Navigation Links
Volcanic aerosols, not pollutants, tamped down recent Earth warming, says CU-Boulder study
Date:3/1/2013

ve conflicting results of two recent studies on the origins of the sulfur dioxide in the stratosphere, including a 2009 study led by the late David Hoffman of NOAA indicating aerosol increases in the stratosphere may have come from rising emissions of sulfur dioxide from India and China. In contrast, a 2011 study led by Vernier -- who also provided essential observation data for the new GRL study -- showed moderate volcanic eruptions play a role in increasing particulates in the stratosphere, Neely said.

The new GRL study also builds on a 2011 study led by Solomon showing stratospheric aerosols offset about a quarter of the greenhouse effect warming on Earth during the past decade, said Neely, also a postdoctoral fellow in NCAR's Advanced Study Program.

The new study relies on long-term measurements of changes in the stratospheric aerosol layer's "optical depth," which is a measure of transparency, said Neely. Since 2000, the optical depth in the stratospheric aerosol layer has increased by about 4 to 7 percent, meaning it is slightly more opaque now than in previous years.

"The biggest implication here is that scientists need to pay more attention to small and moderate volcanic eruptions when trying to understand changes in Earth's climate," said Toon of CU-Boulder's Department of Atmospheric and Oceanic Sciences. "But overall these eruptions are not going to counter the greenhouse effect. Emissions of volcanic gases go up and down, helping to cool or heat the planet, while greenhouse gas emissions from human activity just continue to go up."

The key to the new results was the combined use of two sophisticated computer models, including the Whole Atmosphere Community Climate Model, or WACCM, Version 3, developed by NCAR and which is widely used around the world by scientists to study the atmosphere. The team coupled WACCM with a second model, the Community Aerosol and Radiation Model for Atmosphere, or CARMA, which allows re
'/>"/>

Contact: Ryan Neely
ryan.neely@colorado.edu
366-302-4244
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. From grains of volcanic glass to continental rifting: New Geosphere articles now online
2. Shimmering water reveals cold volcanic vent in Antarctic waters
3. Finding life in the volcanic systems of the Antarctic Polar Front
4. Rubbing boulders, fossil mammal teeth, barrier islands, and a change in volcanic behavior
5. Understanding faults and volcanics, plus life inside a rock
6. Recent breakthroughs in cocoa flavanol research discussed by European research consortium and expert panel
7. Recent study suggests bats are reservoir for ebola virus in Bangladesh
8. Invading species can extinguish native plants despite recent reports
9. Recent studies bring fossils and genes together to piece together evolutionary history
10. GEN reports on recent progress in Alzheimers research
11. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Volcanic aerosols, not pollutants, tamped down recent Earth warming, says CU-Boulder study
(Date:7/31/2014)... MANHATTAN Kansas State University researchers have completed ... of burning Flint Hills prairie at different times ... of the current late spring time frame has ... in fact, may have multiple benefits. , The ... and the Konza Prairie Biological Station fire chief, ...
(Date:7/31/2014)... of animal models against the highly infectious and virulent ... disease that kills approximately 30,000 Americans annually. The research ... Immunity . , In the study, the vaccine ... toxins produced by C. difficile , as well ... that mimics the human disease, after only two immunizations. ...
(Date:7/31/2014)... the photovoltaic effect in 1839, humankind has sought to ... its own purposes. In a new research report published ... FASEB Journal , scientists may have uncovered a ... focusing on a naturally occurring combination of lipids that ... over time and across speciessuggests that this specific natural ...
Breaking Biology News(10 mins):Study finds benefits to burning Flint Hills prairie in fall and winter 2Study finds benefits to burning Flint Hills prairie in fall and winter 3C. difficile vaccine proves safe, 100 percent effective in animal models 2Scientists shine bright new light on how living things capture energy from the sun 2
... Drosophila mauritiana , a close relative of the well ... around our fruit bowls in summer. Nolte and colleagues ... the various genes it contains. The information will naturally ... this organism. But the present study goes much, much ...
... wet and dry foods, cats are able to select ... a consistent intake of protein, fat and carbohydrate, i.e. ... of Comparative Physiology B , the research shows that ... selection despite differences in the macronutrient content, moisture level ...
... MD, PhD, Director of the Center for Cell Engineering at ... the effectiveness of a new technique that could allow the ... were reported online today in Nature Biotechnology . ... cells that have been augmented in the laboratory have ...
Cached Biology News:What's in a genome? 2Cats are able to navigate complex combinations of wet and dry foods to achieve a consistent intake of protein, fat and carbohydrate 2New technique could make cell-based immune therapies for cancer safer and more effective 2
(Date:8/1/2014)... Aug. 1. 2014 As one of the ... AACC Annual Meeting & Clinical Lab Expo is the ... care are introduced to the healthcare world. This year, ... 650 exhibitors will include the latest diagnostic technology in ... in smartphones and biosensors have enabled the development of ...
(Date:8/1/2014)... -- The  PROPEL Center  of the  iBIO Institute , ... early-stage life sciences companies in Illinois ... to help Illinois entrepreneurs attend ... Chicago .   AdvaMed 2014 ... America , bringing more than 1,000 companies together ...
(Date:8/1/2014)... (PRWEB) August 01, 2014 Once a ... it cost? This webinar will discuss how to define ... , Join speakers Bob Allen, Senior Director of Facilities ... Process Engineering at Fluor Industrial Services, and special guest ... Asset Planning at Amgen, as they provide an examination ...
(Date:8/1/2014)... Glencoe Software, Inc. is pleased ... ( http://glencoesoftware.com/data-inpress.html ), a suite of data ... into on-line publications.  The suite comprises Glencoe ... Photo - http://photos.prnewswire.com/prnh/20140731/132410   ... The DataViewer is a browser-based ...
Breaking Biology Technology:Lab-on-a-Chip Technology to Be Featured at 2014 AACC Annual Meeting & Clinical Lab Expo 2Lab-on-a-Chip Technology to Be Featured at 2014 AACC Annual Meeting & Clinical Lab Expo 3iBIO Institute's PROPEL Center Awards Grants for AdvaMed 2014 to Early-Stage Life Sciences Companies 2iBIO Institute's PROPEL Center Awards Grants for AdvaMed 2014 to Early-Stage Life Sciences Companies 3iBIO Institute's PROPEL Center Awards Grants for AdvaMed 2014 to Early-Stage Life Sciences Companies 4Defining Low Cost in Your Solution for Future Facilities, New Webinar for Pharma, Biotech, Medical Device and Healthcare Companies, Hosted by Xtalks 2Glencoe Software Launches Data InPress 2Glencoe Software Launches Data InPress 3
... Richard Thieme's new book, Islands in the Clickstream, is a ... in May, Thieme's book has been hailed as extremely insightful ... world of technology and present his thoughts in the context ... in chief of Information Security Magazine, said: This book is ...
... associated with television commercials offering things such as accredited ... For many years, distance education was associated with ... locksmithing and gunsmithing, all earned over the mail, from ... Business has been at the forefront of utilizing ...
... they either dont understand it or they dont feel the ... value of networking and when they should network. , ,For ... (such as a new job or a product to sell). ... a process over time. If done effectively, their needs will ...
Cached Biology Technology:Technology isn't about technology 2Technology isn't about technology 3Technology isn't about technology 4Charter Business powers distance learning 2Charter Business powers distance learning 3Charter Business powers distance learning 4Dispelling the top five myths about attending networking events 2Dispelling the top five myths about attending networking events 3Dispelling the top five myths about attending networking events 4
... (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrasodium bromide), 50mg/vial. MTT is a ... living cells to yield a dark blue ... and even freshly dead cells do not ... is a component of Chemicons MTT assay ...
... of microplate readers combines reagent dispensing with ... affordable, easy-to-use platform for the complete range ... design and adaptability of the Infinite 200 ... a monochromator (M200) or filter (F200) system ...
Rabbit polyclonal to SMARCA2 / BRM - ChIP Grade ( Abpromise for all tested applications). entrezGeneID: 6595 SwissProtID: P51531...
... Glutamate receptors constitute the principal ... Two classes of glutamate receptors ... receptors. Ionotropic glutamate receptors are ... (GluR1-7, NMDA1-3, KAI-2) which comprise ...
Biology Products: