The Environmental Journal of Southern Appalachia

Displaying items by tag: methane emission

Saturday, 23 March 2024 11:53

Federal law helping parks avoid methane release

Inactive but uncapped oil wellMethane emissions, such as those that emanate from this oil well on federal property, are being capped across federal land in the Southeast thanks to a Biden Administration grant.  NPS

Even federally protected areas can be full of old oil and gas wells, and they may need plugging to avoid releasing gas into the air.

ONEIDA — Eric Bruseth of the National Park Service Geologic Resources Division gave a talk on this issue in Historic Rugby at the 2024 Science Meeting, March 13.

Two Tennessee National Park Service areas — Big South Fork National River and Recreation Area near Oneida, straddling the Kentucky state line, and Obed Wild and Scenic River near Wartburg — have over 300 oil and gas wells total throughout the parks. The wells are left over from a time before they were public land. The earliest go back to the 19th century. The danger, Bruseth said, comes from the methane these wells can continue to release.

“Methane as a greenhouse gas can be up to 80 times more potent than carbon dioxide as far as trapping heat in the atmosphere. So smaller sources can have a bigger impact,” Bruseth said.

Published in News

AlewivesAlewives returned by the millions after the Edwards and Ft. Halifax dams were removed in Maine.  John Burrows/ASF via The Revelator

By providing both mitigation and adaption, dam removal can lower greenhouse gas emissions and restore carbon sinks.

This article was originally published in The Revelator. Gary Wockner is an environmental activist, scientist and writer in Colorado.

As the climate crisis escalates, a huge amount of attention and money is being focused on climate solutions.

These can be divided into two categories: solutions that pursue “mitigation,” which lowers greenhouse gas emissions, and those that pursue methods to adapt to climate impacts to increase human and ecological resiliency.

Dams, of course, create enormous environmental harms, many of which have already been described in scientific literature. Equally well documented is the fact that removing dams can restore seriously damaged ecosystems. But missing from almost every climate-solution story and study is how dam removal can be key for both mitigation and adaptation.

Here are 10 reasons how dam removal fights climate change.

Published in News
Thursday, 22 September 2022 12:23

Enviros to TVA: Retire the fossil-fuel pacifier

Cumberland FPTVA’s Cumberland Fossil Plant near Clarksville is the subject of a suit filed by environmental groups, including Appalachian Voices and Southern Environmental Law Center.  Tennessee Valley Authority

SELC, others file suit in hopes of dissuading TVA from future fossil options

This story was originally published by Tennessee Lookout.

CLARKSVILLE — On behalf of the Tennessee Chapter of the Sierra Club and Appalachian Voices, the Southern Environmental Law Center asked TVA to prepare a supplemental environmental statement to address concerns with TVA’s draft environmental impact statement, which details the agency’s plans to retire the Cumberland Fossil Plant.

The Cumberland Fossil Plant, about 22 miles southwest of Clarksville, is TVA’s largest coal-fired power station and was built between 1968 and 1973. TVA plans to retire each unit of the two-unit, coal-fired steam-generation plant separately: one unit no later than 2030, and the second unit no later than 2033. But the plant will need to be replaced, and TVA is currently considering three alternatives to fossil fuel, including natural gas and solar energy, according to its draft EIS.

(Tennessee Valley Authority already plans to close down the Knoxville-area Bull Run fossil plant in Claxton next year).

Published in News
Monday, 11 October 2021 13:17

Permafrost is a ticking methane bomb

Smithsonian: In Russia, even rocks emit greenhouse gases

The melting Siberian tundra north of the Arctic Circle released millions of tons of methane last year as regional temperatures rose to 11 degrees (°F) above average.

Methane has a shorter effect than carbon dioxide on global atmospheric change but is still 70 times more potent than CO2 in its overall global-warming potential. Its accelerated release on such a vast scale represents an immediate challenge to restricting overall global warming to less than 3 degrees (°F) by the end of the century, which scientists agree is necessary to prevent dramatic climate change. Methane’s potent global warming potential is why many conservationists oppose the use of natural gas as an energy source.

But in Siberia, even the rocks are emitting methane. Scientists were surprised to find that limestone exposed by disappearing permafrost itself generated high levels of methane. Tundra fires have also accelerated the release of methane and other gases, and have come at great cost to the Russian government and the rural inhabitants of the vast region.

That means economical and practical means must be developed elsewhere, at least, for methane management.

But according to the United Nations Economic Council for Europe:

“Despite methane’s short residence time, the fact that it has a much higher warming potential than CO2 and that its atmospheric volumes are continuously replenished make effective methane management a potentially important element in countries’ climate change mitigation strategies. As of today, however, there is neither a common technological approach to monitoring and recording methane emissions, nor a standard method for reporting them.“

Published in Feedbag