Displaying items by tag: climate change appalachia
OAK RIDGE — Researchers from Oak Ridge National Laboratory and Northeastern University modeled how extreme conditions in a changing climate affect the land’s ability to absorb atmospheric carbon — a key process for mitigating human-caused emissions. They found that 88 percent of Earth’s regions could become carbon emitters by the end of the 21st century.
Climate extremes lasting months or years could reduce plant productivity, which governs Earth’s capacity to produce food, fiber and fuel. Events such as wildfires could generate bursts of emissions from carbon stored in forests.
The team used the open-source Community Earth System Model to simulate multiple variables, which enabled a holistic understanding of how climatic conditions interact.
“Our results suggest that meteorological extremes will become more frequent, intense and widespread due to the compound effect of high temperature, drought and fire,” said ORNL’s Bharat Sharma. “Tropical regions may face these to the most extreme degree.”
-Oak Ridge National Laboratory
Citizens call on TVA to stop passing gas
KNOXVILLE — The Tennessee Valley Authority in coming years plans to add both natural gas and solar plants to its portfolio to meet what it says are rising energy demands.
TVA’s Board of Directors laid out the federal utility’s plan in a meeting at Norris Middle School in May. Environmentalists at a previous hearing criticized the utility’s focus on natural gas rather than renewables or other measures. Other people, largely tied to local power providers, argued that a switch to renewable energy would be unreliable.
TVA showed a map in a press release following the meeting, showing four proposed natural gas plants and two proposed solar plants. Two of those natural gas plants would be in Tennessee while the other two are planned for Alabama and Kentucky. It stated these new plants will total 3,800 megawatts. It also spoke of its System Operations Center, set to open in fall 2024 in Georgetown to manage the utility’s grid. TVA also stated a desire to research nuclear technologies.
“Our region is experiencing growth at six times the national average, which means we must invest in our current power system and build new generation so we can continue meeting our region’s demand,” said TVA president and CEO Jeff Lyash.
Several citizens criticized TVA’s focus on natural gas plants and new pipelines at the listening session May 9. Among them was Clinton resident and activist John Todd Waterman.
- tva board
- tva board meeting
- tva climate change
- tva fossil plant
- climate action
- climate change appalachia
- jeff lyash
- system operations center
- natural gas
- natural gas power plant
- natural gas environment
- natural gas bad?
- tva kingston
- tva bull run
- john todd waterman
- tva systems operation center
- dana moran
- sierra club natural gas plant
- mark kimbell
- gallatin department of electricity
- coal plant replacement
- natural gas vs coal
- investment in new fossil fuel infrastructure
- fossil fuel
- fossil fuel industry
- fossil gas power plant
- tennessee valley authority
- climate change
- tva solar energy
- solar energy
- solar energy in tennessee
It’s not just the coastlines that are recording climate change. Even the mountains of North Carolina are feeling the heat — including some endangered plants
“Atlanta reporter Dan Chapman retraced John Muir’s 1867 trek through the South, including the naturalist’s troubling legacy, to reveal environmental damage and loss that’s been largely overlooked.” This is an excerpt published by The Revelator from his book, A Road Running Southward: Following John Muir’s Journey Through an Endangered Land.
BOONE — It’s a wonder anything survives the ice, snow, and winds that pummel the ridge, let alone the delicate-seeming yellow flowers known as spreading avens.
The lovely, long-stemmed perennials are exceedingly rare, officially listed as endangered, and found only in the intemperate highlands of North Carolina and Tennessee. They sprout from shallow acidic soils underlying craggy rock faces and grassy heath balds. At times blasted with full sun, but mostly shrouded in mist, the avens are survivors, Ice Age throwbacks that refuse to die. Geum radiatum is only known to exist in fourteen places, including hard-to-find alpine redoubts reached via deer trail or brambly bushwhacking.
Invasive insects are among the vanguard of noticeable climate changes in America’s most-visited national park
GATLINBURG — Ants scurry beneath the carpet of last year’s leaves in Great Smoky Mountains National Park. The native ants are busy spreading the seeds of violets and bloodroot, preparing a new carpet of spring wildflowers to draw thousands of visitors.
But the local insects aren’t alone under there. They have become prey to venomous Asian needle ants that also prowl the leaf litter.
These invaders dine on termites, other ants and insects, while stealing habitat from them. Unlike invasive fire ants, needle ants can live in pristine forests and build large colonies with hundreds of queens. But like fire ants, needle ants have a painful sting that can trigger an allergic reaction.
Climate change is expected to make it easier for invasive species like needle ants to upset the delicate balance of this temperate rainforest full of rare plants and animals. That’s just one example.
- great smoky mountains
- climate change appalachia
- southern appalachian climate change
- great smoky mountains national park climate change
- needle ant
- are ants affected by climate change
- daniel malagon
- ana barro
- jason fridley
- paul super
- climate precipitation change
- smokies science
- national ecological observatory network
- invasive species
- change in precipitation
- importance of cloud to water balance highelevation ecosystem
- climate change research
- sampling plot