Navigation Links
New research results change the understanding of atmospheric aerosol properties and climate effects
Date:10/14/2010

Atmospheric fine particles affect the Earth's radiation balance by interacting with solar radiation and by participating in cloud formation. Biogenic volatile organic compounds are key players in new particle formation processes. Hence, terrestrial vegetation has an important role as the newly formed particles cool our climate. The chemical composition of such secondary organic aerosol (SOA) particles formed from volatile compounds emitted by vegetation is very complicated and only limited information on the phase state of SOA particles has been available. Thus the scientific community has tried to understand the chemical composition and physical characteristics of SOA particles in order to better understand their climatic implications and also to enable more accurate predictions using global climate models.

Until now, biogenic SOA particles have been represented as liquid droplets in global climate models. But according to the new research published in Nature, the physical state of SOA particles formed in coniferous forest is solid, most likely glassy soon after their formation.

-One can figure these aerosol particles as tiny children's glass marbles, says Professor Thomas Koop from Bielefeld University, Germany.

The experimental research has been conducted by the group of scientists from Finnish and German universities and institutes (Tampere University of Technology, University of Eastern Finland, Finnish meteorological institute, University of Helsinki, Bielefeld University, and Max Planck Institute for Chemistry). The discovery was made in University of Eastern Finland's experimental laboratory designed by Dr Jorma Joutsensaari.

In the experiments, fine particles formed from volatile compounds emitted by scots pines were studied under controlled conditions, and additional measurements were carried out in a coniferous forest in Hyytil, Finland.

The research results were achieved using a new method developed at Tampere University of Technology by Dr Annele Virtanen.

-The method is based on collecting particles by impaction on metal substrates. If the particles are solid, they bounce off the surface whereas liquid particles do not bounce but adhere to the substrate, says Virtanen.

The results will re-direct the atmospheric fine particle research

The new findings will change many features of the understanding of particle behavior in the atmosphere as the physical state of the particles influences their ability to absorb and release water and other gaseous compounds, as well as their ability to act as cloud or ice nuclei. The solid state affects also the aging and lifetime of the chemical components of air particulate matter by reducing the rates of diffusion and reaction in the particles.

-There have been some discrepancies in previous research results related to SOA particle characteristics, which might be explained by the solid state of the particles. Without doubt our results will re-direct the SOA related research worldwide, comments Professor Ari Laaksonen from Finnish Meteorological Institute.


'/>"/>

Contact: Dr. Annele Virtanen
annele.virtanen@tut.fi
358-401-981-002
Tampere University of Technology
Source:Eurekalert

Related biology news :

1. Wistar Institute researcher receives New Innovator award from NIH
2. NC State researchers get to root of parasite genome
3. White Mountain Research Station to host climate change conference
4. Stevens awarded $1M for advanced biofuels research
5. Researchers find animal with ability to survive climate change
6. Researchers find an essential gene for forming ears of corn
7. Researchers note differences between people and animals on calorie restriction
8. Researcher working on destruction of chemical weapons
9. Researchers study acoustic communication in deep-sea fish
10. Researchers discover that growing up too fast may mean dying young in honey bees
11. The Rett Syndrome Research Trust launches operations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... to expand at a CAGR of 25.76% during the ... is the primary factor for the growth of the ... https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global stem ... technology, application, and geography. The stem cell market of ...
(Date:3/30/2017)... 30, 2017  On April 6-7, 2017, Sequencing.com will ... hackathon at Microsoft,s headquarters in ... focus on developing health and wellness apps that provide ... the Genome is the first hackathon for personal ... largest companies in the genomics, tech and health industries ...
(Date:3/29/2017)... 2017  higi, the health IT company that operates ... America , today announced a Series B investment ... EveryMove. The new investment and acquisition accelerates higi,s strategy ... transform population health activities through the collection and workflow ... higi collects and secures data today on behalf of ...
Breaking Biology News(10 mins):
(Date:4/19/2017)... Indiana (PRWEB) , ... April 18, 2017 , ... Alisa ... 2017 Distinguished Alumni Awards from the Purdue College of Pharmacy in Lafayette, Indiana. ... Purdue Pharmacy Program for achievements in their careers and other scientific endeavors. , ...
(Date:4/19/2017)... ... 19, 2017 , ... WHO: Peggy Lillis Foundation, the preeminent ... advocacy. Founded in 2010 in memory of a single-parent mom and kindergarten teacher ... the most-consulted source for patient-focused information on C. diff infections in the nation. ...
(Date:4/19/2017)... WESTMINSTER, Colo. , April 19, ... industry-leading specialty finance firm that provides senior debt ... announced the closing of a $20 million senior ... privately-held orthobiologics company engaged in the development and ... treatment of orthopedic injuries. Cerapedics, lead ...
(Date:4/18/2017)... Jordan, Utah (PRWEB) , ... April 18, 2017 ... ... and collaboration company, has been awarded Channel Partners 2017 Next-Gen Solution Provider. , ... create business value for customers with their vision, innovation, and advocacy of the ...
Breaking Biology Technology: