Sentences with phrase «ocean cycling at»

Not exact matches

Looking at shifts in Manley's winter temperatures from year to year, he says, gives a good reading of important natural cycles that influence climate, such as changes in ocean circulation like the North Atlantic Oscillation.

Now, using two deep cores collected at two Ocean Drilling Program sites in the Southern Ocean, Jaccard and colleagues have reconstructed ocean records of productivity and vertical overturning reaching back a million years, through multiple glacial - interglacial cyOcean Drilling Program sites in the Southern Ocean, Jaccard and colleagues have reconstructed ocean records of productivity and vertical overturning reaching back a million years, through multiple glacial - interglacial cyOcean, Jaccard and colleagues have reconstructed ocean records of productivity and vertical overturning reaching back a million years, through multiple glacial - interglacial cyocean records of productivity and vertical overturning reaching back a million years, through multiple glacial - interglacial cycles.

In April 2008, scientists at NASA's Jet Propulsion Laboratory announced that while the La Niña was weakening, the Pacific Decadal Oscillation (PDO)-- a larger - scale, slower - cycling ocean pattern — had shifted to its cool phase.

Indeed, scientists at Scripps recently suggested that 1,800 - year cycles of ocean tides could drive a natural rise in global temperatures.

The selective extinction of large - bodied animals could have serious consequences for the health of marine ecosystems, the scientists say, because they tend to be at the tops of food webs and their movements through the water column and the seafloor help cycle nutrients through the oceans.

If it turns out to be common, it might mean that the moon could be cycling life - friendly compounds between the surface and the deep, and that substantially increases the chance that its ocean is habitable, says Michael Bland, a planetary scientist at the US Geological Survey in Flagstaff, Arizona.

Using sediment gathered from the ocean floor in different areas of the world, the researchers were able to confirm that as the ice sheets started melting and the climate warmed up at the end of the last ice age, 18,000 years ago, the marine nitrogen cycle started to accelerate.

The results of their study confirm that oceans are good at balancing the nitrogen cycle on a global scale.

A McGill - led international research team has now completed the first global study of changes that occurred in a crucial component of ocean chemistry, the nitrogen cycle, at the end of the last ice age.

Now researchers at MIT and Bristol University in the United Kingdom have found that these microscopic, mixotrophic organisms may have a large impact on the ocean's food web and the global carbon cycle.

«A sort of grand problem in Earth science is to understand the water cycle — evaporation from the ocean, clouds, rain, the formation of ice, the runoff from the land back into the sea,» said Eric Lindstrom, Aquarius program scientist at NASA.

The detailed mechanisms of how the oceans contribute to this global carbon cycle at the microscopic scale, and which microbes have a leadership role in the breakdown process, are complex and convoluted problems to solve.

The effects of ocean acidification on a pelagic community and their impacts on food webs and biogeochemical cycles were studied in a long - term mesocosm experiment conducted in the Gullmar Fjord at the west coast of Sweden.

At the time, Exxon had deployed a state - of - the - art supertanker outfitted with equipment for measuring marine CO2 concentrations to understand the role the oceans play in the world's carbon cycle.

«A proper accounting of biogeochemical cycles in the oceans reveals that methane has a much more powerful foe than oxygen,» said Stephanie Olson, a graduate student at the University of California, Riverside, a member of the Alternative Earths team and lead author of the new study published September 26 in the Proceedings of the National Academy of Sciences.

These ocean winds, in turn, are affected by variations in natural cycles that manifest in changes at the surface of the ocean and immediately over it.

«Changes in ocean circulation have been proposed as a trigger mechanism for the large coupled climate and carbon cycle perturbations at the Paleocene - Eocene Thermal Maximum (PETM, ca. 55 Ma).

The simulated ocean should yield insights into a series of possible geochemical reactions that are likely happening near the moon's core, where water - rock interaction is coupled to the thermal cycling of sea water, said team member Kosuke Fujishima, of the Earth - Life Science Institute at the Tokyo Institute of Technology.

Looking at GAST since 1880, one sees some famous plateaus that have been ascribed to aerosol and internal variability (ocean cycles).

According to new research by Thomas Weber, an assistant professor of Earth and environmental sciences at the University of Rochester, small microenvironments in the deep ocean may hold key clues to the global cycling of nitrogen in seawater.

Here you can relax, chill out in the swimming pool, go jogging in the beach, cycle along the coast, meet local people, join a surf experience, enjoy the fabulous fresh fish and seafood and unwind at the end of the day watching the sunset in breathtaking ocean landscape.

If you feel more energetic you can: swim in the ocean, jog or walk along the splendid coastline, cycle part of the scenic route of the Cape Argus Cycle Tour, wind or kite surf at Glencairn beach, explore the hiking trails around Cape Point, surf one of the local breaks, sea kayak around the harbour or past the penguins, sail from Simon's Town Yacht Club, enjoy a round of golf or go for a scuba cycle part of the scenic route of the Cape Argus Cycle Tour, wind or kite surf at Glencairn beach, explore the hiking trails around Cape Point, surf one of the local breaks, sea kayak around the harbour or past the penguins, sail from Simon's Town Yacht Club, enjoy a round of golf or go for a scuba Cycle Tour, wind or kite surf at Glencairn beach, explore the hiking trails around Cape Point, surf one of the local breaks, sea kayak around the harbour or past the penguins, sail from Simon's Town Yacht Club, enjoy a round of golf or go for a scuba dive.

Whether driving, cycling or hiking the Great Ocean Road, take time to stop at a local brewery or distillery for delicious small - batch beers and spirits.

So whether you're driving, cycling or hiking the Great Ocean Road, take time to pull up a stool and sample one the delicious ales, pilsners or stouts on offer at Forrest Brewing Company, Great Ocean Road Brewhouse and Otway Estate Winery and Brewery.

Does the onset of ocean anoxia at the end of many of these events suggest a possibility of cycle where the collapse of one civilization provides the seeds (fossil fuels) for the next?

In fact, «Atlantic Ocean temperature data shows that this is just the latest manifestation of a long - running hurricane cycle that dates back to at least 1870,» said Landsea.»

In general it's recognised that prediction of the so far unpredictable phenomena (El Nino's, La Nina's, the fine details of ocean circulation oscillations, volcanos and any solar variation outwith the 11 year solar cycle) that provide short term modulation of any trend is likley to be unfruitful at present.

Alternatively, you can create your own CO2 concentration projections based on your own emission and ocean / biosphere sink / source scenarios using this carbon cycle applet created by Galen McKinley at Madison, which can then be integrated into EdGCM.

Also true is there exist heat - tolerant corals, corals that are regularly exposed to (and routinely survive) the extreme stress of finding themselves out in the tropical air at low tide, and many ocean organisms that live through large swings in pH through tidal cycles.

He has published research on the carbon cycle of the ocean and the sea floor, at present, in the past, and in the future.

Of course its always possible we have missed some mysterious natural cycle that could be operating right now to cause warming, but scientists have had a close look at every possibility they can think of from solar cycles, ocean cycles, geothermal energy, cosmic rays and ruled them out.

[Response: That is a positive feedback that acted during ice age cycles: when it got warmer at the end of an ice age, this led to release of stored CO2 from the deep ocean, thus raising atmospheric CO2 levels.

It is true that during ice ages the oceans took up more CO2 and that is why there was less in the atmosphere, and during the warming at the end of glacial cycles that CO2 came back out of the ocean, and this was an important amplifying feedback.

But while the graph was only for SST (sea surface temperature, something different of SAT — surface air temperature, even at sea), the influence of the solar cycle and volcanic episodes (El Chicon and Pinatubo) is visible globally in the oceans until a depth of 300 m in the Levitus data.

In this year 1960 A.D., we are (still according to the Ewing - Donn theory) at the point in the cycle where the Arctic Ocean is almost ready to shed its old, old, covering of ice.

If in exceeds out and the diffential MUST exist from top to bottom of the atmosphere, then before the hotter air can migrate to the deep ocean, the daily temerature cycling will force the hotter air at the bottom into an overall equlibrium ie hotter air will rise — or more correctly since GHGs have heated the air up more at the bottom, then the sun induced daily warming will add more heat to the top, & less at the bottom to force the equilibrium — ie effectively hot air rising even if not in actuality.

SO just HOW can we justify that that the outflow in the computer MUST be less than inflow for the 250 years of the computer run, when clearly the daily temperature cycle will reestablish the equilibrium (at least for the atmosphere & ground — not sure about deep ocean equilibrium, BUT I also know that there is MUCH MUCH MORE energy stored in the Land (eg solid iron core of earth) than in the ocean & the GCMs do NOT address this either).

-- Co2 released to the atmosphere through the burning of fossil fuels is cycled through the oceans based on a five year residence time, so that only about a quarter of the co2 in the atmosphere at any one time is from man.

Is the rather definitive statement that «The increased activity since 1995 is due to natural fluctuations (and) cycles of hurricane activity driven by the Atlantic Ocean itself along with the atmosphere above it and not enhanced substantially by global warming» at all supportable?

But as cogently interpreted by the physicist and climate expert Dr. Joseph Romm of the liberal Center for American Progress, «Latif has NOT predicted a cooling trend — or a «decades - long deep freeze» — but rather a short - time span where human - caused warming might be partly offset by ocean cycles, staying at current record levels, but then followed by «accelerated» warming where you catch up to the long - term human - caused trend.

At least you acknowledge that the warming observed is not caused by the Sun, or natural ocean cycles.

Furthermore the entire biosphere is energised by extra warmth and the whole carbon cycle speeds up with extra warmth from sun or oceans without any need to invoke human involvement at all.

Marine export production (the fraction of primary production that is not respired at the ocean surface and thus sinks to depth) is the biological process that has the largest influence on element cycles.

In fact if one looks at the heat balance of the oceans down to 2000M, which can not be driven to first order by surface related ocean cycles, we come to the conclusion that the earth is warming due to radiative imbalance.

As for the Sun, well, like AnnaV I consider that the 2 by far most important factors in climate evolution is the cloudiness because it governs albedo and the large scale oceans» behaviour because that's where the energy is Again you are so angry at the AGW crowd, that you miss the whole point: the all - important clouds and albedo vary together, but do not vary with the solar cycle, as far as our observations go, e.g. http://www.leif.org/research/cloud-cover.png and http://www.leif.org/research/albedo.png

Examples of less certain science include understanding the effects of climate change on extreme weather in different regions, the role the deep ocean plays in the climate cycle and the rate at which sea level will rise over the next century.

You don't have to doubt the catastrophic anthropogenic global warming theory to know that there are key variables that have important, measurable effects on world temperatures at these kind of timescales — ocean cycles come to mind immediately — which he has left out.

Also, it seems the condition of more exposed and warmer arctic waters also adds to the moisture content, regardless of how much ocean was covered by ice at the beginning of the cycle.

Limited validations for the results include comparisons of 1) the PERSIANN - derived diurnal cycle of rainfall at Rondonia, Brazil, with that derived from the Tropical Ocean Global Atmosphere Coupled Oceanï ¿ 1/2 Atmosphere Response Experiment (TOGA COARE) radar data; 2) the PERSIANN diurnal cycle of rainfall over the western Pacific Ocean with that derived from the data of the optical rain gauges mounted on the TOGA - moored buoys; and 3) the monthly accumulations of rainfall samples from the orbital TMI and PR surface rainfall with the accumulations of concurrent PERSIANN estimates.

Yet, we explained there is also reasonable basis for concern that a warming world may at least temporarily increase tornado damage including the fact that oceans are now warmer, and regional ocean circulation cycles such as La Nina / El Nino patterns in the Pacific which affect upper atmospheric conditions appear to becoming more chaotic under the influence of climate change.