Sentences with phrase «aerosol particles form»

CLOUD is designed to understand how new aerosol particles form and grow in the atmosphere, and their effect on clouds and climate.

The index of refraction and an average size of the aerosol particles formed are close to those characteristic of the natural stratospheric aerosol.

Not exact matches

A key giveaway that aerosols were behind the effect was that the lightning was most pronounced at times of the year when powerful atmospheric convection currents form that can carry the aerosol particles high into the sky (Geophysical Research Letters, doi.org/cc7b).

Aerosol particles influence Earth's climate through cloud formation: Clouds can only form if so - called cloud condensation nuclei (CCN) are present, which act as seeds for condensing water molecules.

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).

The difference in lightning activity can't be explained by changes in the weather, according to the study's authors, who conclude that aerosol particles emitted in ship exhaust are changing how storm clouds form over the ocean.

And the way those droplets form - with scarce or plentiful aerosol particles - could have serious implications for weather and climate change.

There are few absolutes in life, but Will Cantrell - professor of physics at Michigan Technological University - says this is one: «Every cloud droplet in Earth's atmosphere formed on a preexisting aerosol particle.»

Sulphate pollution from power stations and factory chimneys produces aerosol particles in the atmosphere which encourage clouds to form.

Clouds need tiny particles called aerosols that rise in the atmosphere, in order to form.

The tiny aerosol particles can originate from e.g. dust, pollen or sea spray, emitted straight into the atmosphere or they can be formed from precursor gases.

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.

Ice nuclei, a type of aerosol particle in the atmosphere, form the ice crystals in mixed - phase clouds.

Possible reasons revolve around tiny natural and manmade particles called aerosols that serve as seeds for cloud droplets to form around.

Incoming energy, which comes primarily from the sun, is turned into various forms of absorbed energy, depending on terrain and atmospheric conditions such as clouds and aerosol particles.

Airborne particles in the form of naturally occurring dusts and human - produced aerosols can serve as ice nuclei, sites around which water vapor condenses into clouds.

The organic aerosol particles that coat the toxic hitchhikers are wafted into the atmosphere through emissions from trees (like those that produce the smell of pine trees), and burning biomass and fossil fuel to form a semi-solid sap - like casing surrounding and protecting the particle's payload from breaking down in the atmosphere.

Coupling these new measurements with detailed cloud simulations that resolve the size distributions of aerosols and cloud particles, we found several lines of evidence indicating that most anvil crystals form on mid-tropospheric rather than boundary - layer aerosols.

But the team found that the smoke and cloud layers are closer together than expected so that aerosol particles from the smoke act as nuclei for cloud droplets to form around.

«The results also show that ionisation of the atmosphere by cosmic rays accounts for nearly one - third of all particles formed, although small changes in cosmic rays over the solar cycle do not affect aerosols enough to influence today's polluted climate significantly.»

The cosmic ray particles work let's say like a «glue» that puts together all the already formed condensation nuclei in the atmospheric air, creating therefore bigger condensation nuclei and finally the clouds, or the cosmic particles act as aerosols on their own, on which the water vapour condenses?

With regard to the actual content of the press release quoted, it isn't clear if the process they report on (aerosol particles, particularly organic chemicals, getting smaller over time) makes them better or worse at forming clouds and their other atmosphere cooling functions.

Large volcanic eruptions eject sulfur dioxide, which rapidly forms tiny particles in the air known as «aerosols» that block sunlight.

Before a cloud can produce rain or snow, rain drops or ice particles must form and aerosols often serve as the nuclei for condensation.

Generally, the trend has been attributed to an increase in sulfur pollution, which rapidly forms tiny particles in the air known as «aerosols» that reflect incoming solar energy back into space.

Here, gasses react with water to form aerosol particles that linger in the stratosphere for one or two years, reflecting sunlight and heat from the sun, and cooling the planet.

For convenience the term aerosol, which includes both the particles and the suspending gas, is often used in this report in its plural form to mean aerosol particles.

Recently it was suggested that the formation of new atmospheric aerosol particles is connected with the existence of thermodynamically stable 1 - to 2 - nm clusters, formed in the atmosphere by some nucleation mechanism.

The team found the terpenes react in the air to form tiny particles called aerosols.

Study helps narrow down one reason why clouds are hard to model From the DOE / PACIFIC NORTHWEST NATIONAL LABORATORY RICHLAND, Wash. — Airborne particles known as «aerosols» strongly impact the way clouds form and change, but accurately capturing this effect in computer climate models has proved to be notoriously difficult.

Organic aerosols are emitted as primary aerosol particles or formed as secondary aerosol particles from condensation of organic gases considered semi-volatile or having low volatility.