Tag Archive: atmospheric carbon dioxide

Spike in carbon dioxide emissions can cause mercury to rise

Washington, Dec 21 (IANS) Increases in atmospheric carbon dioxide could have a significantly larger effect on global temperatures than previously thought, says a new study.

A team of researchers demonstrated that only a relatively small rise in atmospheric carbon dioxide was associated with substantial warming during mid-and early-Pliocene era, three to five million years ago, when [...]

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Earth 30-50 percent more sensitive to CO2 than previously estimated

Washington, December 7 (ANI): A new study has estimated that the Earth’s temperature may be 30-50 percent more sensitive to atmospheric carbon dioxide (CO2) than has previously been estimated.

According to the results of the study, components of the Earth’s climate system that vary over long timescales – such as land-ice and vegetation – have an [...]

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Rising CO2 levels could be making trees grow like crazy

Washington, December 5 (ANI): A new study has suggested that the rising level of atmospheric carbon dioxide (CO2) may be fueling more than climate change, as it could also be making some trees grow like crazy.

The study, by scientists from the University of Wisconsin-Madison and the University of Minnesota at Morris (UMM), took quaking aspen, [...]

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Carbon dioxide emissions up by 29 percent: Report

London, Nov 21 (IANS) Carbon dioxide emissions are up by 29 percent since 2000, far beyond the capacity of the global ’sinks’ to absorb such volumes, says a report.

The use of coal as a fuel has now surpassed oil and developing countries now emit more greenhouse gases than developed countries – with a quarter of [...]

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Detecting clear trend in water vapor would take 50 years, say scientists

Washington, October 27 (ANI): A new study by scientists has determined that it would take about 50 years of observations to detect a clear trend in upper tropospheric water vapor.

Water vapor in the upper troposphere contributes to the greenhouse effect, and scientists predict that humidity will increase in the future along with rising levels of [...]

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Ocean acidification may contribute to global shellfish decline

Washington, October 27 (ANI): In a new study, scientists have found that ocean acidification may contribute to global shellfish decline, as elevated carbon dioxide (CO2) concentrations impede growth and survival of bivalve larvae.

Researchers at the Stony Brook University in the US carried out the study.

In the study, Stephanie Talmage and Professor Chris Gobler showed that [...]

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World’s coral reefs worth 1.2 million dollars per hectare, per year

Washington, October 17 (ANI): A preliminary research has revealed jaw-dropping dollar values of the “ecosystem services” of biomes like forests and coral reefs, rising to as much as 1.2 million dollars per hectare, per year.

Undertaken to help societies make better-informed choices, [...]

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Arctic lands and oceans account for 25 percent of world’s net sink of CO2

Washington, October 15 (ANI): In a new study, ecologists estimate that Arctic lands and oceans are responsible for up to 25 percent of the global net sink of atmospheric carbon dioxide (CO2).

In their review paper, David McGuire of the US Geological [...]

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Current carbon dioxide levels also prevailed 15 mn years ago

Washington, Oct 9 (IANS) You would have to go back at least 15 million years to find carbon dioxide levels as high as they are today, say scientists.

Then ‘global temperatures were five to 10 degrees Fahrenheit higher than they are today, sea level was approximately 75 to 120 feet higher than today, there was no [...]

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Global warming may increase volcanic eruptions

London, September 18 (ANI): A team of geologists is trying to gather data in an attempt to understand how global warming will increase the explosivity of volcanic eruptions.

As increasing atmospheric carbon dioxide levels warm the planet, the problems associated with melting ice won’t just raise sea-levels; [...]

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Declining CO2 levels helped in Antarctic formation 34 million years ago

Washington, September 14 (ANI): In a major research study, the link between declining carbon dioxide (CO2) levels in the earth’s atmosphere and the formation of the Antarctic ice caps some 34 million years ago has been confirmed for the first time.

The research was carried out by a team of scientists from Cardiff, Bristol and Texas [...]

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Scientists predict effect of global warming on spring flowers by 2080

Washington, September 10 (ANI): A new study by scientists has predicted the effect of global warming on spring flowers by the year 2080.

Data, taken from records dating back to the late nineteenth century, has been used to demonstrate the [...]

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Planets have to be about the size of Earth to be conducive for life

London, September 8 (ANI): In a new research, it has been determined that rocky worlds have to be about the size of Earth to be conducive for life.

According to a report in New Scientist, the discovery of extrasolar super-Earths – rocky planets about five to ten times the mass of Earth – has raised hopes [...]

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Diatoms can also drive large-scale phytoplankton bloom in southwest Indian Ocean

Washington, August 15 (ANI): In a new research, scientists have found that the large-scale autumn bloom of microscopic marine algae known as phytoplankton in the southwest Indian Ocean was driven by diatoms in 2005, not by nitrogen-fixing blue-green algae.

The observations were [...]

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Ozone depletion reduces CO2 uptake of Southern Ocean

Washington, August 9 (ANI): In a new research, scientists have determined that depletion in the ozone layer is reducing the atmospheric carbon dioxide (CO2) uptake of the Southern Ocean.

Most current models predict that the strength of the Southern Ocean CO2 sink should increase as atmospheric CO2 rises, but observations show that this has not been [...]

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