Sentences with phrase «organosulfate aerosol formation»

Both nitrous and ammoniacal pollutants are continuously and rapidly accumulating in China's environment and contribute to aerosol formation.

They also found that streams of electrons and protons known as the solar wind, affecting Earth's global electric field, lead to changes in aerosol formation, which ultimately impact rainfall.

There they spread globally and can influence the composition of the air for many years — with far - reaching consequences for ozone chemistry, aerosol formation and climate.

Now that the researchers have the structure of alpha - pinene, they are better able to model the first steps of nature's aerosol formation in the atmosphere.

Whether these reactions produce condensing vapours that can condense onto the smallest particles or even molecules can have strong impacts on aerosol formation.

This includes the role of oxidized volatile organic compounds, such as limonene and alpha - pinene, the typical scents of the citrus fruits and coniferous forests, in aerosol formation.

In the journal «Angewandte Chemie,» Jokinen and co-workers report that auto - oxidation, which can, for example spoil plastics or food, also plays an important role in the atmospheric aerosol formation.

«Nighttime chemical evolution of aerosol and trace gases in a power plant plume: Implications for secondary organic nitrate and organosulfate aerosol formation, NO3 radical chemistry, and N2O5 heterogeneous hydrolysis.»

Study reveals discrepancy in approach commonly used to model organic aerosol formation at global scales

Her current application interests are rare earth and heavy element chemistry, catalysis, aerosol formation, cellulose degradation, and photochemistry.

Advanced measurements of aerosol formation and growth improve our understanding of the climate

At EMSL, the GA helps users advance molecular science in areas such as aerosol formation, bioremediation, catalysis, climate change, hydrogen storage, and subsurface science.

«We're not clear yet on what components of these emissions are the biggest contributors to ozone formation or aerosol formation,» says Coggon, «so that's what we'll be trying to figure out.»

(Does a correlation between ionization and aerosol formation in a lab experiment «demonstrate» a correlation between solar activity and aerosol formation in the atmosphere?

There is a significant amount of aerosol formation taking place with no ionization («background levels»), and when the sample air in the experiment was replaced, this caused a large jump (seen as a shift along the vertical axis) in the formation rate (the different colours in the figure above).

The figure further shows that the relationship between the ionization and the aerosol formation is not all that strong.

Solar activity impacts on climate are a fascinating topic, and encompass direct radiative processes, indirect effects via atmospheric chemistry and (potentially) aerosol formation effects.

Radiative transfer, aerosol formation, some aspects of cloud microphysics, ocean diffusion etc. — but the real world has many good experiments that the numerical models can be evaluated against (some mentioned above).

Yes, there are physical mechanisms to connect GCM's to aerosol formation — however, GCM's aren't the only forcing on the system.

Direct observational evidence linking atmospheric aerosol formation and cloud droplet activation.

Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States

A reduction of the solar wind during a prolonged solar minimum event would cause more galactic cosmic rays to enter the earth's atmosphere which would promote more aerosol formation thus more cloud nucleation.

Effect of pellet boiler exhaust on secondary organic aerosol formation from α - pinene.

This aerosol formation pathway may constitute an ice (microorganisms)- ocean - aerosol - cloud feedback.

Our main conclusion is that galactic cosmic rays appear to play a minor role for atmospheric aerosol formation events, and so for the connected aerosol - climate effects as well.

Here, we report unique observations on atmospheric aerosol formation based on measurements at the SMEAR II station, Finland, over a solar cycle (years 1996 — 2008) that shed new light on these presumed relationships.

Our analysis shows that none of the quantities related to aerosol formation correlates with the cosmic ray - induced ionisation intensity (CRII).

«Climate models will have to be revised, confirms CERN in supporting literature...» [I] t is clear that the treatment of aerosol formation in climate models will need to be substantially revised, since all models assume that nucleation is caused by these vapours [sulphuric acid and ammonia] and water alone.»

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 current focus of the program is aerosol radiative forcing of climate: aerosol formation and evolution and aerosol properties that affect direct and indirect influences on climate and climate change.»

Advanced measurements of aerosol formation and growth improve our understanding of the climate

They found that changes in atmospheric ionization during the 11 - year solar cycle, and the resulting variations in aerosol formation, produced a globally asymmetric radiative forcing with a net cloud albedo effect of − 0.05 W m − 2.

A semi-analytical method for calculating rates of new sulfate aerosol formation from the gas phase.

Secondary aerosol formation from atmospheric reactions of aliphatic amines.

Feulner's work is a reanalysis of Weber (2010), which strongly suggested that cosmic rays cause a large part of atmospheric aerosol formation.

Such mistakes can easily give the impression that cosmic rays induce aerosol formation.

Also, how is aerosol formation affected over cities by high level of ozone and peroxyacetyl nitrate (PAN)?

Nice post, but how does that compare to aerosol formation during the process of fossil fuel combustion (especially diesel and ship bunker fuel)?

The present 3 - D modeling study focuses on aerosol chemical composition change since preindustrial times considering the secondary organic aerosol formation together with all other main aerosol components including nitrate.

Timonen, H., Karjalainen, P., Saukko, E., Saarikoski, S., Aakko - Saksa, P., Simonen, P., Murtonen, T., Dal Maso, M., Kuuluvainen, H., Bloss, M., Ahlberg, E., Svenningsson, B., Pagels, J., Brune, W. H., Keskinen, J., Worsnop, D. R., Hillamo, R., and Rönkkö, T.: Influence of fuel ethanol content on primary emissions and secondary aerosol formation potential for a modern flex - fuel gasoline vehicle, Atmos.

Results of this measurement campaign indicate that alcohol fuels (E85, E100) significantly reduce both primary particulate emissions as well as subsequent secondary aerosol formation in the atmosphere when compared emissions of gasoline fuels.

«galactic cosmic rays appear to play a minor role for atmospheric aerosol formation events, and so for the connected aerosol - climate effects as well.»

I can think of many things that could cause this variability, say aerosol formation over the Atlantic connected to dust storms, sea ice changes due to changing wind patterns.

Not exact matches

She decided to study the role that organic particles play in cloud droplet formation, because a large proportion of marine aerosols — which have a significant climate impact — are organics.

The researchers do know that the presence of certain aerosols plays a large role in the formation of ice that leads to precipitation, but they also need to tease out the importance of that with other factors, like the amount of available water vapor and vertical storm winds.

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.

The aerosols catalyze the formation of ice in the clouds, which could increase precipitation, although more research needs to be done on that linkage, Creamean said.

CLOUD has also investigated how the 11 - year solar cycle influences the formation of aerosol particles in our present - day atmosphere.

Atmospheric aerosols are tiny particles that scatter and absorb sunlight but also influence climate indirectly through their role in cloud formation.

Their stickiness makes it hard to get them through an inlet into a measuring device, but these compounds may play a significant role in the formation and alteration of aerosols, tiny airborne particles that can contribute to smog or to the nucleation of raindrops or ice crystals, affecting the Earth's climate.