tinydancer
Diamond Member
I mean come on. This is a huge "whoopsies".
The original calculation is out by 273 million metric tons? And this really makes a difference because of this:
"Hydroelectricity supplies an estimated 20 per cent of the world's electricity and accounts for more than 85 per cent of electricity from renewable sources"
Here's part of the article and I've included a link.
Hydroelectric reservoirs emit about one-sixth of the greenhouse gases previously attributed to them, says an international team of scientists.
They emit 48 million metric tonnes of carbon annually, a downgrade from earlier estimates of 321 million metric tonnes, according to a study of 85 reservoirs published in this week's online version of Nature Geoscience.
"Our analysis indicates that hydroelectric reservoirs are not major contributors to the greenhouse gas problem," Jonathan Cole, a limnologist at New York State's Cary Institute of Ecosystem Studies, said in a release.
"But there are some caveats," he warned. "To date, only 17 per cent of potential hydroelectric reservoir sites have been exploited, and impacts vary based on reservoir age, size, and location."
Hydro reservoirs produce less CO2 than believed - Technology & Science - CBC News
The original calculation is out by 273 million metric tons? And this really makes a difference because of this:
"Hydroelectricity supplies an estimated 20 per cent of the world's electricity and accounts for more than 85 per cent of electricity from renewable sources"
Here's part of the article and I've included a link.
Hydroelectric reservoirs emit about one-sixth of the greenhouse gases previously attributed to them, says an international team of scientists.
They emit 48 million metric tonnes of carbon annually, a downgrade from earlier estimates of 321 million metric tonnes, according to a study of 85 reservoirs published in this week's online version of Nature Geoscience.
"Our analysis indicates that hydroelectric reservoirs are not major contributors to the greenhouse gas problem," Jonathan Cole, a limnologist at New York State's Cary Institute of Ecosystem Studies, said in a release.
"But there are some caveats," he warned. "To date, only 17 per cent of potential hydroelectric reservoir sites have been exploited, and impacts vary based on reservoir age, size, and location."
Hydro reservoirs produce less CO2 than believed - Technology & Science - CBC News