Featured Research

from universities, journals, and other organizations

U.S. Greenhouse Gas Emissions Still Increasing

Date:
December 5, 2008
Source:
U.S. Department of Energy
Summary:
Total U.S. greenhouse gas emissions were 7,282 million metric tons carbon dioxide equivalent (MMTCO 2e) in 2007, an increase of 1.4 percent from the 2006 level according to Emissions of Greenhouse Gases in the United States 2007. Since 1990, U.S. GHG emissions have grown at an average annual rate of 0.9 percent.

Total U.S. greenhouse gas emissions were 7,282 million metric tons carbon dioxide equivalent in 2007, an increase of 1.4 percent from the 2006 level.
Credit: iStockphoto/Karl Dolenc

Total U.S. greenhouse gas (GHG) emissions were 7,282 million metric tons carbon dioxide equivalent (MMTCO 2e) in 2007, an increase of 1.4 percent from the 2006 level according to Emissions of Greenhouse Gases in the United States 2007, according to a report released December 4 by the Energy Information Administration (EIA). Since 1990, U.S. GHG emissions have grown at an average annual rate of 0.9 percent.

U.S. GHG emissions per unit of gross domestic product (GDP), or U.S. GHG intensity, fell from 636 metric tons per million 2000 constant dollars of GDP (MMTCO 2e/million dollars GDP) in 2006 to 632 MMTCO 2e /million dollars GDP in 2007, a decline of 0.6 percent. Since 1990, the annual average decline in GHG intensity has been 1.9 percent.

Total estimated U.S. GHG emissions in 2007 consisted of 6,022 million metric tons of carbon dioxide (82.6 percent of total emissions); 700 MMTCO 2e of methane (9.6 percent of total emissions); 384 MMTCO 2e of nitrous oxide (5.3 percent of total emissions); and 177 MMTCO 2e of hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF 6) (2.4 percent of total emissions).

Emissions of carbon dioxide from energy consumption and industrial processes, which had risen at an average annual rate of 1.1 percent per year from 1990 to 2006, increased by 1.3 percent in 2007. Unfavorable weather patterns, where both heating and cooling degree-days were higher in 2007 than 2006, and an increase in the carbon intensity of electricity generation, driven by decreased availability of hydropower, both contributed to higher energy-related carbon dioxide emissions in 2007. Methane emissions increased by 1.9 percent, while nitrous oxide emissions rose by 2.2 percent. Emissions of HFCs, PFCs, and SF6, a group labeled collectively as “high-GWP gases” because of their high heat-trapping capabilities, increased by 3.3 percent.

The full report can be found on EIA's web site at: http://www.eia.doe.gov/oiaf/1605/ggrpt/index.html


Story Source:

The above story is based on materials provided by U.S. Department of Energy. Note: Materials may be edited for content and length.


Cite This Page:

U.S. Department of Energy. "U.S. Greenhouse Gas Emissions Still Increasing." ScienceDaily. ScienceDaily, 5 December 2008. <www.sciencedaily.com/releases/2008/12/081204093041.htm>.
U.S. Department of Energy. (2008, December 5). U.S. Greenhouse Gas Emissions Still Increasing. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2008/12/081204093041.htm
U.S. Department of Energy. "U.S. Greenhouse Gas Emissions Still Increasing." ScienceDaily. www.sciencedaily.com/releases/2008/12/081204093041.htm (accessed July 30, 2014).

Share This




More Matter & Energy News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
Smartphone Powered Paper Plane Debuts at Airshow

Smartphone Powered Paper Plane Debuts at Airshow

AP (July 30, 2014) Smartphone powered paper airplane that was popular on crowdfunding website KickStarter makes its debut at Wisconsin airshow (July 30) Video provided by AP
Powered by NewsLook.com
U.K. To Allow Driverless Cars On Public Roads

U.K. To Allow Driverless Cars On Public Roads

Newsy (July 30, 2014) Driverless cars could soon become a staple on U.K. city streets, as they're set to be introduced to a few cities in 2015. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile: iPhone Android Web
      Follow: Facebook Twitter Google+
      Subscribe: RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins