Ninety climate change experts from around the world urged Canadian government officials to "take urgent action" and reject a proposed, "unjustified" liquid natural gas (LNG) export terminal to be built on the British Columbia coast, joining with fierce local Indigenous opposition to the controversial project.

"The carbon emissions of the proposed PNW LNG terminal and associated upstream natural gas development would be 'high in magnitude, continuous, irreversible and global in extent.'"

In an open letter (pdf) dated Thursday, the scientists warned "that the B.C. project would belch out emissions rivaling a large plant in Alberta’s oil sands," the Globe and Mail reported Monday.

The export terminal, known as the Pacific Northwest LNG (PNW LNG) project, "poses serious risks" to the Canada's climate change commitments—particularly those made at last year's Paris accord, the scientists argue:

The challenges to BC and Canada’s efforts to reduce GHG emissions will be exacerbated because of two issues: 1) the international agreement on climate change reached in Paris will require Canada to increase its ambition to reduce GHG emissions over time (and this requirement is embedded within the Vancouver Declaration signed by the Prime Minister and the premiers on March 3); and 2) the methane emissions from upstream gas included in the draft Environmental Assessment report likely underestimate the true contribution of emissions from the project.

Point by point, the letter writers critique proponents' arguments in favor of the PNW LNG project. The experts note that: 

• GHG emissions from the project are likely underestimated.
• There is inadequate climate policy to reduce impacts for the project. 
• There is no evidence that LNG from the project will replace coal in Asia.

On this last point, the scientists also note that "LNG will also likely displace nuclear power, renewables, and natural gas from other sources in many importing countries. There are many locations where LNG consumption would be additional to coal consumption, instead of replacing it. Importantly, GHG emissions from fracking, transport, liquefaction, and regasification significantly reduce LNG’s GHG benefits over coal."

Moreover, the letter continues:

The Canadian Environmental Assessment Agency has found that the carbon emissions of the proposed PNW LNG terminal and associated upstream natural gas development would be "high in magnitude, continuous, irreversible and global in extent." Their research finds the project will emit at least 11.5 million tonnes of CO2 per year, not including downstream emissions when the gas is burned in Asia.

Finally, the scientists put forth an argument seemingly applicable to many fossil fuel projects being debated in North America today:

"Honoring the commitment Canada made in Paris to limit global warming to well below 2.0 degrees above pre-industrial levels will require a massive effort to reduce emissions," the letter concludes. "We must begin by rejecting plans that would increase GHG emissions and lock us in fossil fuel extraction for decades to come."