Navigation Links
Black carbon a significant factor in melting of Himalayan glaciers
Date:2/3/2010

The fact that glaciers in the Himalayan mountains are thinning is not disputed. However, few researchers have attempted to rigorously examine and quantify the causes. Lawrence Berkeley National Laboratory scientist Surabi Menon set out to isolate the impacts of the most commonly blamed culpritgreenhouse gases, such as carbon dioxidefrom other particles in the air that may be causing the melting. Menon and her collaborators found that airborne black carbon aerosols, or soot, from India is a major contributor to the decline in snow and ice cover on the glaciers.

"Our simulations showed greenhouse gases alone are not nearly enough to be responsible for the snow melt," says Menon, a physicist and staff scientist in Berkeley Lab's Environmental Energy Technologies Division. "Most of the change in snow and ice coverabout 90 percentis from aerosols. Black carbon alone contributes at least 30 percent of this sum."

Menon and her collaborators used two sets of aerosol inventories by Indian researchers to run their simulations; their results were published online in the journal Atmospheric Chemistry and Physics.

The actual contribution of black carbon, emitted largely as a result of burning fossil fuels and biomass, may be even higher than 30 percent because the inventories report less black carbon than what has been measured by observations at several stations in India. (However, these observations are too incomplete to be used in climate models.) "We may be underestimating the amount of black carbon by as much as a factor of four," she says.

The findings are significant because they point to a simple way to make a swift impact on the snow melt. "Carbon dioxide stays in the atmosphere for 100 years, but black carbon doesn't stay in the atmosphere for more than a few weeks, so the effects of controlling black carbon are much faster," Menon says. "If you control black carbon now, you're going to see an immedi
'/>"/>

Contact: Julie Chao
JHChao@lbl.gov
510-486-6491
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New management methods extend blackberry season
2. Beyond sunlight: Explorers census 17,650 ocean species between edge of darkness and black abyss
3. Skunks strategy not just black and white
4. Black rat does not bother Mediterranean seabirds
5. System that regulates blood pressure is amiss in some healthy, young blacks
6. Antioxidants in Midwestern black raspberries influenced by production site
7. Scientists find black gold amidst overlooked data
8. New blackberry introduced
9. Biologists solve mystery of black wolves
10. Chemopreventive agents in black raspberries identified
11. Study: urban black bears live fast, die young
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Black carbon a significant factor in melting of Himalayan glaciers
(Date:8/27/2014)... listen carefully to someone, the first thing we do ... stop moving altogether. This strategy helps us hear better ... , This interplay between movement and hearing also has ... has long suggested that the brain,s motor cortex, which ... rise to our conscious perception of sound. , A ...
(Date:8/27/2014)... beasts. But every creature is a baby once. , ... of 24 very young dinosaurs and one older individual ... a caretaker, according to a new study by University ... Peter Dodson led the work, collaborating with researchers from ... is held. Hedrick is a doctoral student in the ...
(Date:8/27/2014)... evidence puts into doubt the long-standing belief that a ... brain plays a central role in depression. In ... that mice lacking the ability to make serotonin in ... conventional wisdom) did not show depression-like symptoms. , ... VA Medical Center and Wayne State University School of ...
Breaking Biology News(10 mins):Stop and listen: Study shows how movement affects hearing 2Stop and listen: Study shows how movement affects hearing 3Penn paleontologists describe a possible dinosaur nest and young 'babysitter' 2Penn paleontologists describe a possible dinosaur nest and young 'babysitter' 3New study throws into question long-held belief about depression 2
... States are markedly underestimating the changes needed to mitigate ... change because they work in ,silos, according to pioneering ... Manchester, discovered that the lack of communication between government ... differences over who is responsible for what. He ...
... fibrillation is a cardiac arrhythmia a chronic irregularity ... people in Germany. Although the condition is not acutely ... serious illnesses, such as cardiac insufficiency, stroke and dementia. ... studies, an international team of researchers, led by LMU ...
... as the "world,s aquarium," the marine ecosystems of the ... methods are depleting the sea,s habitats, creating areas that ... story "Threatened Gulf" . But, as Octavio ... Diego will describe during a presentation at the 2010 ...
Cached Biology News:Governments 'misjudging' scale of CO2 emissions 2When the heart gets out of step 2When the heart gets out of step 3Damage to threatened Gulf of California habitats can be reversed 2
(Date:8/28/2014)... August 28, 2014 Supplementing their ... a promotion for Eppendorf Safe Lock Centrifuge ... purchase the highest quality tubes at an affordable ... for customers doing chemical, medical, pharmaceutical, and life ... are not regularly able to afford Eppendorf products. ...
(Date:8/27/2014)... -- Rhythm, a biopharmaceutical company developing peptide therapeutics that ... metabolic disorders, announced today that it has filed a ... and Exchange Commission (SEC) relating to the proposed initial ... number of shares to be offered and the price ... Citigroup and Cowen and Company will act ...
(Date:8/27/2014)... is how plants survive impact by the huge ... while using this energy for photosynthesis. The hypothesis ... blades quickly dissipate the energy throughout the entire ... DTU Physics have now managed to successfully ,film, ... contain light-absorbing proteins which play a role in ...
(Date:8/27/2014)... 2014  Lisa Kulik saw fireworks for the first ... thanks to a groundbreaking retinal implant co-invented by ... at the University of Southern California (USC) Eye Institute. ... Ariz. resident who has retinitis pigmentosa, a ... On June 2, she became the first person west ...
Breaking Biology Technology:Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 3Rhythm Files Registration Statement for Proposed Initial Public Offering 2DTU researchers film protein quake for the first time 2USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 2USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 3USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 4USC Eye Institute ophthalmologists implant first FDA-approved Argus II retinal prosthesis in western United States 5
... 7 Abbott (NYSE: ABT ),will present ... on Tuesday, March 18, 2008. Thomas C. Freyman, ... make a formal,presentation on the company at 8:30 ... of the presentation will be accessible through,Abbott,s Investor ...
... On Thursday, March 13, 2008,at 8:30 a.m. ... Therapeutics, Inc.,s (CTI) (Nasdaq: CTIC ; MTAX) ... discuss the company,s 2007 fourth,quarter achievements and year-end ... Thursday, March 13 8:30 a.m. Eastern/1:30 p.m. ...
... team of researchers from the departments of macromolecular science ... of Engineering and the Louis Stokes Cleveland Department of ... a new type of polymer that displays chemoresponsive mechanic ... to soft plastic and vice versa in seconds when ...
Cached Biology Technology:Researchers engineer new polymers to change their stiffness and strength when exposed to liquids 2Researchers engineer new polymers to change their stiffness and strength when exposed to liquids 3
...
...
... Solid phase reagent ... purification; Easy & unique ... Compatible with detergents and ... & recover non-envelop viruses ...
Synaptic Vesicle I Sampler Kit 10g each...
Biology Products: