Sentences with phrase «oceans by carbon dioxide»

Not exact matches

Increased ocean acidification caused by the absorption of carbon dioxide causes bleaching, too.

The new report «Lights Out for the Reef», written by University of Queensland coral reef biologist Selina Ward, noted that reefs were vulnerable to several different effects of climate change; including rising sea temperatures and increased carbon dioxide in the ocean, which causes acidification.

Some of the carbon dioxide in the atmosphere is absorbed by water in oceans and rivers.

Thus, methane and carbon dioxide together, unaccompanied by carbon monoxide, on a rocky, ocean - bearing world would best be interpreted as an airtight sign of anoxic life.

Carbon is constantly being recycled throughout the world: It's taken in by plants as carbon dioxide, for example, and is dissolved in the oceans.

One - third of carbon dioxide emitted by humans enters the oceans, making seawater more acidic, the study noted.

The simulations also suggest that the removal of excess carbon dioxide from the atmosphere by natural processes on land and in the ocean will become less efficient as the planet warms.

Fish save the world billions of dollars in damages by helping store carbon dioxide in the oceans

About 2.7 billion years ago, photosynthetic algae in the oceans started making their mark, taking in carbon dioxide as fuel and sending the by - product — oxygen — skyward.

The carbon they produce when building their chalk plates even helps buffer the increasing acidity in the ocean caused by excess carbon dioxide in the atmosphere.

Oceans are taking in about 90 percent of the excess heat created by human greenhouse gas emissions, but they're also absorbing some of the carbon dioxide (CO2) itself.

As humans emit more carbon dioxide into the atmosphere, more of the gas is absorbed by the oceans, gradually making the water more acidic.

But the Southern Ocean plays a more benign role in the global carbon budget: Its waters now take up about 50 % of the atmospheric carbon dioxide emitted by human activities, thanks in large part to the so - called «biological pump.»

What happens when the world moves into a warm, interglacial period isn't certain, but in 2009, a paper published in Science by researchers found that upwelling in the Southern Ocean increased as the last ice age waned, correlated to a rapid rise in atmospheric carbon dioxide.

New research published today in Nature Geoscience by Richard Zeebe, professor at the University of Hawai'i — Mānoa School of Ocean and Earth Science and Technology (SOEST), and colleagues looks at changes of Earth's temperature and atmospheric carbon dioxide (CO2) since the end of the age of the dinosaurs.

It may takes tens of thousands of years for oceans to recover from the acidity caused by increased levels of carbon dioxide

The U.S. EPA is considering stiffening standards for the ocean acidification caused by rising carbon dioxide levels in the atmosphere

«However, ocean warming cancelled this benefit of elevated carbon dioxide by causing stress to the animals, making them less efficient feeders and preventing the extra energy produced by the plants from travelling through the food web to the fish.

1 One proposal, first suggested in the late 1980s by oceanographer John Martin of the Moss Landing Marine Laboratories in California, involves seeding ocean surfaces with iron to promote phytoplankton blooms that will soak up carbon dioxide, eventually exporting it into the deep ocean.

As a result — and for reasons that remain unexplained — the waters of the Southern Ocean may have begun to release carbon dioxide, enough to raise concentrations in the atmosphere by more than 100 parts per million over millennia — roughly equivalent to the rise in the last 200 years.

This balance is threatened by increasing atmospheric carbon dioxide, which causes ocean acidification (decreasing ocean pH).

«That's one reason we care — the ocean is the biggest sink of carbon dioxide, and by looking at nitrogen isotopes we can indirectly look at what draws down carbon dioxide.»

Acidity may impair movement Previous research has shown that when carbon dioxide is absorbed by the ocean and it becomes more acidic, concentrations of calcium carbonate drop, and that hurts shellfish and corals, which use calcium carbonate to build shells and skeletons.

When carbon dioxide, CO2, from the atmosphere is absorbed by the ocean, it forms carbonic acid (the same thing that makes soda fizz), making the ocean more acidic and decreasing the ocean's pH. This increase in acidity makes it more difficult for many marine organisms to grow their shells and skeletons, and threatens coral reefs the world over.

Over the last few centuries, the ocean has absorbed huge amounts of the carbon dioxide spewed into the atmosphere by human activities, such as burning fossil fuels.

Some scientists think that carbon dioxide released by the impact would have acidified the oceans, contributing to the extinctions, so the drill team will look at whether seafloor animals just after the impact were species that tolerate low pH.

As growing carbon dioxide gas emissions have dissolved into the world's oceans, the average acidity of the waters has increased by 30 % since 1750.

Ocean acidification, another change caused by the oceans» uptake of carbon dioxide, also hurts corals.

Pollution of the ocean by runoff from the land and the fouling of the air with carbon dioxide (which is warming the ocean and acidifying it) are accelerating and expanding the threats to the world's coastal waters.

During the spring and summer months, deep ocean water rich in carbon dioxide periodically wells up along the California coast when surface waters are pushed offshore by strong winds.

One of the many downsides of too much carbon dioxide in the atmosphere is what happens when some of that CO2 is absorbed by the oceans.

In July researchers from the National Oceanic and Atmospheric Administration published findings that the oceans store almost half the anthropogenic carbon dioxide — the CO2 produced by humans — released into the atmosphere.

As atmospheric CO2 levels increase from burning fossil fuels, this carbon dioxide is soaked up by seawater and makes the oceans more acidic.

(The ocean currently absorbs roughly half of the greenhouse gases, primarily carbon dioxide, that are released by human activity.)

The uptake of fossil fuel carbon dioxide (CO2) by the ocean increases seawater acidity and causes a decline in carbonate ion concentrations.

To understand where that carbon dioxide is going, we need precise, comprehensive, ongoing data about carbon dioxide absorption and emission by forests, the ocean and many other regions.

Fake paper fools global warming naysayers The man - made - global - warming - is - a-hoax crowd latched onto a study this week in the Journal of Geoclimatic Studies by researchers at the University of Arizona's Department of Climatology, who reported that soil bacteria around the Atlantic and Pacific oceans belch more than 300 times the carbon dioxide released by all fossil fuel emission, strongly implying that humans are not to blame for climate change.

High temperatures increase weathering of silicate rocks, and this sucks carbon dioxide out of the atmosphere and into the oceans — a process aided by plants.

«If this conclusion is confirmed by future observations, it would mean that the coastal ocean will become more and more efficient at removing carbon dioxide from the atmosphere,» said Goulven Lurallue, the paper's lead author and a researcher with Université Libre de Bruxelles in Belgium.

By manipulating the acidity of the Biosphere 2 ocean and measuring the resulting growth rates in coral between 1996 and 2003, Langdon proved that ocean acidification from rising atmospheric carbon dioxide would radically affect calcium carbonate — shelled marine life (pdf).

The foaming agent could interfere with ocean ecologies or inhibit the uptake of carbon dioxide by the ocean — effectively negating one of the major ways that the world's oceans fight global warming naturally.

Increased carbon dioxide in the atmosphere boosts, by gas - liquid equilibrium, the amount of carbonic acid in the ocean, which in turn lowers the marine pH level.

There is, therefore, much current interest in how coccolithophore calcification might be affected by climate change and ocean acidification, both of which occur as atmospheric carbon dioxide increases.

The high mortality rate is due to ocean acidification, partly driven by carbon dioxide emissions, according to an April 2012 study.

Gregoire created the panel earlier this year to examine the implications of dropping pH levels in seawater, a trend caused by the ocean's absorption of carbon dioxide from the atmosphere.

Some scientists are linking the phenomenon to warmer waters and ocean acidification caused by high levels of carbon dioxide in the atmosphere.

The finding suggests that sea life is already being affected by changes in the ocean's chemistry caused by rising carbon dioxide levels.

The presence of ample hydrogen in the moon's ocean means that microbes — if any exist there — could use it to obtain energy by combining the hydrogen with carbon dioxide dissolved in the water.

An international team of 27 oceanographers churned through 13 global models and concluded that carbon dioxide emissions could cause pH levels in the ocean to drop from an average of 8.1 today to 7.7 by the end of the century.

The work has implications for how ocean modelers determine the overall amounts of carbon dioxide taken up by the oceans, which is typically performed through oxygen - based measurements.