Hello,

We noticed you're browsing in private or incognito mode.

To continue reading this article, please exit incognito mode or log in.

Not an Insider? Subscribe now for unlimited access to online articles.

Sustainable Energy

Blame the Weather for Last Year’s Rise in U.S. Carbon Dioxide Emissions

Carbon emissions have been trending downward, but not quickly enough to offset fluctuations in weather patterns.

Global carbon dioxide emissions must drastically decrease by midcentury to prevent catastrophic climate change.

A colder winter was one of the main reasons carbon dioxide emissions from energy use rose in the United States by 2.5 percent in 2013, according to new data from the Energy Information Agency. Besides a small rise in the price of natural gas and slightly cheaper coal, the weather played the biggest role in in pushing up emissions, the IEA says.

The new numbers show that fluctuations in weather patterns and relatively small changes in fuel prices are enough to counteract the emissions reductions that have resulted from greater solar and wind power capacity and increased use of cleaner-burning natural gas instead of coal.

Compared with 2012, there were 18 percent more days in 2013 cold enough to cause a spike in demand for energy for heating, says the EIA. This contributed to an 0.5 percent increase in the amount of energy used per dollar of GDP, bucking the trend seen from 2003 to 2012, when that ratio decreased by an average of 2 percent per year.

In addition, the amount of electricity generated using natural gas dropped 10 percent between 2012 and 2013, while coal generation increased by nearly 5 percent. The price of natural gas rose from $3.54 per million BTU in 2012 to $4.49 in 2013, while the price of coal dropped from $2.38 per million BTU to $2.35.

More coal and less gas meant a much smaller drop in the U.S. energy system’s “carbon intensity”—the amount of carbon dioxide emitted per unit of energy produced.

All of this combined to make the carbon intensity of the whole U.S. economy, or the amount of carbon dioxide emitted per million dollars of GDP, rise by 0.2 percent, the first such rise since the global recession, as shown in the chart below.

Want to go ad free? No ad blockers needed.

Become an Insider
Already an Insider? Log in.

Uh oh–you've read all of your free articles for this month.

Insider Premium
$179.95/yr US PRICE

More from Sustainable Energy

Can we sustainably provide food, water, and energy to a growing population during a climate crisis?

Want more award-winning journalism? Subscribe and become an Insider.
  • Insider Plus {! insider.prices.plus !}* Best Value

    {! insider.display.menuOptionsLabel !}

    Everything included in Insider Basic, plus the digital magazine, extensive archive, ad-free web experience, and discounts to partner offerings and MIT Technology Review events.

    See details+

    What's Included

    Unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

    Bimonthly print magazine (6 issues per year)

    Bimonthly digital/PDF edition

    Access to the magazine PDF archive—thousands of articles going back to 1899 at your fingertips

    Special interest publications

    Discount to MIT Technology Review events

    Special discounts to select partner offerings

    Ad-free web experience

  • Insider Basic {! insider.prices.basic !}*

    {! insider.display.menuOptionsLabel !}

    Six issues of our award winning print magazine, unlimited online access plus The Download with the top tech stories delivered daily to your inbox.

    See details+

    What's Included

    Unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

    Bimonthly print magazine (6 issues per year)

  • Insider Online Only {! insider.prices.online !}*

    {! insider.display.menuOptionsLabel !}

    Unlimited online access including articles and video, plus The Download with the top tech stories delivered daily to your inbox.

    See details+

    What's Included

    Unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

/
You've read all of your free articles this month. This is your last free article this month. You've read of free articles this month. or  for unlimited online access.