 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Two New Greenhouse Gases Growing
Canberra, Australia (SPX) Mar 30, 2009 Two new greenhouse gases are accumulating in the atmosphere, according to an international research team led by scientists from the Scripps Institution of Oceanography in the US and CSIRO scientist, Dr Paul Fraser, from the Centre for Australian Weather and Climate Research. Nitrogen trifluoride (NF3) and sulfuryl fluoride (SO2F2) are powerful greenhouse gases that have recently been discovered to be growing quickly in the global background atmosphere. These gases are used in industrial processes, partly as alternatives to other harmful greenhouse and ozone depleting gases. NF3 is used in the electronics industry - often as a replacement for perfluorocarbons (PFCs) - particularly in the manufacture of liquid-crystal flat-panel screens. SO2F2 is used as a replacement for methyl bromide, largely in structural fumigation applications. The new measurements of SO2F2 appear in a paper co-authored by Dr Fraser in the 12 March 2009 edition of the Journal of Geophysical Research. "Information about the abundance of these gases in the atmosphere, their growth rates, lifetimes, and emissions is just emerging," Dr Fraser says. "Currently the level of these gases in the atmosphere is low, but their concentration is growing. In addition, these gases have significant global-warming potential." The first atmospheric observations of these gases from data collected around the world - particularly at Trinidad Head and La Jolla, California, and Cape Grim, Tasmania - will be presented at the GREENHOUSE 2009 conference. "This research is likely to affect the revision of the Kyoto Protocol later this year," Dr Fraser says. "New emissions targets for the existing 'basket' of gases (carbon dioxide, methane, nitrous oxide, PFCs, hydrofluorocarbons, sulfur hexafluoride) are likely, as well as inclusion of the new greenhouse gases. A number of new signatories from the developed and developing world are also included in the revised Protocol." The Centre for Australian Weather and Climate Research is a partnership between CSIRO and the Bureau of Meteorology. Related Links CSIRO Marine and Atmospheric Research Climate Science News - Modeling, Mitigation Adaptation
Dust plays role in warmer global temps: study
Washington (AFP) March 26, 2009A decrease in airborne dust and volcanic emissions has contributed to warming the North Atlantic Ocean in the past three decades, a study showed Thursday. |
|
|
| The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement |
