Navigation Links
Tiny airborne particles are a major cause of climate change

A scientist at the Weizmann Institute of Science and his colleagues caused a storm in the atmospheric community when they suggested a few years back that tiny airborne particles, known as aerosols, may be one of the main culprits causing climate change ?having, on a local scale, an even greater impact than the greenhouse gases effect. Attempts to understand how these particles influence clouds have generated many uncertainties. A new paper by Dr. Ilan Koren of the Weizmann Institute Environmental Studies and Energy Research Department and Dr. Yoram Kauffman of the NASA/Goddard Space Flight Center, USA,* published in Science Express online, weaves together two opposing effects of atmospheric aerosols to provide a comprehensive picture of how they may be affecting our climate.

Cloud formation is dependent upon the presence of small amounts of aerosols such as sea salt and desert dust. These tiny particles serve as the seeds around which water vapor in the air condenses, forming tiny water droplets that rise as they release heat. As the small droplets rise, they collide and merge with larger droplets. When the droplets reach a critical size, gravity takes over, causing them to fall from the cloud in the form of rain.

One of the controversies surrounding the extent of aerosol impact on climate change is the duality of their influence. On the one hand, Koren and his colleagues previously found evidence to suggest that the extra seeds planted in the atmosphere by the emission of man-made aerosols (pollution, forest fires, and fuel combustion) lead to more, but smaller-sized, water droplets. The formation of larger water droplets by the collision process is less efficient and, therefore, rainfall is suppressed. The smaller droplets are lifted higher up into the atmosphere, creating larger and taller clouds that will persist longer. Not only does this alter the whole water cycle, but the increased cloud cover reflects more of the sun's radiation back into
'"/>

Source:American Committee for the Weizmann Institute of Science


Page: 1 2 3

Related biology news :

1. New studies suggest airborne SARS transmission is possible
2. Opening windows may be the best way of preventing transmission of airborne infection
3. DNA Molecules Used To Assemble Nanoparticles
4. Tiny particles could solve billion-dollar problem
5. Imaging Lymph Nodes with Nanoparticles
6. Probing The Promise And Perils Of Nanoparticles
7. Probing the promise and perils of nanoparticles
8. Nanoparticles offer new hope for detection and treatment
9. Novel gene-silencing nanoparticles shown to inhibit Ewings sarcoma
10. Basis for DNA ejection from single phage particles
11. Using nanoparticles, in vivo gene therapy activates brain stem cells
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Tiny airborne particles are major cause climate change

(Date:8/22/2014)... , August 22, 2014 ... ) has announced the addition of ... 2014-2018"  report to their offering.  ... ,Biometrics is a technology that helps ... on their physical or behavioral features. ...
(Date:8/22/2014)... RIVERSIDE, Calif. Thomson Reuters , a leading ... five researchers at the University of California, Riverside in ... brightest minds of our times." , To generate the ... (2002-2012) to identify researchers whose published work has had ... included among some 3,200 individuals who published the greatest ...
(Date:8/22/2014)... the 29th Annual International Papillomavirus Conference shows that ... combats three types of human papillomavirus, including the ... cancer. , When tested in several cultured human ... HPV-18 and HPV-11 cells, according to Louise T. ... the findings at the Seattle conference. The National ...
Breaking Biology News(10 mins):Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 2Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 35 UC Riverside scientists among world's most influential scientific minds 2
... Inc. (Nasdaq: AWRE ), a leading supplier of ... to discuss the company,s operating results for the fourth quarter ... 5:00 p.m. Eastern Time. CEO Michael Tzannes and CFO Rick ... webcast by Thomson and can be accessed on the Investor ...
... the potentially fatal hepatitis C virus has banked its ... inability to infect animals other than humans and chimpanzees ... animal model for the disease. But now, in a ... online issue of Nature , Rockefeller University scientists ...
... . , Lack of sleep is a ... the day poses a very real and dangerous problem. ... at McGill University demonstrates interestingly, that sleep-wake states are ... melanin-concentrating hormone (MCH) neurons and orexin (Orx) neurons, which ...
Cached Biology News:Aware Announces Q4 and FY2008 Earnings Conference Call 2Discovery could lead to a new animal model for hepatitis C 2What happens when we sleep 2
(Date:8/22/2014)... how facets form and develop on platinum nanocubes ... nanocrystal design and reveal that a nearly 150 ... at the nanoscale. , Researchers with the U.S. ... (Berkeley Lab) used highly sophisticated transmission electron microscopes ... the physical mechanisms that control the evolution ...
(Date:8/22/2014)... 22, 2014 Ophthalmic drug delivery ... and challenging endeavors as the anatomy, physiology and ... to the foreign substances. Ocular drug delivery technologies ... medication and minimal use of needles; also it ... and provides specific targeting within the ocular globe. ...
(Date:8/22/2014)... 22, 2014 Research and Markets ... China Gel Permeation Chromatography (GPC) Industry Report 2014" ... and China Gel Permeation Chromatography (GPC) Industry Report is ... of the global gel permeation chromatography industry with a ... a basic overview of the industry including definitions, classifications, ...
(Date:8/22/2014)... August 22, 2014 The AMA is ... its members in Alaska that Alaska Governor Sean Parnell ... 15, further defining public use of Unmanned Aircraft Systems ... Force. House Bill 255states that it is, “An Act ... captured by an unmanned aircraft system.” It defines State ...
Breaking Biology Technology:Shaping the future of nanocrystals 2Shaping the future of nanocrystals 3Shaping the future of nanocrystals 4Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 2Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 3Ocular Drug Delivery Technologies Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2014 - 2020 4Global and China Gel Permeation Chromatography (GPC) Industry Report 2014 2State of Alaska Signs Unmanned Aircraft Systems Bill 2
... Sept. 6, 2011 The Immune Deficiency Foundation (IDF) ... continuing education (CE) course for  nurses. The goal of ... nurses by providing an educational update on primary immunodeficiency ... is the national patient organization dedicated to improving the ...
... 6, 2011 Auxilium Pharmaceuticals, Inc. (NASDAQ: ... safety update following 17 months of post-approval use in ... Dupuytren,s contracture patients with a palpable cord.  After approximately ... U.S., there was no clinically meaningful change in the ...
... Genprex, Inc., formerly known as Convergen LifeSciences, Inc., announced today ... will be branded as Oncoprex™ .   ... oncology sector in recognition of our advancing development programs.  We ... to unlock the unrealized potential of a growing list of ...
Cached Biology Technology:Immune Deficiency Foundation Launches Free Accredited Course for Nurses About Primary Immunodeficiency and Immunoglobulin Therapy 2Immune Deficiency Foundation Launches Free Accredited Course for Nurses About Primary Immunodeficiency and Immunoglobulin Therapy 3Auxilium Pharmaceuticals, Inc. Announces 17 Month XIAFLEX® Safety Update 2Auxilium Pharmaceuticals, Inc. Announces 17 Month XIAFLEX® Safety Update 3Auxilium Pharmaceuticals, Inc. Announces 17 Month XIAFLEX® Safety Update 4Genprex Announces New Branding 2
... Designed specifically for high efficiency ... Low toxicity reagent proven to ... range of cell types. Results ... 95% of target gene expression. ...
... measurements in an easy-to-use benchtop package. ... spectrometer (ESI-oa-TOF) concentrates the performance of ... which fits on your bench. The ... 10,000 FWHM and mass accuracy of ...
... The lower cost and reduced ... system make reference standard DNA analysis ... be used with any of SEQUENOM's ... High-Performance Genotyping (iPLEXTM Gold) , Gene ...
... jetSI-ENDO-FluoR is a tetramethylrhodamine-conjugated jetSI-ENDO ... at 580 nm), the powerful ... are used to determine the ... intracellular delivery and trafficking of ...
Biology Products: