Coral Davenport
In a New York Times Earth Day story, the usually excellent Coral
Davenport grossly
misrepresents
the Keystone XL tar-sands pipeline’s true impact on global warming, and
questions the wisdom of pipeline opponents like the activists now
encamped on the National
Mall.
The pipeline is intended to ship upwards of 830,000 barrels of tar-sands
crude a day for a 40-year lifespan. The pipeline will add 120-200
million
tons
of carbon-dioxide-equivalent to the atmosphere annually, with a lifetime
footprint of 6 to 8 billion tons CO2e. That’s as much greenhouse
pollution as 40 to 50 average U.S. coal-fired power plants. Furthermore
the Keystone XL pipeline is recognized by the tar-sands industry as a
key spigot for the future development of the Alberta tar sands, which
would emit 840 billion tons
CO2e
if fully exploited.
Interviewing Washington insiders who have offered various forms of
support for the Keystone XL project, Davenport claims instead that
“Keystone’s political symbolism vastly outweighs its policy substance.”
To support the claim, Davenport then erroneously underestimates the
global warming footprint of the pipeline by a factor of ten. Davenport’s
crucial error is to contrast the actual carbon footprint of existing
fossil-fuel projects — such as US electric power plants (2.8 billion
tons) and tailpipe emissions (1.9 billion) — to the impact of the
pipeline’s oil being dirtier than traditional petroleum, without
explaining that she was switching measurements:
Consider the numbers: In 2011, the most recent year for which
comprehensive international data is available, the global economy
emitted 32.6 billion metric tons of carbon [dioxide] pollution. The
United States was responsible for 5.5 billion tons of that (coming in
second to China, which emitted 8.7 billion tons). Within the United
States, electric power plants produced 2.8 billion tons of those
greenhouse gases, while vehicle tailpipe emissions from burning
gasoline produced 1.9 billion tons.
By comparison, the oil that would move through the Keystone pipeline
would add 18.7 million metric tons of carbon [dioxide] to the
atmosphere annually, the E.P.A. estimated.
[There are two side errors in the passage: Davenport uses “tons of
carbon” where she means “tons of carbon dioxide equivalent”. One ton of
carbon is the equivalent of 3.67 tons of carbon dioxide. All of her
numbers refer to tons of carbon dioxide-equivalent. Secondly, the
estimate was not made by the E.P.A. but by a State Department contractor
hired by TransCanada; the E.P.A.
cited
that analysis but did not make the calculations.]
What the oil-industry contractor for the State Department actually
calculated is that the oil that would move through the Keystone pipeline
would add 147-168 million metric tons of carbon
dioxide
to the atmosphere annually, 1.3 to 27.4 million of which (central
estimate 18.7
million
from the draft assessment) are because tar-sands crude is dirtier than
other petroleum sources. Those 18.7 million tons are the “incremental”
or “additional” footprint of the pipeline, not the full 160 million-ton
footprint.
Based on this order-of-magnitude measurement-switching error, Davenport
incorrectly concludes that “the carbon emissions produced by oil that
would be moved in the Keystone pipeline would amount to less than 1
percent of United States greenhouse gas emissions, and an infinitesimal
slice of the global total.”
In fact, the carbon dioxide emissions produced by oil that would be
moved in this single pipeline would amount to 3 percent of U.S.
greenhouse gas emissions, and half a percent of the global carbon
footprint. Only thirty-two
countries
have larger annual footprints than this single tar-sands project.
Climate scientist John Abraham made this point in The Guardian last
week. “People who think Keystone is a minor issue don’t understand
science and they sure don’t understand economics,” he wrote.
Jason Bordoff
How on earth could Davenport and the pipeline supporters she cites —
Michael
Levi
of the Council on Foreign Relations, Kevin
Book of the
fossil-industry consultancy ClearView Energy Partners, former Obama
White House climate advisor Jason
Bordoff
of Columbia University’s Center on Global Energy Policy, Adele
Morris
of the Brookings Institution, and fossil-industry lobbyist David
Goldwyn (a former
advisor for Secretary of State Hillary Clinton and also a Brookings
fellow) — make this basic and outsized mistake?
Putting aside any possible political and economic motivations to support
the intentions of the global petroleum industry, the intellectual
failure rests on an obvious error made subtle through convolution.
Whether one is looking at actual or incremental footprints of
carbon-infrastructure projects, the results should be equivalent from a
policy standpoint, although the numbers would be different. Why, then,
does the incremental analysis used by the EPA
and the State Department’s oil-industry contractors appear to give the
absurd result that the Keystone XL impact is “infinitesimal”?
The methodology of incremental footprint analysis assumes a baseline of
future projected carbon pollution, and then looks whether a given
project would increase or decrease the baseline. The validity of
incremental-footprint analysis thus depends on the baseline.
In line with scientific warnings, President Barack Obama and the U.S.
State Department have committed to limiting global warming to below 2°C
above pre-industrial levels. In the International Energy Agency’s 2°C
scenario,
global oil consumption would fall by 50
percent from current
levels by 2050, within the intended operating lifetime of the Keystone
XL pipeline.
The Keystone XL final environmental impact statement instead
assumes
that global oil demand will increase over that time period. The baseline
used is the Energy Information Administration’s 2013 Annual Energy
Outlook, which projects that global oil consumption will increase by 30
to 40
percent
by 2040. In that scenario, the world would be on a pathway for rapid and
catastrophic global warming of 4 to 6°C (or greater) by 2100.
No matter the analysis, the Keystone XL pipeline is incompatible with
climate security. The global-warming impact of constructing Keystone XL
is only “infinitesimal” if you assume catastrophic global warming is
inevitable and that the signed climate pledges of the United States
government are worthless.
Perhaps Ms. Davenport should ask Levi, Book, Bordoff, Morris, and
Goldwyn if that is their assumption.
Update May 2: The Times has posted a correction:
Correction: May 2, 2014
An article and an accompanying chart on April 22 comparing the
projected Keystone XL pipeline with other sources of carbon emissions
referred imprecisely to projected emissions from tar-sands oil moving
through the pipeline. Producing and burning that oil would emit 18.7
million more metric tons annually than would conventional oil, or far
less than 1 percent of United States emissions, according to the
Environmental Protection Agency. The tar-sands oil would not emit 18.7
million tons total, but about 150 million tons, or less than 3 percent
of United States emissions.
The correction itself is in error; the estimate of 18.7 million metric
tons is not from the E.P.A., but is from the draft assessment prepared
by TransCanada contractor Environmental Resources Management for the
State Department.