the deep past it is during warmer climates that you get a stratified and stagnant ocean.

Some temperature reduction is possible if the climate forcing is reduced rapidly, before heat has penetrated into the deeper ocean.

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Carbon Brief has posted an excellent piece by Roz Pidcock putting the new Nature Climate Change paper in broader context: «Beneath the waves: How the deep oceans have continued to warm over the past decade.»

A lot of reseach energy is being devoted to the study of Methane Clathrates — a huge source of greenhouse gases which could be released from the ocean if the thermocline (the buoyant stable layer of warm water which overlies the near - freezing deep ocean) dropped in depth considerably (due to GHG warming), or especially if the deep ocean waters were warmed by very, very extreme changes from the current climate, such that deep water temperatures no longer hovered within 4C of freezing, but warmed to something like 18C.

In my briefings to the Association of Small Island States in Bali, the 41 Island Nations of the Caribbean, Pacific, and Indian Ocean (and later circulated to all member states), I pointed out that IPCC had seriously and systematically UNDERESTIMATED the extent of climate change, showing that the sensitivity of temperature and sea level to CO2 clearly shown by the past climate record in coral reefs, ice cores, and deep sea sediments is orders of magnitude higher than IPCC's models.

Terrell Johnson, reporting on a recent NASA publication concluding that deep ocean temperatures have not increased since 2005 (http://www.weather.com/science/environment/news/deep-ocean-hasnt-warmed-nasa-20141007): «While the report's authors say the findings do not question the overall science of climate change, it is the latest in a series of findings that show global warming to have slowed considerably during the 21st century, despite continued rapid growth in human - produced greenhouse gas emissions during the same time.»

I start by noting some of the unnerving situations I've been in while reporting about climate change and related issues — sitting with a murderous cattle rancher on his porch deep in the Amazon rain forest, camping on cracking sea ice floating on the 14,000 - foot - deep Arctic Ocean a few dozen miles from the North Pole.