Sentences with phrase «reactive gas»

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

But methane is a reactive gas and its presence leads to other greenhouse forcings, like the water vapor it decomposes into.

Absent the biological generation of the reactive gas, fossil fuel burning could contribute but little to the environmental evolution of the Anthropocene.

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

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).

Seen from space humans, trees, elephants, or even whales are undetectable and unremarkable, yet Earth would reveal its secret to an outside observer through the surprising abundance of a highly reactive gas, molecular oxygen.

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.

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.

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.

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.

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.

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.

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

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.

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?

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

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.

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.»

Consequently, the most advanced climate models now require, in addition to concentrations or emissions of greenhouse gases (CO2, CH4, N2O and halocarbons), emissions of reactive gases and aerosol precursor compounds (SO2, NOx, VOC, BC, OC and NH3), to model atmospheric chemistry and interactions with the climate system.6 For most variables, a sectoral differentiation would improve the quality of the calculations (e.g. from power plants and agricultural burning).

Most CM experiments based on RCPs will be driven by greenhouse gas concentrations (Hibbard et al. 2007).8 Furthermore, many Earth system models do not contain a full atmospheric chemistry model, and thus require exogenous inputs of three - dimensional distributions for reactive gases, oxidant fields, and aerosol loadings.

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

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.»

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).

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.

Not exact matches

But the Miller - Urey results were later questioned: It turns out that the gases he used (a reactive mixture of methane and ammonia) did not exist in large amounts on early Earth.

Like Earth's atmosphere, Titan's is largely nitrogen plus one more - reactive compound and some trace gases (see diagram).

After the gas builds up in the atmosphere each night, sunlight quickly transforms it into reactive molecules called free radicals.

«Without a membrane, the photoanode and photocathode are close enough to each other to conduct electricity, and if you also have bubbles of highly reactive hydrogen and oxygen gases being produced in the same place at the same time, that is a recipe for disaster,» Lewis says.

What she came up with was, as the study describes it, «the first comprehensive and consistent estimates of the global emissions of greenhouse gases, particulate matter, reactive trace gases, and toxic compounds from open waste burning.»

Furthermore, it is likely that Miller and Urey erred by simulating Earth's early atmosphere with gases containing hydrogen, which reacts easily, as opposed to carbon dioxide, a gas that is far less reactive but was probably far more plentiful at the time.

On Pluto, ultraviolet light from the sun breaks apart gas molecules like nitrogen and methane to create reactive ions.

The finding suggests that microbes with the ability to produce oxygen were prolific at least locally around 3.46 billion years ago, releasing large quantities of this reactive molecular gas into the oceans and eventually the atmosphere by the end of this period (more).

«Without a membrane, the photoanode and photocathode are close enough to each other to conduct electricity, and if you also have bubbles of highly reactive hydrogen and oxygen gases being produced in the same place at the same time, that is a recipe for disaster,» Lewis says regarding his findings published in PNAS.

With gasses, reactive chemicals, flammable products, and more just waiting to explode, it wouldn't be a wonder that the employee of the Pharmaceutical Industry feels like a bull in a china shop.

The more mindful and less reactive your driving style, the longer the brakes will last (and the better gas mileage you will get).

[1] The combined seeps in the field release about 40 tons of methane per day and about 19 tons of reactive organic gas (ethane, propane, butane and higher hydrocarbons); about twice the hydrocarbon air pollution released by all the cars and trucks in Santa Barbara County in 1990.

The two main ingredients are reactive halogen gases such as chlorine or bromine and sunlight.

The hydrogen was lost to space leaving highly reactive oxygen to combust reduced carbon (C and CH4) and sulphur (inc sulphide) to acid gases as well as oxidise near surface elemental or ferrous iron to ferric (red) iron.

Atmospheric chemistry governs the formation and removal of these gases and particles (unlike carbon dioxide, which is not reactive in the lower atmosphere).

On longer timescales, atmospheric composition and climate have been intertwined for billions of years, especially via methane, which is both a powerful greenhouse gas and is chemically reactive.

CO2 is an IR - reactive molecule, converting incoming radiant daytime IR energy to kinetic temperature energy thereby heating the surrounding N2 / O2 (non-IR reactive) atmospheric gases.

Specifically, this chapter will examine the relationships between the physical climate system and the land surface, the carbon cycle, chemically reactive atmospheric gases and aerosol particles.

The emission data were converted to concentration data, using a selected simple carbon - cycle climate model for well - mixed greenhouse gases and an atmospheric chemistry model for reactive short - lived substances.

Global warming is implicated in the loss of Arctic ozone because greenhouse gases trap energy lower down, heating up the atmosphere nearer the ground but cooling the stratosphere, creating conditions conducive to the formation of the reactive chemicals that break apart the three - oxygen molecules of ozone.

More nitrogen is now converted into reactive forms by industry than all by all the planet's natural processes and our industrial and agricultural processes are causing a continual build - up of long - lived greenhouse gases to levels unprecedented in at least the last 800,000 years and possibly much longer.

It does absorb infrared radiation and trap heat in the atmosphere, which is the definition of a greenhouse gas, but carbon monoxide is very reactive and soluble, so its molecules do not remain in the atmosphere for any significant time.

(1) Putting aside actual so - called fossil carbon (i.e. shales, coal, oil, gas tar sands) which are all relatively unreactive geologically overall (unless those pesky humans dig them up and burn them) there are in fact (today) substantial pools of potentially more reactive «fixed» carbon other than the active biosphere's biomass.

These human forcings include greenhouse gas emissions (e.g. CO2, methane, CFCs), aerosol emissions and deposition [e.g., black carbon (soot), sulfates, and reactive nitrogen], and changes in land use and land cover.

«Worse, trees emit reactive volatile gases that contribute to air pollution and are hazardous to human health.