Author: dragon8

Not Global Warming - Volcanoes Under The Arctic Ice [Copy link] 中文

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Post time 2017-1-15 15:46:45 |Display all floors
emanreus Post time: 2017-1-13 23:07
Roger roger

Canada is ranked as the world's eighth largest emitter of greenhouse gases and is a large emitter given its population and is missing its Kyoto targets.

When the U.S. imported more of the oil from the tar sands in Canada, the U.S. ended up with a huge pile of petcoke in their own backyard.
There's no way to use them, so they actually export them to different countries including China.

In an industrial furnace, Petcoke behaves like coal, but in the atmosphere its emissions behave worse than coal's. Petcoke emits 11 percent more greenhouse gases than coal.
Sulfur dioxide offsets the warming effect of greenhouse gases, but the offset is relatively short lived before sulfur dioxide drops out of the atmosphere and creates health problems in China's cities, while Petcoke's higher greenhouse gas content lingers.
This has not been recognized by the Chinese government as a major source...

China burns about 4 billion tons of coal annually, but petcoke contains 3 to 7 times more sulfur.
The Chinese are not the only ones overlooking petcoke.
These additional carbon emissions from petcoke have not historically been figured fully into calculations of the climate impacts of extra-heavy oils, such as those from Canadian oil sands.

Many thanks to Jeff McMahon, based in Chicag.

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Post time 2017-1-16 11:17:19 |Display all floors
seneca Post time: 2016-12-31 08:24
I  agree  too,  but that does not mean we can stop all remedying actions designed to stop air poll ...

When the U.S. imported more of the oil from the tar sands in Canada, the U.S. ended up with a huge pile of petcoke in their own backyard.
There's no way to use them, so they actually export them to different countries including China.

In an industrial furnace, Petcoke behaves like coal, but in the atmosphere its emissions behave worse than coal's. Petcoke emits 11 percent more greenhouse gases than coal.
Sulfur dioxide offsets the warming effect of greenhouse gases, but the offset is relatively short lived before sulfur dioxide drops out of the atmosphere and creates health problems in China's cities, while Petcoke's higher greenhouse gas content lingers.
This has not been recognized by the Chinese government as a major source...

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Post time 2017-11-14 12:33:08 |Display all floors
Saul Post time: 2017-1-13 19:29
Well, that along with man's activities is changing the climate.

Finally, the fog, smog and media cover-up got lifted...

Thanks to the British Antarctic survey and published in the journal Geophysical Research Letters.
The best map yet produced of the warmth coming up from the rocks underneath the Antarctic ice sheet.

The heat coming from the Earth’s interior is important to understand the overall conditions that control the dynamics at the base of the ice sheet and hence the ice flow,” explained Yasmina Martos, currently affiliated to the US space agency.

"If this heat flux is elevated, the ice base can melt and produce water that acts as a sliding film.

"One result of our study is that the heat flux is higher underneath West Antarctica, where more ice is currently melting, than underneath East Antarctica.

"Even a little melting at the base helps the ice sheet to slide faster...

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Post time 4 DayEarlier |Display all floors
emanreus Post time: 2017-11-13 23:33
Finally, the fog, smog and media cover-up got lifted...

Thanks to the British Antarctic survey a ...

warmth coming up from the rocks underneath the Antarctic ice sheet.
Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured. Mark Twain

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Post time 4 DayEarlier |Display all floors
Permafrost thawing faster than previously thought, new study says
New estimate says permafrost is 20% more sensitive to warming than models suggest
By Jimmy Thomson, CBC News Posted: Apr 13, 2017 6:00 AM CT



A new paper suggests permafrost may be in danger of thawing much faster than previously estimated.

The study, published in the journal Nature Climate Change, looked at the rate at which permafrost disappeared between 1960 and 1990 instead of relying on models, and found that it is 20 per cent more sensitive to warming than models predict.

"Previous estimates could range from a really very large permafrost loss to a very small permafrost loss in the future," says lead author Sarah Chadburn.

"What we've done is reduced that range, and we've ended up with something that's towards the high end of what was estimated from previous studies."

The paper concluded that for every degree Celsius of warming, about four million square kilometres of permafrost is lost. Over the baseline period from 1960 to 1990, there was around 15 million square kilometres of permafrost worldwide.

For an optimistic climate scenario in which warming is maintained at 1.5 C above pre-industrial levels, Chadburn estimates 4.8 million square kilometres would be lost, with the ice generally moving north. A darker, business-as-usual scenario and associated warming of 5 C would leave the world with a maximum of 1.5 million square kilometres, an area about the size of Mongolia.

That could mean disaster for the landscape and hydrology of the North, putting cities and roads at risk across the high-latitude regions of the Northern Hemisphere.

"It is very urgent," says Hugues Lantuit, a French geomorphologist who was not involved in the paper. Lantuit specializes in the erosion effects of thawing permafrost, working out of a field station on Herschel Island in the Beaufort Sea.

"When the ice melts in the permafrost, it leads to dramatic changes in the landscape… Basically, the ice is what's holding the coast together," he says.

Warming permafrost would also dump methane into the atmosphere, further accelerating warming and causing feedback loops as more and more of the remaining permafrost begins to decompose.
Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured. Mark Twain

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Post time 3 DayEarlier |Display all floors
Saul Post time: 2017-11-20 23:48
Permafrost thawing faster than previously thought, new study says
New estimate says permafrost is 20 ...

Blame it on volcanoes - those that are spewing out hot lava in certain Western think tanks...

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Post time 3 DayEarlier |Display all floors
Saul Post time: 2017-11-20 21:55
warmth coming up from the rocks underneath the Antarctic ice sheet.

This is the best map yet produced of the warmth coming up from the rocks underneath the Antarctic ice sheet.
This "geothermal heat flux" is key data required by scientists in order to model how the White Continent is going to react to climate change.

http://www.bbc.com/news/science-environment-41972297

https://www.science.gov/topicpages/v/volcano+monitoring+networks

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