Study finds unexpected new Antarctic carbon sink

Global warming is just getting started in the Antarctic region.

Global warming is just getting started in the Antarctic region.

Increased seafloor life seen as negative global warming feedback

Staff Report

Shrinking sea ice around parts of Antarctica has spurred the growth of seafloor life that may help accumulating and bury carbon, researchers reported in the Cell Press journal Current Biology.

“It was a surprise that life had been invisibly responding to climate change for more than a decade below one of the most obviously visible impacts of climate change: the ‘blueing’ poles,” said David Barnes, of the British Antarctic Survey. “We’ve found that a significant area of the planet, more than three million square kilometers, is a considerable carbon sink and, more importantly, a negative feedback on climate change.” Continue reading

Report: Little doubt that global warming will eradicate the world’s glaciers and ice sheets

‘The big picture across the world and over the long run is clear — carbon dioxide is making the ice melt’


A Greenland glacier shows signs of wear and tear during the peak of the summer melt season. @bberwyn photo.

Staff Report

FRISCO — Just like today, there were regional nuances in the Earth’s climate at the end of the last ice age — like solar radiation and ocean currents — that were factors in the meltdown of ice sheets and glaciers.

But the single biggest overriding cause was a global rise in temperatures caused by an increase in atmospheric carbon dioxide, a team of researchers said in a new study that measured isotopes in boulders that were uncovered during the global meltdown 11,000 years ago. Continue reading

Climate: Conservation group tries new path to limiting CO2 emissions


Increasingly corrosive ocean waters pose a serious threat to shell-building species and other marine life.

‘Future generations will look back and wonder why we didn’t do everything we could to save the world’s oceans …’

Staff Report

FRISCO — Citing the growing threat to the world’s oceans, environmental advocates want the federal government to regulate carbon dioxide under the Toxic Substances Control Act.

The regulations have been used to limit emissions of other harmful chemicals, including chlorofluorocarbons, PCBs and asbestos.

“Time’s running out to avoid a mass extinction of wildlife in our oceans,” said Miyoko Sakashita, oceans director with the Center for Biological Diversity. “It may not look like a toxic chemical, but when there’s too much CO2 in the ocean, it turns seawater corrosive and dissolves the protective shells that marine animals need to survive,” Sakashita said. Continue reading

Global CO2 level hit 400 ppm milestone in March


Dubious milestone.

Irrevocable climate change ahead for Planet Earth

Staff Report

FRISCO — For the first time since people started keeping track of such things, the concentration of heat-trapping carbon dioxide in the atmosphere was above 400 parts per million for an entire month.

Climate scientists say the readings from March 2015 are another significant milestone along the path to a dangerously overheated world, as carbon dioxide and other heat-trapping pollution continue drive global warming. Continue reading

Climate: Study says fjords are key carbon sinks

Fjords like this one in Iceland may play an important role in regulating atmospheric carbon dioxide. @bberwyn photo.

Fjords like this one in Iceland may play an important role in regulating atmospheric carbon dioxide. @bberwyn photo.

Deep, cold and oxygen-starved, fjords may keep organic carbon from entering the atmosphere for many centuries

Staff Report

FRISCO — The majestic fjords of the far north may have played a key role in buffering the atmosphere against variations in carbon dioxide levels associated with rapid climate change at the beginning and end of past ice ages.

A study by New Zealand scientists estimates that fjords capture and store about 18 million tons of organic carbon each year. That’s equal to about 11 percent of annual marine carbon capture globally, said Dr. Candida Savage of New Zealand’s University of Otago, after publishing her findings in the  journal Nature Geoscience. Continue reading

After dropping for a few years, U.S. greenhouse gas emissions creep up again in latest EPA tally


Carbon dioxide … and more.

Can the EPA’s clean power plan help tame the global warming dragon?

Staff Report

FRISCO — U.S. greenhouse gas emissions have dropped 9 percent in the last 10 years, the EPA said this week, releasing its 20th annual national greenhouse gas inventory.

The latest tally is current through 2013, which shows a 2 percent increase from the previous year, due to increased energy consumption across all economic sectors and increased use of coal for electricity generation. Continue reading

Report shows growing impacts of ocean acidification

CU-Boulder scientists study document decline of calcification rates in marine organisms around Antarctica


The Southern Ocean may lose its ability to function as a carbon sink. bberwyn photo.

Staff Report

*More Summit Voice stories on ocean acidification

FRISCO — The steady increase of atmospheric carbon dioxide is already causing large-scale shifts in the ocean carbon cycle, according to University of Colorado, Boulder scientists, who calculated the calcification rate of marine organisms in the Southern Ocean.

According to the scientists there has been a 24 percent decline in the amount of calcium carbonate produced in large areas of the Southern Ocean over the past 17 years. Continue reading


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