Sentences with phrase «natural aerosol particles»
Taking factors such as sea surface temperature, greenhouse gases and natural aerosol particles into consideration, the researchers determined that changes in the concentration of black carbon could be the primary driving force behind the observed alterations to the hydrological cycle in the region.
https://www.scientificamerican.com/ Not exact matches
«Tiny particles have outsize impact on storm clouds, precipitation: Amazon rainforest provides a unique natural lab to study effects of aerosols.»
Such sulfuric acid aerosols are already responsible for the bulk of nacreous clouds that form in the polar stratosphere; added particles would just amp up the natural process (although it might also amp up damage the ozone layer).
Aerosols are both natural and man - made, and include windblown desert dust, sea salt, smoke from fires, sulfurous particles from volcanic eruptions, and particles from fossil fuel combustion.
Albedo modification would work by lacing the atmosphere with tiny particles or aerosols that would reflect sunlight and mimic natural processes.
Two important aerosol species, sulfate and organic particles, have large natural biogenic sources that depend in a highly complex fashion on environmental and ecological parameters and therefore are prone to influence by global change.
By engineering breaking waves of natural ocean water under purified air in the lab, they were able to isolate and analyze aerosols from the spray and determine how life within the water altered the chemistry of the particles.
That's because scientists have presumed that most of the aerosols from minor eruptions do not rise beyond the troposphere, the layer of Earth's atmosphere where weather occurs and where natural processes quickly clear particles from the atmosphere.
The results show for the first time for a number of natural compounds, which together account for around 70 per cent of the biological hydrocarbon emissions, how much each compound produces low - volatility products and how they can possibly affect the climate via producing aerosol particles.
Aerosols are solid or liquid particles suspended in the atmosphere, consisting of (in rough order of abundance): sea salt, mineral dust, inorganic salts such as ammonium sulfate (which has natural as well as anthropogenic sources from e.g. coal burning), and carbonaceous aerosol such as soot, plant emissions, and incompletely combusted fossil fuel.
Additional aerosol mass composed of organosulfate and organonitrate chemicals can then form via nitrogen oxide - initiated oxidation of VOCs from natural vegetation (e.g., isoprene) in the presence of highly acidic ultrafine particles.
Possible reasons revolve around tiny natural and manmade particles called aerosols that serve as seeds for cloud droplets to form around.
A team of scientists led by Pacific Northwest National Laboratory atmospheric researcher Dr. Susannah Burrows and collaborator Daniel McCoy, who studies clouds and climate at the University of Washington, reveal how tiny natural particles given off by marine organisms — airborne droplets and solid particles called aerosols — nearly double cloud droplet numbers in the summer, which boosts the amount of sunlight reflected back to space.
In effect, these particles — whether aerosols or kitchen table salt — could act like natural aerosols that cool the planet after a volcanic eruption.
The index of refraction and an average size of the aerosol particles formed are close to those characteristic of the natural stratospheric aerosol.
Real Climate defines «aerosols» as ``... solid or liquid particles suspended in the atmosphere, consisting of (in rough order of abundance): sea salt, mineral dust, inorganic salts such as ammonium sulfate (which has natural as well as anthropogenic sources from e.g. coal burning), and carbonaceous aerosol such as soot, plant emissions, and incompletely combusted fossil fuel.»
Turner's work, in particular, which often depicts brightly colored sunsets and emphasized natural light, can be used to roughly estimate aerosol optical depth — that is, the amount of particles like dust, volcanic ash, smoke and sea salts in the atmosphere — at the time the painting was made.
I'll admit that dimethysulphide and iodocompounds are poor reaches for straws, I don't know who dreamed that up, more emphasis should be made on natural mineral, sea - salt, and gas - to - particle aerosols)-- Very poor oversimplified cloud modeling (equating all clouds to a single W / m2 forcing parameter)-- Accuracy of model predictions (they present a juicy graph of a 1988 model and observed temps.
Partly by taking an exacting approach to atmospheric aerosols, which are natural and human - generated particles that play a role in the distribution of solar energy.
Topics that I work on or plan to work in the future include studies of: + missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in - cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen + missing aerosol parameterizations, such as the effect of aerosol mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in - canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability + the change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas - phase chemistry via photolysis rates changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas - phase species like ozone + the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols + aerosol - cloud interactions, which include cloud activation, the aerosol indirect effect and the impact of clouds on aerosol removal + changes on climate and feedbacks related with all these topics In order to understand the climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol changes in the atmosphere on the terrestrial biosphere, the ocean and climate.