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:10/13/2017)... ... October 13, 2017 , ... The International Association of Eating ... excellence for the field of eating disorders, announces the opening of early registration ... Orlando, Florida at the Omni Resort at ChampionsGate. , The annual ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... alumni Hannah Randall, PharmD ‘17, and Jennifer Huggins, PharmD ’17, along with ... for the primary prevention of cardiovascular diseases during the 15th Annual Women’s ...
(Date:10/13/2017)... ... October 13, 2017 , ... Apple Rehab Shelton Lakes , which ... evacuation of the facility as part of a disaster drill on October 3rd. , ... and Shelton City Emergency Manager, as well as the Connecticut Long Term Care ...
(Date:10/13/2017)... ... 13, 2017 , ... The Visiting Nurse Association (VNA) of Somerset Hills is ... vendors and unique items from across the nation, this holiday-themed event will raise funds ... by the VNA. The boutique will be open Saturday, November 4 (10:00 a.m. ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Global Healthcare ... scenic Alexandria Park in Milford, NJ. This free event, sponsored by Global Healthcare ... activity. The fun run is geared towards children of all ages; it is ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... -- According to the Centers for Disease Control and Prevention (CDC), influenza ... Care is helping communities across Massachusetts , ... no-cost* flu shots through the end of the month. *Some ... ... flu shot is by the end of October, according to the Centers ...
(Date:10/2/2017)... 2017  Eli Lilly and Company (NYSE: ... third quarter of 2017 on Tuesday, October 24, 2017. ... day with the investment community and media to further ... call will begin at 9 a.m. Eastern time. Investors, ... webcast of the conference call through a link that ...
(Date:10/2/2017)... Denmark , Oct. 2, 2017 The Rebound ... in the struggle to reverse the tide of prescription drug ... for regulating their medicine intake and stepping down their dosage ... set to launch in December 2017; the first 100,000 people ... Learn more at http://www.rebound-solution.com/ ...
Breaking Medicine Technology: