Sentences with phrase «reactive gases»

Any chemically reactive gas, whether a greenhouse gas or not, will produce some level of indirect greenhouse effect through its impact on atmospheric chemistry.

Consequently, massive amounts of reactive gases such as oxygen, hydrogen, and methane are continually being added to Earth's now «anomalous» atmosphere faster than they would otherwise be removed by inorganic chemical processes.

Yet Earth, the only planet with life, has maintained a fifth of its atmosphere as this highly reactive gas for hundreds of millions of years.

The team assessed the complex ways in which reactive gases emitted by forests can impact our climate.

Our products are derived from our core competencies in pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, residual gas analysis, leak detection, control and information technology, ozone generation and delivery, RF & DC power, reactive gas generation, vacuum technology, photonics, sub-micron positioning, vibration isolation and optics.

Emissions of carbon dioxide, methane, nitrous oxide and of reactive gases such as sulphur dioxide, nitrogen oxides, carbon monoxide and hydrocarbons, which lead to the formation of secondary pollutants including aerosol particles and tropospheric ozone, have increased substantially in response to human activities.

Sudden stratospheric warming can significantly alter temperature - dependent chemical reactions of ozone and other reactive gases in the stratosphere and affect the development of such features as «ozone holes.»

«We found that the cooling impacts of these gases outweigh the warming impacts, meaning that reactive gases given out by forests have an overall cooling effect on our climate.»

NOx gases represent some of the most reactive gases produced from diesel combustion and other fossil fuels, but the emissions limits for nitrogen dioxide are regularly exceeded, especially in urban areas.

Nitric oxide or NO (naturally found in the body) is a highly reactive gas molecule, that has a role of transporting information between cells (neurotransmitter).

Several chemically reactive gases CO, NOx (= NO+NO 2), and VOC control in part the abundance of O3 and the oxidising capacity (OH) of the troposphere.

For example, early global chemical modelling results argued that global tropospheric ozone, a greenhouse gas, was controlled by emissions of the highly reactive gases nitrogen oxides (NOx), carbon monoxide (CO) and non-methane hydrocarbons (NMHC, also known as volatile organic compounds, VOC).

An international team of scientists, led by the University of Leeds, studied the way that reactive gases emitted by trees and vegetation affect the climate.

Historical (1850 - 2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols: Methodology and application.

For reactive gases, ozone precursors and aerosols (CH4, SO2, NOx, NH3, CO, VOC, BC, OC), the atmospheric chemistry model CAM3.5 (Community Atmosphere Model (Gent et al. 2009)-RRB- was used to generate gridded concentration data as input for the climate models that need these fields.

E.g. (from the CV on his website): «The coexistence of abundant oxygen with methane and other reactive gases, are conditions that would be impossible on a lifeless planet.»

From inside the R2R RIE, the copper element applies an electric field to one of the electrodes in order to break down chemically reactive gases, like fluorine, into a plasma.

In the parlance of astrobiologists, the highly reactive gas is a potent «biosignature,» because in large concentrations it tends to be «out of equilibrium» with its surroundings.

Their research, published today in Nature Communications, found these reactive gases cool our climate, meaning deforestation would lead to higher temperatures than previously anticipated as less of the gases would be created.

Study co-author, Dominick Spracklen, Professor of Biosphere - Atmosphere Interactions: «Scientists have known for a long time that trees emit reactive gases to the atmosphere.

But the reactive gases emitted by trees can also increase the amounts of ozone and methane, both greenhouse gases which have warming effects on the climate.

So, the scientists are actively trying to understand how ocean biology might respond to changes in water circulation, nutrient supply, temperature and other factors, all of which could influence the reactive gas emissions and, in turn, feed into the chemical cycles that further influence climate through changes in greenhouse gases.

In that instance, the single smudge of light would contain signs of both reactive gases.

They also produce more emissions, such as nitrogen oxides (NOx), a group of reactive gases that are regulated at the state and federal levels.

Reactive gases would be a different story (NOx etc.) since the chemistry of the stratosphere is significantly different to the lower atmosphere — maybe that's what you are referring to?

In the absence of this reactive gas, our body wouldn't function.

Many scientists now believe that several of these gases, including methane and nitrogen oxides, are among the reactive gases that can directly or indirectly deplete ozone, Dr. Setzer said.

-- The reactive gas, OH, is a key chemical species that influences the lifetimes and thus RF values of CH4, HFCs, HCFCs and ozone; it also plays an important role in the formation of sulphate, nitrate and some organic aerosol species.

Models that attempt to perform reliable projections of future climate changes should account explicitly for the feedbacks between climate and the processes that determine the atmospheric concentrations of greenhouse gases, reactive gases and aerosol particles.

Historical (1850 — 2000) gridded anthropgenic and biomass burning emissions of reactive gases and aerosols: methodology and application