Sentences with phrase «aerosol formation from»
Secondary aerosol formation from atmospheric reactions of aliphatic amines.
http://www.nature.com/
A semi-analytical method for calculating rates of new sulfate aerosol formation from the gas phase.
Effect of pellet boiler exhaust on secondary organic aerosol formation from α - pinene.
Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States
Not exact matches
The results imply that the interaction between organic and sulfuric acids promotes efficient formation of organic and sulfate aerosols in the polluted atmosphere because of emissions from burning of fossil fuels, which strongly affect human health and global climate.
At least over the oceans, the pre-industrial cloud conditions would have been considerably different from those of today; this implies that the aerosols we have been adding to the atmosphere may have had a significant effect on global patterns of cloud formation and rain.
A study published April 7 in PNAS Online Early Edition describes how a team of scientists, including researchers from the University of California, Davis, showed that vapor losses to the walls of laboratory chambers can suppress the formation of secondary organic aerosol, which in turn has contributed to the underprediction of SOA in climate and air quality models.
Even though open windows bring in more ozone from outside, the reduction in the indoor limonene concentration and SOA formation strength more than make up for it, as less secondary organic aerosol is formed inside.
«Huge amounts of aerosols from Asia go as high as six miles up in the atmosphere and these have an unmistakable impact on cloud formations and weather.»
A large portion of secondary organic aerosols - tiny particles in the air we breathe that contribute to cloud formation and precipitation - arise from a combination of man - made pollution and molecules given off by plant matter.
Press release (emphases added):... scientists have succeeded for the first time in directly observing that the electrically charged particles coming from space and hitting the atmosphere at high speed contribute to creating the aerosols that are the prerequisites for cloud formation.
Formation of nitrogen - and sulfur - containing light - absorbing compounds accelerated by evaporation of water from secondary organic aerosols
However, because of its acidity, H2SO4 (and potentially MSA) can enhance the formation and growth of secondary organic aerosol (SOA) from organic compounds (5, 44, 45), including those produced by homogeneous nucleation of low - volatility species (46).
The suggested hypothesis, is that in regions devoid of dust (e.g., over the large ocean basins), the formation of cloud condensation nuclei takes place from the growth of small aerosol clusters, and that the formation of the latter is governed by the availability of charge, such that charged aerosol clusters are more stable and can grow while neutral clusters can more easily break apart.
One positive effect of burning coal is the formation of sulfate aerosol particles which help in reflecting incoming sunlight away from the earth.
Later, the enhancement of atmospheric aerosol particle formation by ions generated from cosmic rays was proposed as a physical mechanism explaining this correlation.
New information from dedicated recent and future field campaigns is expected to shed light on organic aerosol formation processes and how they are altered in the presence of anthropogenic pollution.
The successful candidate will study secondary organic aerosol (SOA) formation from the oxidation of biogenic volatile organic compounds (VOCs).
The Indirect and Semi-Direct Aerosol Campaign (ISDAC) field campaign, deployed from Barrow, Alaska, on a Canadian National Research Council Convair - 580 jet in April 2008, provided improved observations of two new cases of single - layer, mixed - phase, stratiform clouds that are well - suited to test our understanding of ice formation.
One involves deflecting a small amount of the sun's light and heat away from the planet to lower global temperatures; this could include the use of reflective aerosols or mirrors high in the atmosphere, or may require the deliberate formation of clouds.
Sulphur emissions from fossil fuel combustion lead to the formation of aerosols that affect regional climate and precipitation patterns and also reduce radiative forcing.
In the article «Global atmospheric particle formation from CERN CLOUD measurements,» sciencemag.org, 49 authors concluded «Atmospheric aerosol nucleation has been studied for over 20 years, but the difficulty of performing laboratory nucleation - rate measurements close to atmospheric conditions means that global model simulations have not been directly based on experimental data.....
Heterogeneous ice nucleation on atmospheric aerosols: a review of results from laboratory experiments / C. Hoose & O. Mohler Institute for Meteorology and Climate Research — Atmospheric Aerosol Research, Karlsruhe Institute of Technology, Karlsruhe, Germany / Published: 29 October 2012 Abstract: A small subset of the atmospheric aerosol population has the ability to induce ice formation at conditions under which ice would not form without them (heteroge - neous ice nucleAerosol Research, Karlsruhe Institute of Technology, Karlsruhe, Germany / Published: 29 October 2012 Abstract: A small subset of the atmospheric aerosol population has the ability to induce ice formation at conditions under which ice would not form without them (heteroge - neous ice nucleaerosol population has the ability to induce ice formation at conditions under which ice would not form without them (heteroge - neous ice nucleation).
My studies range from detailed aerosol processes such as the formation of secondary organic aerosols (SOA), to centennial time scale climate variability related to natural variability and external forcings.