Navigation Links
Airborne Germs May Spur Rain, Snow, Hail
Date:5/24/2011

TUESDAY, May 24 (HealthDay News) -- Rain-making bacteria may shed some light on the role that biological particles play in the Earth's precipitation cycle, new research shows.

The study, slated for presentation Tuesday at the general meeting of the American Society for Microbiology in New Orleans, revealed high concentrations of bacteria within the center of hailstones, suggesting that airborne microorganisms may trigger precipitation, such as rain, snow and hailstorms.

"In order for precipitation to occur, a nucleating particle must be present to allow for aggregation of water molecules," Alexander Michaud of Montana State University in Bozeman, said in a society news release. "There is growing evidence that these nuclei can be bacteria or other biological particles."

After analyzing four layers of large hailstones collected in June 2010, the highest concentration of bacteria was found in the inner cores -- also known as the embryo, the study authors noted.

"Bacteria have been found within the embryo, the first part of a hailstone to develop. The embryo is a snapshot of what was involved with the event that initiated growth of the hailstone," Michaud explained in the news release.

Snow and other types of precipitation are dependent on the presence of ice nuclei, or particles that ice crystals can grow around. Biological particles, such as the well-studied plant pathogen Pseudomonas syringae, are among the most active, naturally occurring ice nuclei.

"Ice nucleating strains of P. syringae possess a gene that encodes a protein in their outer membrane that binds water molecules in an ordered arrangement, providing a very efficient nucleating template that enhances ice crystal formation," according to Brent Christner, of Louisiana State University, who is also presenting at the meeting.

The researchers concluded that high concentrations of biological ice nuclei may influence a number of factors related to the Earth's hydrological cycle, including: the size and concentration of ice crystals in clouds, horizontal cloud coverage in the free troposphere, precipitation levels at the ground, and insulation of the Earth from solar radiation.

Because this study was presented at a meeting, the findings should be viewed as preliminary until they are published in a peer-reviewed journal.

More information

The U.S. National Weather Service has detailed information on the Earth's hydrologic cycle.

-- Mary Elizabeth Dallas

SOURCE: American Society for Microbiology, news release, May 24, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Hong Kong hospital reports possible airborne influenza transmission
2. Potentially Lethal Airborne Fungus May Spread to California
3. Musical Instruments a Breeding Ground for Germs: Study
4. Germs Thrive on Horns Passed Around in School Bands: Study
5. Predatory Bacteria May Help Control Antibiotic-Resistant Germs
6. Anesthesiologists Spreading Germs During Surgery: Study
7. Spread Cheer, Not Germs, at Holiday Gatherings
8. Germs in Soil Might Give Learning a Boost
9. 'Animals' Keep Germs Away From Kids' Toothbrushes
10. Scripps Research study points to liver, not brain, as origin of Alzheimers plaques
11. Cell Phones Affect Areas of the Brain, Study Shows
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Airborne Germs May Spur Rain, Snow, Hail
(Date:1/18/2017)... ... 2017 , ... From a health perspective, 2017 will clearly be the Year ... chronic disease, mental health and general physical well-being. The New York Times suggested a ... , For one Charlottesville restaurant, good gut health is clearly on the menu. ...
(Date:1/18/2017)... ... January 18, 2017 , ... The V Foundation for Cancer ... its official endurance training and fundraising team, to compete in the Boston Marathon on ... inspired to finish the world’s oldest annual marathon to join Team V and support ...
(Date:1/18/2017)... ... January 18, 2017 , ... At Hallmark Nameplate, their ... that they have achieved certification to ISO 13485. This certification is another way they ... to date products and services that they need. , The ISO 13485 Certification is ...
(Date:1/18/2017)... ... January 18, 2017 , ... Rollerblade®, ... Brake Technology (ABT), an innovative braking system that allows skaters of all levels ... one of the biggest concerns of beginner and intermediate skaters – learning how ...
(Date:1/17/2017)... ... January 17, 2017 , ... Gym Source, America’s leading ... new showroom at South Dixie Hwy in Miami, FL. , “We are elated to ... “The new innovative in-store concept is designed to give clients a seamless and motivating ...
Breaking Medicine News(10 mins):
(Date:1/18/2017)... NEW YORK , January 18, 2017 ... perception of people regarding the use of cannabis both for ... not only are more Americans open to the use of ... and financial sectors. According to Arcview Market Research, the North ... 2016, up 30% from the previous year. The research projects ...
(Date:1/18/2017)... and Drug Administration CSL CureVac Daiichi ... Drug Administration FORT Fresenius Pharmaceuticals Gamma ... GlaxoWellcome Global Influenza Programme Grippol ... Targeting Systems Indian Association of Paediatrics Janssen Pharmaceuticals ... Krka Pharmaceuticals Medicago Medicare ...
(Date:1/17/2017)... Jan. 17, 2017 Secretary of Health Dr. ... Secretary Gary Tennis are warning Pennsylvanians of ... recent overdose deaths from the drug in ... intended to sedate large animals and is not meant ... comes into contact with it," Secretary Murphy said. "It,s ...
Breaking Medicine Technology: