HOME >> BIOLOGY >> NEWS
Large volcanic eruptions affect the 'greener greenhouse'

Last year, scientists discovered that the northern hemisphere was becoming increasingly greener due to increased warming. Furthering that study, researchers have discovered that tremendous amounts of tiny pollutant particles thrust into the atmosphere by large volcanic eruptions slow plant growth, but still enhance the ability of lands to act as a sink for carbon, as reported in the May 31st issue of Science.

Last September, researchers used satellite data and confirmed that plant life has been growing more vigorously since 1981 above 40 degrees north latitude, which represents a line stretching from New York to Madrid to Beijing. They also determined that the growing season has increased by several days, especially in Eurasia. One suspected cause of this "greener greenhouse" they cited was rising temperatures that are possibly linked to the buildup of greenhouse gases in our atmosphere.

"When we looked at the data between 1992 and 1993, the warming period of the last 20 years was interrupted because of the tiny dust particles (aerosols) shot into the atmosphere by the eruption of Mount Pinatubo," said Ranga Myneni, co-author of the study, and professor at Boston University. The increased amount of aerosols cast into the upper atmosphere from the eruption caused more sunlight to be reflected back into space and cooled the Earth.

As a result of the Earth cooling, and sunlight being reduced, plants produced less new foliage, because they use sunlight, carbon dioxide and water to make sugars for growth of new stems, leaves and structures. Myneni said that the computer model he and his colleagues used simulates photosynthesis, and calculates the amount of plant sugars that are produced versus how much carbon is given off.

During the 1980s and 1990s the land was taking in more carbon than it was putting back in the air, including the years immediately following Mt. Pinatubo's eruption. "That is because although the plants produced l
'"/>

Contact: Rob Gutro
Rgutro@pop900.gsfc.nasa.gov
301-286-4044
NASA/Goddard Space Flight Center
6-Jun-2002


Page: 1 2

Related biology news :

1. Largest brain repair initiative in MS will speed strategies to restore nerve function
2. Larger nuts end up further from tree
3. Large-scale climate change linked to simultaneous population fluctuations in arctic mammals
4. Large brains not required? Third and smallest skull of first Eurasians reported in Science
5. Large river once flowed in south Florida
6. Largest fossil cockroach found: Site preserves incredible detail
7. Largest grant ever to Indiana U fuels Genomics Initiative
8. Large air pollution center established at NYU School of Medicine
9. Designer Molecules: Largest Protein Ever Created From Scratch Has Implications For Novel Drug Delivery And Diagnostics
10. The Largest Bacterium: Scientist Discovers New Bacterial Life Form Off The African Coast
11. Research Reveals Environmental Injustice In N.C. Communities With Large Hog Farms

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/3/2016)... May 3, 2016  Neurotechnology, a provider of ... MegaMatcher Automated Biometric Identification System (ABIS) , a ... projects. MegaMatcher ABIS can process multiple complex biometric ... combination of fingerprint, face or iris biometrics. It ... and MegaMatcher Accelerator , which have ...
(Date:4/26/2016)... and LONDON , ... Finacle, part of EdgeVerve Systems, a product subsidiary ... Onegini today announced a partnership to integrate the ...      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) ... provide their customers enhanced security to access and ...
(Date:4/15/2016)... CHICAGO , April 15, 2016  A ... companies make more accurate underwriting decisions in a ... offering timely, competitively priced and high-value life insurance ... health screenings. With Force Diagnostics, rapid ... and lifestyle data readings (blood pressure, weight, pulse, ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 27, 2016  Sequenom, Inc. (NASDAQ: SQNM ... lives through the development of innovative products and services, ... the United States denied its petition to ... of Sequenom,s U.S. Patent No. 6,258,540 (",540 Patent") are ... by the Supreme Court,s Mayo Collaborative Services v. Prometheus ...
(Date:6/27/2016)... , ... June 27, 2016 , ... Parallel 6 ... trials, announced today the Clinical Reach Virtual Patient Encounter CONSULT module which ... with the physician and clinical trial team. , Using the CONSULT module, patients and ...
(Date:6/27/2016)... ... June 27, 2016 , ... Rolf ... join the faculty of the University of North Carolina Kenan-Flagler Business School ... and entrepreneurship at UNC Kenan-Flagler, with a focus on the school’s international efforts, ...
(Date:6/27/2016)... , June 27, 2016   Ginkgo Bioworks , ... industrial engineering, was today awarded as one of ... of the world,s most innovative companies. Ginkgo Bioworks ... for the real world in the nutrition, health ... work directly with customers including Fortune 500 companies ...
Breaking Biology Technology:
Cached News: