Post by M I Wakefield Post by gordo
The earth is heating up and some places quicker than others.
You mention caribou and if you think the story is wrong,provide a link to
Post by M I Wakefield
Did the point make a whooshing sound as it flew by your head, Gordon?
More likely it was your usually hot air he heard.
Alberta's tarsands are the single, largest polluter of Canada's environment - particularly of the north where all the damage is occurring.
*That's* why scientists have now determined that 'Canada is warming twice as fast as any other country'. Alberta's tarsands. Ya know . . . the place that Jason Kenney wants to expand and exploit for profit even more?
New Tar Sands Impact on Climate, Air Quality Found
Aerosols from the production of heavy oil is a growing climate and pollution concern because new tar sands developments are on the drawing board in Venezuela, Utah and elsewhere, the study says. Today, heavy oil accounts for 10 percent of global crude oil production worldwide, mostly in Canada, which produced about 1.1 billion barrels of oil in 2014.
“The results indicate that the environmental impacts of Canadian tar sands are much larger than previously recognized,” said Allen Robinson, a mechanical engineering professor at Carnegie Mellon University who is unaffiliated with the study. “What is so novel about this paper is that tar sands were not on anybody’s radar as a major source of aerosol.”
Using aircraft to measure air pollution over the Alberta tar sands region, the researchers found that tar sands production emitted between 55 and 101 metric tonnes of secondary organic aerosols per day. That’s comparable to aerosol pollution measured downwind of major cities such as Mexico City and Paris and greater than the pollution measured near Tokyo and the Northeast U.S.
Aerosols in urban air pollution and from major industries such as the Canadian tar sands are of concern to scientists because they can affect regional climate patterns and have helped to warm the Arctic.
In a separate study published Wednesday, researchers at the RIKEN Advanced Institute for Computational Science in Japan, said aerosols in the Arctic have a “profound” impact on the global climate system.
Tar sands study co-author Shao-Meng Li, a senior research scientist at Environment and Climate Change Canada, said that in highly-polluted regions, some organic aerosols can prevent clouds from forming. The atmosphere warms when there are fewer clouds to reflect sunlight.
Other aerosols can bring about temporary atmospheric cooling, mainly by seeding clouds that linger in the atmosphere longer than they normally would, or by scattering light. That cooling can have a profound impact on regional climate.
“The results of this study are one piece of the puzzle to understand the overall environmental and climate impacts of the oil sands operations,” he said.
Scientists say that even though the cooling effect from aerosols is real, the biggest climate challenge from the tar sands is their carbon dioxide emissions.
“The real climate issue is the carbon intensity of the process,” Robinson said.