Ground-level ozone (O3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere)...

ozone a potent respiratory hazard and pollutant near ground level, a higher concentration in the ozone layer (from two to eight ppm) is beneficial, preventing...

instance, methane is emitted by the digestion of food by cattle, causing ground-level ozone. Practices like slash-and-burn in forests like the Amazon cause large...

creation of NO2 is the critical step leading to low level ozone formation, it also increases this ozone in another, somewhat mutually exclusive way, by reducing...

containing Ground level Altitude above ground level, in aviation Ground (disambiguation) Ground-level ozone Ground-level power supply, in rapid transit Level (disambiguation)...

present at significant levels in Earth's atmosphere and also known as dioxygen or triplet oxygen. Another is the highly reactive ozone (O3). Others are: Atomic...

country where these events already occur. Effects on air quality – Ground level ozone (the main component of smog) can induce chest pain, coughing, throat...

paints and paint thinners and other uses. Ozone is beneficial in the upper atmosphere, but at ground level ozone irritates the respiratory system, causing...

1999 Gothenburg Protocol to Abate Acidification, Eutrophication and Ground-level Ozone (known as the Multi-effect Protocol or the Gothenburg Protocol) is...

of sunlight. Ground-level ozone is harmful to human health and the environment. Though the same chemical substance, ground-level ozone should not be...

The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration...

Ozone depletion consists of two related events observed since the late 1970s: a lowered total amount of ozone in Earth's upper atmosphere, and a much...

through undamaged skin and lungs. It contributes to the formation of ground-level ozone, which is toxic in low concentrations. Butanone is listed as a Table...

gives smog its brown coloration and catalyzes production of toxic ground-level ozone (O3). Molecular oxygen (O2) also serves as a photoinitiator in the...

Houston has excessive ozone levels and is routinely ranked among the most ozone-polluted cities in the United States. Ground-level ozone, or smog, is Houston's...

contaminants do not have an associated AQI. Many countries monitor ground-level ozone, particulates, sulfur dioxide, carbon monoxide and nitrogen dioxide...

the exterior radiator surface which converts up to 75 percent of ground level ozone in the radiator cooling air into oxygen, while the Interior Air Quality...

and the ground level ozone created by NO. NO and NO 2 are not greenhouse gases, whereas N 2O is. NO 2 is a precursor to ground-level ozone. In October...

The National Ambient Air Quality Standards (NAAQS) govern how much ground-level ozone (O3), carbon monoxide (CO), particulate matter (PM10, PM2.5), lead...

referred to as the ozone season, when ground-level ozone concentrations are highest. In March 2008, EPA again strengthened the 8-hour ozone standard to 0.075...

of ozone pollution in urban areas worse. This raises heat-related mortality during heat waves. During heat waves in urban areas, ground level ozone pollution...

NOx in the eastern United States, which causes a 2 ppb increase in ground level ozone during high temperature events in addition to soil acidification,...

is based on the observed relationship of nitrogen dioxide (NO2), ground-level ozone (O3) and fine particulate matter (PM2.5) with mortality from an analysis...

that form secondary pollutants such as fine particulate matter and ground level ozone. Downwind effects in airsheds are responsible for the spread of those...

(VOCs), a group of chemicals that contribute to the formation of ground-level ozone (smog). The combustion of fossil fuels produces greenhouse gases and...

organic compounds (VOC). Studies show they are likely to facilitate ground level ozone formation and increase photo-chemical smog. In aquatic bodies, they...

ammonia, moisture, and other compounds to form the noxious vapors, ground level ozone, and particles that comprise smog. Photochemical smog, often referred...

strategies to reduce short-lived climate pollutants (HFCs, black carbon, ground level ozone, methane), in the context of the need for speed to limit anthropogenic...

matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, asbestos, ground-level ozone, lead (from aircraft fuel, mining, and industrial processes) The EPA...

air quality through the formation of secondary pollutants such as ground level ozone and secondary organic aerosol. The emissions from solid fuels are...