Sentences with phrase «precursor gases»
The phrase "precursor gases" refers to gases that are released into the air and are involved in processes leading to the formation of other substances, such as pollutants or chemicals. These gases act as starting or building blocks for the creation of these substances. Full definition
So its amount depends not only on temperature and amount of sunshine but also the presence of precursor gases such as nitrogen oxide.
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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.
Global climate models are essential tools for understanding climate change and for developing policy regarding future emissions of greenhouse gases, primary aerosol particles, and aerosol precursor gases.
And structures must be fabricated from the substrate surface up at continually decreasing growth rate and from a limited number of precursor gases available.
All pieces required for the representation of OA in a global climate model are sketched out with special attention to Secondary Organic Aerosol (SOA): The emission estimates of primary carbonaceous particles and SOA precursor gases are summarized.
Ground - level ozone is a secondary pollutant, meaning that it is not emitted directly, but forms when sunlight triggers reactions between natural and human - caused chemical emissions, known as ozone precursor gases.
Scientists have understood that the precursor gases that form ozone have been declining in North America and Europe since the 1990s, but levels have been increasing in Asia.
When the solution is heated, the dissolved ammonium carbonate and related salts decompose into their precursor gases, enabling easy removal.
They found that the ELVOC formation happens very fast and that the chemical structure of the precursor gases determines how effectively they form ELVOC's.
«In a vacuum, we distribute a precursor gas containing platinum and carbon atoms over a substrate.
Those precursor gases come from manmade sources like fossil fuel combustion and production, biofuel combustion, industrial processes and biomass burning.
Scientists estimate that at least 30 percent and as high as 50 percent roughly 30 - 40 percent of the manmade increase in average global temperature measured to date is a function of climate destabilizers other than CO2, including methane, soot, tropospheric ozone precursor gases, and deforestation.