Greenhouse | What Are Greenhouse Gases? greenhouse gases are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths http://www.greenhouse.nsw.gov.au/what_is_climate_change/what_are_greenhouse_gase
The Greenhouse Effect To attempt to quantify the effects of greenhouse gases on the global temperature, The action of carbon dioxide and other greenhouse gases in trapping http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/grnhse.html
Extractions: Greenhouse Effect The greenhouse effect refers to circumstances where the short wavelengths of visible light from the sun pass through a transparent medium and are absorbed, but the longer wavelengths of the infrared re-radiation from the heated objects are unable to pass through that medium. The trapping of the long wavelength radiation leads to more heating and a higher resultant temperature. Besides the heating of an automobile by sunlight through the windshield and the namesake example of heating the greenhouse by sunlight passing through sealed, transparent windows, the greenhouse effect has been widely used to describe the trapping of excess heat by the rising concentration of carbon dioxide in the atmosphere. The carbon dioxide strongly absorbs infrared and does not allow as much of it to escape into space. Sunlight warms your car Increasing atmospheric carbon dioxide Global warming Role in the absence of water on Venus? A major part of the efficiency of the heating of an actual greenhouse is the trapping of the air so that the energy is not lost by convection . Keeping the hot air from escaping out the top is part of the practical "greenhouse effect", but it is common usage to refer to the infrared trapping as the "greenhouse effect" in atmospheric applications where the air trapping is not applicable.
Leading Corporations Cutting Greenhouse Gases » Earth 911 Washington, D.C.EPA is today commending more than 150 businesses for working to reduce their greenhouse gas (GHG) emissions and advance the nations http://earth911.org/blog/2007/12/04/leading-corporations-cutting-greenhouse-gase
Extractions: Recommended by the CoVis Program: Learning through Collaborative Visualization - Enhancing science learning to provide authentic experiences in the practice of science CoVis Program . Review by Dr. Jonathan D. W. Kahl, Director UWM CoVis Project, Assoc Professor, Atmospheric Science Name of Product: Global Warming: Understanding Greenhouse Gases
Office Of Policy And Internal Affairs You are here PI greenhouse gases Reporting Guidelines. OPIA Title. Enhancing DOE s Voluntary Reporting of greenhouse gases (1605(b)) Program http://www.pi.energy.gov/enhancingGHGregistry/index.html
Extractions: Biological Sciences Carbon Sequestration Chemical Science Climate Change More... Bioenergy Coal Electric Power Fossil Fuels More... Buildings ENERGY STAR Financing Homes More... Climate Change Facilities Oversight More... Annual Energy Outlook Annual Energy Review Ask An Expert Cyber Security Facility Security Nuclear Security More... Chemical Safety Chronic Berylium Disease Facility Safety Nuclear Safety More... For more information on the revised Technical Guidelines click here Future Amendments to the Guidelines: In the future, DOE will consider amendments to the guidelines in response to specific proposals or when it conducts the periodic reviews provided for in 10 CFR 300.1(f). Specific proposals for amendments to the General Guidelines or the Technical Guidelines should be made in writing to Karen Harbert, Assistant Secretary for Policy and International. Hard copies should be sent to 1000 Independence Ave., S.W., Washington, D.C., 20585, and electronic copies should be sent to:
Topic: Greenhouse Gases | World Resources Institute WRI s goal is to protect the global climate system from further harm due to emissions of greenhouse gases and help humanity and the natural world adapt to http://www.wri.org/topics/greenhouse-gases
Extractions: @import "/sites/default/files/css/e2edf6836107d748e0626d91d8b8d744.css"; @import "/sites/default/themes/wri_main/print.css"; World Resources Institute WRI's goal is to protect the global climate system from further harm due to emissions of greenhouse gases and help humanity and the natural world adapt to unavoidable climate change.
ARM Education - Studyhall: About ARM greenhouse gases are atmospheric gases that trap infrared radiation emitted from Most of the significant greenhouse gases are longlived and well-mixed. http://education.arm.gov/studyhall/globalwarming/expertgas.stm
Extractions: Home What are Greenhouse Gases? Greenhouse gases are atmospheric gases that trap infrared radiation emitted from the earth, lower atmosphere, or clouds or aerosols and, as a result, cause positive radiative forcing (which means they enhance global warming). Many of these gases are naturally occurring and are essential to life on earth by providing a blanket for marine and terrestrial organisms. Without them, temperatures on earth would be intolerably cold. However, when their concentrations become too high, they may contribute to global warming to such an extent that they would make the earth intolerably hot. Nature has maintained these gases in the 'tolerable' range for billions of years, but human activities have been changing the concentrations of these gases since the start of the industrial revolution, around 1850. Greenhouse gases may be described as Long-lived, which means they are stable and, therefore, last years in the atmosphere
Clean Air World One of the key contributors to global warming is the increased emissions of greenhouse gases (GHGs). When solar radiation passes into the Earths atmosphere http://www.cleanairworld.org/TopicDetails.asp?parent=2
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Extractions: (100 Year Time Horizon) GAS GWP Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O) Hydrofluorocarbons HFC-23 HFC-125 HFC-134a HFC-143a HFC-152a HFC-227ea HFC-43-10mee Fully Fluorinated Species The concept of global warming potential (GWP) was developed to compare the ability of each GHG to trap heat in the atmosphere relative to another gas. In this case, CO2 is the reference case. Methane, for example, has a GWP of 23 over a 100-year period. This means that on a kilogram for kilogram basis, methane is 23 times more potent than CO2 over a 100-year period. (IPCC Third Assessment Report) Other greenhouse gases cover a broad array of gases other than CO2, principally methane (CH4), nitrous oxide (N2O), sulfur hexaflouride (SF6), and other chemicals that are effective global warmers. These other GHGs are more potent as energy absorbers than CO2 (per unit weight) and have cumulatively contributed between one-fifth and one-third of the total estimated global warming potential since pre-industrial times. Therefore, reducing non-CO2 GHG emissions is an important component of any GHG mitigation strategy.
World Data Centre For Greenhouse Gases (WDCGG) The World Data Centre for greenhouse gases (WDCGG) is one of the WDCs under the GAW programme, and to gather, archive and provide data for greenhouse gases http://gaw.kishou.go.jp/wdcgg.html
Global Warming Facts And Our Future - Causes Of Change - Carbon This diagram shows the relative importance of the major humanproduced greenhouse gases to current warming. CO2 is the most important followed in descending http://www.koshland-science-museum.org/exhibitgcc/causes02.jsp
Access : Greenhouse-gas Levels Accelerating : Nature News Levels of greenhouse gases are rising faster this decade than they did during the 1990s, according to a new analysis. The research blames the acceleration http://www.nature.com/uidfinder/10.1038/news.2007.186
Extractions: Search This site All of nature.com Advanced search To read this story in full you will need to login or make a payment (see right). Published online 22 October 2007 News Decline in oceans' ability to store carbon partly to blame, study suggests. Michael Hopkin Levels of greenhouse gases are rising faster this decade than they did during the 1990s, according to a new analysis. The research blames the acceleration on a combination of factors, including economic growth, intensive fossil-fuel use and, perhaps most worringly, an apparent decline in the oceans' ability to suck up carbon dioxide from the atmosphere. To read this story in full you will need to login or make a payment (see right). Reader comments are usually moderated after posting. If you find something offensive or inappropriate, you can speed this process by clicking 'Report this comment' (or, if that doesn't work for you, email redesign@nature.com). For more controversial topics, we reserve the right to moderate before comments are published.
Atmospheric Greenhouse Gases These gases are commonly referred to as greenhouse gases , and the most important ones that may be influenced directly by human activity are carbon dioxide http://vathena.arc.nasa.gov/curric/land/global/greenhou.html
Extractions: Certain trace gases in the atmosphere maintain the Earth's temperature at the average level that we have today. These gases are commonly referred to as "greenhouse gases", and the most important ones that may be influenced directly by human activity are carbon dioxide, methane, nitrous oxide, and CFC's - chlorinated fluorocarbons such as Freon. In addition, water vapor is a powerful greenhouse gas, but its concentration depends mainly on evaporation and rainfall, not on human activity. All these constituents are distributed in the atmosphere from the surface to high altitude. Incoming radiation energy from the Sun, mostly visible light, penetrates the atmosphere and reaches the Earth's surface, where it is partly absorbed. The heated surface radiates some energy back to space, but at infrared wavelengths, much longer than visible light. The figure shows the path of radiation. The greenhouse gases in the atmosphere transmit the incoming visible light, but stop some of the outgoing infrared, trapping it between the atmosphere and the surface. The name "greenhouse" comes from analogy with a glass greenhouse for plants. Here the visible solar radiation penetrates the glass, but some of the infrared re-emitted by the interior of the greenhouse is trapped by the glass and allows the interior air of the greenhouse to be maintained at a comfortably warm temperature. (The interior of a car in the summer is similar.) Of course a greenhouse also keeps plants warm by sheltering them from the wind, which is a different effect.
Statistics Finland - Statistics By Topic - Greenhouse Gases According to preliminary data calculated by Statistics Finland, greenhouse gas emissions in Finland totalled approximately 80 Mt of CO2 equivalent, http://www.stat.fi/til/khki/index_en.html
Extractions: According to preliminary data calculated by Statistics Finland, greenhouse gas emissions in Finland totalled approximately 80 Mt of CO2 equivalent, which is 13 per cent more than in the base year of the Kyoto Protocol. Under the Kyoto Protocol, the base year for Finland is 1990, with the exception of so-called F-gases (HFCs, PFCs and SF6) for which the base year is 1995. In the base year, emissions in Finland totalled 71 Mt of CO2 equivalent. Next release: 18 Apr 2008 Description: Annual reporting of emissions of the greenhouse gases specified in the Kyoto Protocol to the Secretariat of the UNFCCC comprises emission calculations in a common form (CRF tables) and a related background report (National Inventory Report). Statistics Finland is the national entity responsible for the greenhouse gas inventory in Finland.
Climate Change 2001: The Scientific Basis 4.2.6.1 Laboratory data and the OH lifetime of greenhouse gases 4.2.6.2 Atmospheric measurements and modelling of photochemistry http://www.grida.no/climate/ipcc_tar/wg1/127.htm
Science Projects - Greenhouse Effect The gases formed by the burning, such as carbon dioxide, are building up in the atmosphere. They act like greenhouse glass. The result, experts believe, http://www.energyquest.ca.gov/projects/greenhouse.html
Extractions: The Earth's climate has changed many times in the past. Subtropical forests have spread from the south into more temperate (or milder, cooler climates) areas. Millions of years later, ice sheets spread from the north covering much of the northern United States, Europe and Asia with great glaciers. Today, nearly all scientists believe human beings are changing the climate. How can that be? Over the past few centuries, people have been burning more amounts of fuels such as wood, coal, oil, natural gas and gasoline. The gases formed by the burning, such as carbon dioxide, are building up in the atmosphere. They act like greenhouse glass. The result, experts believe, is that the Earth heating up and undergoing global warming . How can you show the greenhouse effect?
Greenhouse Gas Emissions | Climate Change | U.S. EPA Prepared annually by EPA, the national greenhouse gas inventory report presents estimates of U.S. greenhouse gas emissions and sinks for the years 1990 http://www.epa.gov/climatechange/emissions/index.html
Extractions: @import 'http://www.epa.gov/epafiles/s/epa.css'; Jump to main content. Climate Change - Greenhouse Gas Emissions Contact Us Search: All EPA This Area Related Links EPA Greenhouse Gas Equivalencies Calculator ... IPCC's National Greenhouse Gas Inventories Programme UNFCCC Greenhouse Gas Emissions Overview Inventories ... 2007 Inventory of Greenhouse Gas Emissions and Sinks Prepared annually by EPA, the national greenhouse gas inventory report presents estimates of U.S. greenhouse gas emissions and sinks for the years 1990 through 2005. This report also discusses the methods and data used to calculate the emission estimates. Greenhouse Gas Overview climate change science home page Some greenhouse gases such as carbon dioxide occur naturally and are emitted to the atmosphere through natural processes and human activities. Other greenhouse gases (e.g., fluorinated gases) are created and emitted solely through human activities. The principal greenhouse gases that enter the atmosphere because of human activities are: Carbon Dioxide (CO Methane (CH : Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
Greenhouse Gas (GHG) Information greenhouse Gas (GHG) Monitoring, Accounting and Reporting encompasses the institutional, legal and procedural arrangements necessary to ensure that Canada http://www.ec.gc.ca/pdb/ghg/ghg_home_e.cfm
Extractions: Home Monitoring, Accounting and Reporting on Greenhouse Gases Greenhouse Gas (GHG) Monitoring, Accounting and Reporting encompasses the institutional, legal and procedural arrangements necessary to ensure that Canada meets its United Nations Framework Convention on Climate Change (UNFCCC) and Kyoto Protocol reporting obligations, that quality inventories are prepared, and that proper documentation and archiving occurs in order to facilitate third party review and to assess compliance with UNFCCC reporting obligations and with Canada's Kyoto Protocol target. This site features a variety of information on GHGs , the greenhouse effect FAQs data tables of Canada's GHG emissions, and all the latest information and tools you need for measuring, verifying and reporting facility GHG emissions. There are two main sources of information for GHG emissions available on this website. The first is the National Inventory Report (NIR) which contains GHG emissions data at the national, provincial and sectoral levels and is submitted to the United Nations Framework Convention on Climate Change (UNFCCC) annually. This is the source to be used for all-inclusive national and provincial totals. The second source is the GHG Emissions Reporting program . The GHG emissions reporting program specifically targets facilities in Canada that emit the equivalent of 100,000 tonnes or more of Greenhouse Gases (in CO