Sentences with phrase «rising atmospheric carbon»

CNN claimed the pace of rising atmospheric carbon dioxide emissions has become alarming.

Increased CO2 levels in greenhouses dramatically improve plant growth, especially when temperatures are also elevated; rising atmospheric carbon dioxide levels have likewise had astounding positive impacts on outdoor plant growth and survival.

Rising atmospheric carbon dioxide not only contributes to temperature increase but, as some of that carbon dioxide dissolves in the ocean, pH of ocean water declines.

The potential influence of rising atmospheric carbon dioxide (CO2) on public health: pollen production of common ragweed as a test case.

Among those other factors, rising atmospheric carbon dioxide concentration, supposedly the cause of rising temperatures, has been shown in many studies to stimulate tree growth.

«The recent several decades of wildfires are changing the boreal forest from a weak carbon sink — that is the forest and soil are accumulating carbon and helping offset rising atmospheric carbon dioxide concentration — to a weak carbon source,» Stith Gower of the University of Wisconsin told environmentalresearchweb.

«The implications are that wildfire management may help offset rising atmospheric carbon dioxide concentrations, and climate change does not appear to have a large positive effect on carbon storage.»

Furthermore, the discovery of a surprising number of submarine volcanoes highlights the underestimation of global volcanism and provides a loose basis for an estimate that may partly explain ocean acidification and rising atmospheric carbon dioxide levels observed last century, as well as shedding much needed light on intensified polar spring melts.

Corals, shellfish, and other marine creatures made of calcium carbonate are threatened by ocean acidification, a consequence of rising atmospheric carbon dioxide levels increasing dissolved CO2 in the ocean.

Well there was one exception: Sherwood Rowland, Nobel laureate submitted a letter which was an indirect critique of a paper by Arthur Robinson and others (which I did not publish but to which I provided a link) «Environmental Effects of Increased Atmospheric Carbon Dioxide,» which argued, as I recall, that rising atmospheric carbon dioxide concentration was an unmitigated benefit to humanity.

Joanie Kleypas is a marine scientist at the National Center for Atmospheric Research, who investigates how rising atmospheric carbon dioxide is affecting marine ecosystems.

The year as a whole gave miserable summer weather to many, and there has been no upward trend of temperatures since the highs of 1998, despite steadily rising atmospheric carbon dioxide levels.

Ainsworth, E.A. and J.M. McGrath, 2010: Direct effects of rising atmospheric carbon dioxide and ozone on crop yields.

At the same time, evidence shows that rising atmospheric carbon dioxide, partly driven by industrial emissions, is boosting forest growth.

• Rising atmospheric carbon dioxide gets a lot of attention (think Al Gore's An Inconvenient Truth), but it's only one factor in rising temperatures.

Rice (a C3 crop) and barnyard grass (Echinochloa crusgalli L.)(a C4 weed) were grown in a 1:1 mixture in a paddy field in ambient condition and with supplemented free air carbon dioxide enrichment (FACE, CO2concentration + 200 μmol mol − 1), in order to evaluate the impact of rising atmospheric carbon dioxide on nutrient competition between rice crop and weed.

Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record.

Now, if there's a single take - away from this summary, it would be that the science on the relationship between fossil fuel combustion, rising atmospheric carbon dioxide, and global warming and climate change was really settled by 1979.

One would see the temperature line rising away from the SOI line if, for example, rising atmospheric carbon dioxide concentrations had a significant influence.

a 56 - year record of rising atmospheric carbon dioxide levels, will continue with support from American philanthropists Eric and Wendy Schmidt.

Current climate change is characterized by rising atmospheric carbon dioxide (CO2) concentrations and associated warming.

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).

Human - induced changes to Earth's carbon cycle — for example, rising atmospheric carbon dioxide and ocean acidification — have been observed for decades.

Late last month, officials at California's Scripps Institution of Oceanography turned to Twitter seeking donations to maintain the iconic «Keeling curve», a 55 - year record of rising atmospheric carbon dioxide levels.

The iconic «Keeling curve,» a 56 - year record of rising atmospheric carbon dioxide levels, will continue with support from American philanthropists Eric and Wendy Schmidt.

The indirect effects of rising atmospheric carbon dioxide (CO2) levels, such as changes in soil moisture and plant structure, can have a bigger impact on ecosystems than previously thought.

GREENHOUSE GASSED In a long - running field experiment in Minnesota, scientists are studying the effects of rising atmospheric carbon dioxide levels on plots of grassland.

Not exact matches

Worldwide, carbon storage has the capability to provide more than 15 percent of the emissions reductions needed to limit the rise in atmospheric CO2 to 450 parts per million by 2050, an oft - cited target associated with a roughly 50 - percent chance of keeping global warming below 2 degrees, but that would involve 3,200 projects sequestering some 150 gigatons of CO2, says Juho Lipponen, who heads the CCS unit of the International Energy Agency in Paris.

My work is also directed toward determining why plants exposed to elevated carbon dioxide concentrations often have only a temporary increase in growth rate, and toward determining what plant characteristics might be most beneficial to the productivity and to the nutritional value of crops if atmospheric carbon dioxide concentrations continue to rise.

His data, published in 1938, showed a temperature rise that correlated with a rise in atmospheric carbon dioxide.

An observed long - term increase in the number of these clouds may be due in part to the rise in atmospheric carbon dioxide levels, he says.

About 6000 years ago, levels of atmospheric carbon dioxide rose — and until now slash - and - burn by the 12 million humans on the planet at the time has been blamed.

Freshwater such as lakes, though, receive various sources of carbon dioxide from decomposing organic and inorganic matter swept into them, which makes it hard for scientists to distinguish between the direct effects of rising atmospheric CO2 and these other elements.

Researchers believe that the last ice age, which began 40 million years ago, was kicked off by the rise of the Himalayas during the collision of tectonic plates and a corresponding plunge in atmospheric carbon dioxide.

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.

Because life prefers lighter carbon, the isotopes suggest to some scientists that the atmospheric rise must be due to extra microbial production, and not a boost due to leaked gas from fracking operations, which has a heavier isotopic signature.

Black carbon aerosols — particles of carbon that rise into the atmosphere when biomass, agricultural waste, and fossil fuels are burned in an incomplete way — are important for understanding climate change, as they absorb sunlight, leading to higher atmospheric temperatures, and can also coat Arctic snow with a darker layer, reducing its reflectivity and leading to increased melting.

During the PETM, atmospheric carbon dioxide more than doubled and global temperatures rose by 5 degrees Celsius, an increase that is comparable with the change that may occur by later next century on modern Earth.

But until the Industrial Revolution, atmospheric carbon dioxide levels never rose above a manageable 280 parts per million.

Although the earth has experienced exceptional warming over the past century, to estimate how much more will occur we need to know how temperature will respond to the ongoing human - caused rise in atmospheric greenhouse gases, primarily carbon dioxide.

Since the Industrial Revolution, atmospheric carbon dioxide levels have risen 42 percent.

However, this has to a large extent not led to immediate action to address the severity of the imminent crisis of rising global temperatures and associated problems due to the increase in atmospheric carbon dioxide concentrations due to human activity.

These little organisms are central to the global carbon cycle, a role that could be disrupted if rising levels of atmospheric carbon dioxide and warming temperatures interfere with their ability to grow their calcified shells.

From a quarter to half of Earth's vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.

Rising atmospheric levels of carbon dioxide, blamed for global warming, may have a subterranean silver lining.

But he wonders whether an increase in soil clumping might offset a rise in atmospheric carbon dioxide, simply by storing more carbon in the soil.

Plants are the original carbon capture and storage solution: as atmospheric carbon dioxide levels rise, plants absorb more of the gas to fuel photosynthesis, and more carbon is stored in the soil.

Scientists generally think that global warming, driven mostly by rising levels of atmospheric carbon dioxide, will make some regions wetter and others drier.

And it finds that, while this winter's unusually strong Arctic Oscillation - which funnels cold northern air to the East Coast and pulls warm mid-latitude air up to the Arctic - is predicted as atmospheric carbon dioxide levels rise, seasonal temperature anomalies associated with it aren't enough to blunt long - term warming trends.

Earth's average temperature has remained more or less steady since 2001, despite rising levels of atmospheric carbon dioxide and other greenhouse gases — a trend that has perplexed most climate scientists.