Sentences with phrase «ozone precursor gases»

The ozone season is selected because it is the part of the year with highest temperatures and strongest solar radiation and thus the time when photochemical reactions of ozone precursor gases are most likely to produce high ozone levels (Rice, 2014).

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.

Not exact matches

The researchers [3] quantified China's current contribution to global «radiative forcing» (the imbalance, of human origin, of our planet's radiation budget), by differentiating between the contributions of long - life greenhouse gases, the ozone and its precursors, as well as aerosols.

This development has raised concerns regarding emissions of greenhouse gases, air toxics, and precursors to ozone and fine particle formation.

There are enough health - damaging pollutants in the air today such that, if they (tropospheric ozone, its principal precursor methane, black soot, and some other trace gases that contribute to the global warming) were reduced by feasible amounts, the planet's energy balance could be restored, or nearly so.

The transportation sector produces one - third of U.S. greenhouse gas emissions, and automobile exhaust also contains precursors to fine particulate matter (PM2.5) and ground - level ozone (O3), which pose threats to public health.

«We use 1280 years of control simulation, with constant preindustrial forcings including constant specified CO2, and a five - member ensemble of historical simulations from 1850 — 2005 including prescribed historical greenhouse gas concentrations, SO2 and other aerosol - precursor emissions, land use changes, solar irradiance changes, tropospheric and stratospheric ozone changes, and volcanic aerosol (ALL), following the recommended CMIP5 specifications.

Because methane and VOCs are both ozone precursors, and are released by many of the same sources in the oil and gas sector, reductions will help reduce tropospheric ozone.

Though not a greenhouse gas itself, NO is a precursor to ozone, which when formed in the lower atmosphere, is a greenhouse gas and major pollutant.

[Response: For any projection for the future of climate, you obviously need a projection of emissions (greenhouse gases, ozone and aerosol precursors, etc.), land use change and so on.

Topics that I work on or plan to work in the future include studies of: + missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in - cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen + missing aerosol parameterizations, such as the effect of aerosol mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in - canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability + the change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas - phase chemistry via photolysis rates changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas - phase species like ozone + the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols + aerosol - cloud interactions, which include cloud activation, the aerosol indirect effect and the impact of clouds on aerosol removal + changes on climate and feedbacks related with all these topics In order to understand the climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol changes in the atmosphere on the terrestrial biosphere, the ocean and climate.