Sentences with phrase «soot deposition»
"Soot deposition" refers to the process of black, powdery particles settling and accumulating on surfaces. It occurs when there is incomplete combustion of fuels such as coal, wood, or oil, and the resulting tiny particles are released into the air. These particles can end up sticking to various objects, leaving behind a layer of black residue called soot deposition. It is commonly seen on chimneys, exhaust pipes, and walls near fireplaces or other sources of combustion. Full definition
In other words, you're already observing a positive feedback effect of global warming by the concentration of prior soot deposition on the surfaces of glaciers reducing their albedo.
dotearth.blogs.nytimes.com
To better understand the role that black soot has on glaciers, researchers trekked high into the Himalayas to collect ice cores that contain a record of soot deposition that spans back to the 1950s.
Charlie Zender has done extensive research on soot deposition in the Arctic, citing up to 90 PERCENT of the boreal thaw as being from dirty snow due to sootfall.
The springtime stratospheric ozone hole & surface ozone also have an impact, and the combination of soot & surface ozone would exceed the impact from greenhouse gases (soot deposition alone is on par with greenhouse gases in the boreal thaw).
At Zuoqiupu glacier — a bellwether site on the southern edge of the plateau and downwind from the Indian subcontinent — black soot deposition increased by 30 percent between 1990 and 2003.
The albedo reduction was the most pronounced for the snow with higher soot content, and it was observed immediately following soot deposition.
Soot deposition causes earlier seasonal melting of mountain snow in ranges as different as the Himalayas of Asia and the Sierra Nevada of California, and it is also believed to be accelerating the melting of Arctic sea ice.
Other warming factors include methane, airborne soot, soot deposition on ice and snow and fluorocarbons (CFC & HFC).