Navigation Links
Pristine rainforests are 'biogeochemical reactors'
Date:9/16/2010

A multinational team that includes a North Carolina State University researcher has found another piece of the atmospheric puzzle surrounding the effects of aerosol particles on climate change. Their findings will contribute to our ability to more accurately measure human impact on climate, and to determine how much pollution may "mask" the actual rate of climate change.

Dr. Markus Petters, an NC State assistant professor of marine, earth and atmospheric sciences, traveled to the Amazon rainforest in a remote area of Brazil as part of a team that wanted to study how a rainforest behaved in the absence of any anthropogenic, or human, influence. They were particularly interested in the behavior of atmospheric aerosol particles, which play an important role in our climate system due to their ability to modify cloud formation and encourage or suppress precipitation.

Aerosol particles act as seeds for cloud formation and water condensation inside clouds. Some of these particles about one in a million form ice crystals inside the clouds, which initiate rainfall. In areas populated by humans, pollution serves as an additional source for these particles. In a pristine area such as the Amazon, where pollution is not a factor, the researchers found that the rainforest itself acted as a biogeochemical reactor, producing "fuel" for the rainclouds from organic molecules emitted by trees, as well as other biological matter such as plant debris, bacteria and pollen.

"The trees basically 'sweat out' organic molecules that react with compounds in the atmosphere, producing tiny particles that are around 20 to 200 nanometers in size," Petters says. "These particles seed the clouds. In addition, other biological particles form the ice nuclei for the clouds."

The researchers published their findings in the Sept. 17 issue of Science.

"We have to look at areas without anthropogenic influences and see what the aerosol budget is like without humans being involved," Petters says. "The Amazon is unique in that it provides a good place for us to observe atmospheric interactions without human influence, and to catalog baseline activity for the rainforest. If we understand that baseline well enough around the world, we can run simulations that show how human aerosol emissions modulate climate change."


'/>"/>

Contact: Tracey Peake
tracey_peake@ncsu.edu
919-515-6142
North Carolina State University
Source:Eurekalert

Related biology news :

1. Millenium atoll: A pristine ecosystem
2. Plant fossils give first real picture of earliest Neotropical rainforests
3. New collaborative center to provide education, research on temperate rainforests
4. Princeton-led team finds secret ingredient for the health of tropical rainforests
5. New aid to biogeochemical research slated for materials characterization lab
6. Clean sampling from bioreactors
7. ExcellGene and Khner achieved milestone in development of novel 250 Liter mammalian cell culture bioreactors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/9/2016)... , UAE, May 9, 2016 ... when it comes to expanding freedom for high net ... Even in today,s globally connected world, there is ... conferencing system could ever duplicate sealing your deal with ... obtaining second passports by taking advantage of citizenship via ...
(Date:4/26/2016)... BANGALORE, India and LONDON ... Infosys Finacle, part of EdgeVerve Systems, a ... ), and Onegini today announced a partnership to ... banking solutions.      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ... banks to provide their customers enhanced security to ...
(Date:4/15/2016)... April 15, 2016 Research ... Gait Biometrics Market 2016-2020,"  report to their offering.  ... ) , ,The global gait biometrics market is ... during the period 2016-2020. Gait analysis ... can be used to compute factors that are ...
Breaking Biology News(10 mins):
(Date:5/27/2016)... ... May 27, 2016 , ... Doctors in Italy, Japan, the UK and the ... associated protein (BAP1) gene and its link to malignant mesothelioma. Surviving Mesothelioma has just ... the full article now. , The studies analyzed for the new report included ...
(Date:5/27/2016)... , May 27, 2016 At present, ... playing in this space know that volatility is what makes ... companies on ActiveWallSt.com: Synta Pharmaceuticals Corp. (NASDAQ: SNTA ... Inc. (NASDAQ: LPTN ), and Heat Biologics Inc. ... access to the technical alerts for these stocks at: ...
(Date:5/26/2016)... Jersey and READING, England ... Indegene ( http://www.indegene.com ), a leading global ... life science, pharmaceutical and healthcare organisations and TranScrip ... innovative scientific support throughout the product lifecycle, today ... the launch of IntraScience.      (Logo: ...
(Date:5/26/2016)... , May 26, 2016 Despite the ... value in this space. Today,s pre-market research on ActiveWallSt.com directs ... Health Inc. (NASDAQ: RDUS ), Cerus Corp. (NASDAQ: ... ARWR ), and Five Prime Therapeutics Inc. (NASDAQ: ... briefings at: http://www.activewallst.com/ On ...
Breaking Biology Technology: