Featured Research

from universities, journals, and other organizations

Atmospheric Carbon Dioxide Levels Highest On Record

Date:
November 4, 2006
Source:
World Meteorological Organization
Summary:
In 2005, globally averaged concentrations of carbon dioxide in the atmosphere reached their highest levels ever recorded. The World Meteorological Organization's (WMO) 2005 Greenhouse Gas Bulletin, published Nov. 3, says quantities of carbon dioxide were measured at 379.1 parts per million (ppm), up 0.53 per cent from 377.1 ppm in 2004.

Three-dimensional representation of the zonally-averaged latitudinal distribution of atmospheric methane (CH4) mixing ratios for the period 1984-2005. Mixing ratios are given in parts per billion (ppb). A mixing ratio of 1800 ppb, for example, means that among 1 billion air molecules one will find 1800 CH molecules.
Credit: Image courtesy of World Meteorological Organization

In 2005, globally averaged concentrations of carbon dioxide (CO2) in the atmosphere reached their highest levels ever recorded. The World Meteorological Organization's (WMO) 2005 Greenhouse Gas Bulletin, published Nov. 3, says quantities of CO2 were measured at 379.1 parts per million (ppm), up 0.53 per cent from 377.1 ppm in 2004.

After water vapour, carbon dioxide, methane (CH4) and nitrous oxide (N2O) are the three most prevalent greenhouse gases in the Earth's atmosphere respectively. Greenhouse gases are some of the major drivers behind global warming and climate change.

The latest Bulletin precedes WMO's participation at the second meeting of the Parties to the Kyoto Protocol (to reduce greenhouse gas emissions), in conjunction with the twelfth session of the Conference of the Parties to the United Nations Framework Convention on Climate Change, in Nairobi from 6 to 17 November 2006.

Concentrations of N2O also reached record highs in 2005, up 0.19 per cent from 318.6 parts per billion (ppb) to 319.2 ppb while methane remained stable at 1783 ppb.

The 35.4% rise in carbon dioxide since the late 1700s has largely been generated by emissions from the combustion of fossil fuels.

Around one third of N2O discharged into the air is a result of human activities such as fuel combustion, biomass burning, fertilizer use and some industrial processes.

Human activity such as fossil fuel exploitation, rice agriculture, biomass burning, landfills and ruminant farm animals account for some 60% of atmospheric CH4, with natural processes including those produced by wetlands and termites responsible for the remaining 40%.

Accurate atmospheric observations from some 44 WMO Members are archived and distributed by the World Data Centre for Greenhouse Gases (WDCGG), located at the Japan Meteorological Agency.

WMO prepares the Greenhouse Gases Bulletin in cooperation with WDCGG and the Global Atmosphere Watch Scientific Advisory Group for Greenhouse Gases with the assistance of the National Oceanic and Atmospheric Administration's Earth System Research Laboratory.

For the full Bulletin: http://www.wmo.int/web/arep/gaw/ghg/ghgbull06.html


Story Source:

The above story is based on materials provided by World Meteorological Organization. Note: Materials may be edited for content and length.


Cite This Page:

World Meteorological Organization. "Atmospheric Carbon Dioxide Levels Highest On Record." ScienceDaily. ScienceDaily, 4 November 2006. <www.sciencedaily.com/releases/2006/11/061104084951.htm>.
World Meteorological Organization. (2006, November 4). Atmospheric Carbon Dioxide Levels Highest On Record. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2006/11/061104084951.htm
World Meteorological Organization. "Atmospheric Carbon Dioxide Levels Highest On Record." ScienceDaily. www.sciencedaily.com/releases/2006/11/061104084951.htm (accessed April 18, 2014).

Share This



More Earth & Climate News

Friday, April 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drought Concerns May Hurt Lake Tourism

Drought Concerns May Hurt Lake Tourism

AP (Apr. 18, 2014) Operators of recreational businesses on western reservoirs worry that ongoing drought concerns will keep boaters and other visitors from flocking to the popular summer attractions. (April 18) Video provided by AP
Powered by NewsLook.com
Deadly Avalanche Sweeps Slopes of Mount Everest

Deadly Avalanche Sweeps Slopes of Mount Everest

AP (Apr. 18, 2014) At least six Nepalese guides are dead after an avalanche swept the slopes of Mount Everest along a route used to climb the world's highest peak. (April 18) Video provided by AP
Powered by NewsLook.com
The Great British Farmland Boom

The Great British Farmland Boom

Reuters - Business Video Online (Apr. 17, 2014) Britain's troubled Co-operative Group is preparing to cash in on nearly 18,000 acres of farmland in one of the biggest UK land sales in decades. As Ivor Bennett reports, the market timing couldn't be better, with farmland prices soaring over 270 percent in the last 10 years. Video provided by Reuters
Powered by NewsLook.com
Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
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