Navigation Links
AGU journal highlights -- Aug. 6, 2009
Date:8/6/2009

hemistry but predominantly by temperature variations.

Title: Tomographic filtering of high-resolution mantle circulation models: Can seismic heterogeneity be explained by temperature alone?

Authors: B. S. A. Schuberth and H.-P. Bunge: Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universitt Mnchen, Munich, Germany;

J. Ritsema: Department of Geological Science, University of Michigan, Ann Arbor, Michigan, USA.

Source: Geochemistry, Geophysics, Geosystems (G3) paper 10.1029/2009GC002401, 2009; http://dx.doi.org/10.1029/2009GC002401


9. New model shows how short-lived chemicals get to the stratosphere

The exchange of chemicals between the troposphere and the stratosphere can influence ozone production and longevity. For example, bromine compounds can turn into active forms that can efficiently deplete ozone if they are transported from the troposphere to the stratosphere through what is known as the tropical tropopause layer (TTL). To better understand how compounds are transported through the TTL, Gettelman et al. develop a model that simulates the effect of chemical reactions important to several short-lived compounds that pass through this region. Their model is one-dimensional, allowing complex processes to be reduced to a few simple relationships. The authors find that compounds that pass through the TTL with chemical lifetimes of 25 days or longer will have significant concentrations in the stratosphere and will be governed by vertical advection. By contrast, convection cycles govern the distribution of compounds with lifetimes of less than 25 days. This fundamental difference will help scientists understand the mechanics of how stratospheric ozone becomes depleted through interactions with these short-lived compounds.

Title: Process regulating short-lived species in the tropical tropopause layer'/>"/>

Contact: Maria-Jose Vinas
mjvinas@agu.org
202-777-7530
American Geophysical Union
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13

Related biology news :

1. News tips from the Journal of Neuroscience
2. Tips from the Journals of the American Society for Microbiology
3. Story ideas from the Journal of Lipid Research
4. Highlights from the September 2007 Journal of the American Dietetic Association
5. AGU journal highlights -- Sept. 6, 2007
6. Springer will publish Journal of Coastal Conservation
7. ESA celebrates 100 years of insect science journals
8. Springer and the New York Botanical Garden Press join forces to publish botanical journals
9. 200 journals join in theme issues on poverty and human development
10. New ETH Zurich article published in scientific journal Nature
11. Media highlights in the November issues of Biophysical Journal
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/25/2014)... 2014 Research and Markets  has announced ... 2014-2018" report to their offering. ... on the basis of their physical or behavioral patterns. ... traits such as fingerprints, face recognition, DNA, palm print, ... as keystroke patterns and speech pattern/voice recognition. ...
(Date:10/22/2014)... The Nano-Bio Manufacturing Consortium (NBMC), an industry-academia ... (AFRL), has chosen a project proposed by the Arizona ... Arizona College of Medicine – Tucson ... is to assess different sweat collection methods and devices ... under a variety of human-body conditions, the results of ...
(Date:10/22/2014)... 21, 2014 Aware, Inc. (NASDAQ: AWRE ... reported financial results for its third quarter ended September 30, ... was $6.0 million, an increase of 40% compared to $4.3 ... the third quarter of 2014 was $4.1 million compared to ... income in the current three month period was primarily due ...
Breaking Biology News(10 mins):Biometrics Market in Europe 2014-2018: Key Vendors are 3M Cogent, Cognitec, NEC and Safran 2Biometrics Market in Europe 2014-2018: Key Vendors are 3M Cogent, Cognitec, NEC and Safran 3Nano-Bio Manufacturing Consortium Selects Project Proposed by Arizona Center for Integrative Medicine to Optimize Human Performance Monitoring Techniques 2Nano-Bio Manufacturing Consortium Selects Project Proposed by Arizona Center for Integrative Medicine to Optimize Human Performance Monitoring Techniques 3Aware, Inc. Reports Third Quarter 2014 Financial Results 2Aware, Inc. Reports Third Quarter 2014 Financial Results 3Aware, Inc. Reports Third Quarter 2014 Financial Results 4Aware, Inc. Reports Third Quarter 2014 Financial Results 5Aware, Inc. Reports Third Quarter 2014 Financial Results 6Aware, Inc. Reports Third Quarter 2014 Financial Results 7
... hold great promise for benefiting degenerative diseases, and do ... grown in a manner compatible with clinical use (i.e., ... for immunosuppression. These were a few of a number ... by Evan Y. Snyder, M.D., Ph.D., and spearheaded by ...
... from another may depend on the number of receptors ... of receptors is controlled by levels of a ubiquitous ... found. , Everything from the ability to concentrate, perceive ... sclerosis, muscular dystrophy, post-traumatic stress syndrome and schizophrenia is ...
... launch of the first large-scale study to evaluate a ... today by study collaborators in the United States and ... participants at five sites throughout South Africa and is ... are part of the HIV Vaccine Trials Network (HVTN), ...
Cached Biology News:Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease 2Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease 3Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease 4Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease 5Bisexual fruit flies show new role for neurochemical 2Africa's first large-scale HIV vaccine study launches 2Africa's first large-scale HIV vaccine study launches 3Africa's first large-scale HIV vaccine study launches 4
(Date:10/22/2014)... 2014 Involution Studios , a ... a new infographic, Understanding Ebola . The ... designed, easy to follow informative tool for anyone wanting ... symptoms and prevention. , "As the news has spread ... Ebola outbreak represents not only a healthcare crisis with ...
(Date:10/22/2014)... (PRWEB) October 22, 2014 Grace Century, ... and healthcare projects, announces the addition of Dr. ... to its advisory team. Dr. Siddiqui will provide further ... , A graduate of University College Medical School ... degreed in medicine in 2001. With further certification as ...
(Date:10/22/2014)... --  Synthetic Biologics, Inc. (NYSE MKT: SYN), a ... and diseases, announced today that the U.S. Patent and ... a composition of matter patent application that covers the ... This is Synthetic Biologics, first allowed patent application directly ... the Company,s extensive C. difficile patent estate. ...
(Date:10/22/2014)... -- Research and Markets  has announced the addition ... Application, Geography - Global Analysis and Forecast (2014 - ... Organic electronics, also called as polymer electronics or plastic ... with small conductive molecules and electrically conductive polymers. It ... are carbon based, made using synthetic strategies developed in ...
Breaking Biology Technology:Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3
... May 24, 2010 Simbionix USA Corporation,the world,s leading provider of ... is launching,two new hands-on training systems- the Lap Nepherctomy simulation module and,the ... AUA annual meeting in San Francisco next week. , ... The Lap ...
... BEIJING , May 24 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (Nasdaq: ... Weidong Yin ,Chairman, President & CEO, will present at the 2010 UBS Global ... London,England . Sinovac,s presentation is scheduled for Wednesday, June 2, 2010 ... , , ...
... ... ... plans to add to its natural color capabilities by investing $16 million at its Color ... facility dedicated wholly to natural colors production. The plant will be the largest and most ...
Cached Biology Technology:Simbionix to Reveal Two new Products at the Upcoming American Urology Association (AUA) Annual Meeting 2Simbionix to Reveal Two new Products at the Upcoming American Urology Association (AUA) Annual Meeting 3Sinovac to Present at 2010 UBS Global Specialty Pharmaceuticals Conference 2Sensient Technologies Corporation Announces Major Investment in Natural Colors 2
HybriWell™ hybridization sealing system, 20 mm diameter chamber, 0.15 mm deep *set of 100*...
Recombinant Feline IL-5...
... Checker Kits provide two highly efficient methods ... time-consuming plasmid preparation. By using the large-scale ... need to do is to transfer partial ... the transformation plates into the solutions provided ...
Recombinant Equine IL-4, CF...
Biology Products: