Lincoln Severe Watches & Warnings NOAA Weather Radio

Public Information Statement
Statement as of 5:43 am CDT on April 28, 2015

... This is air quality awareness week...

This week Marks the beginning of the ozone season for many areas in
the United States.

Today we highlight the causes of poor air quality. Your air quality
can vary... depending on how much air pollution is produced in your
community. How much pollution is carried into your community by the
wind and by weather conditions.

Ozone forms when two groups of key pollutants... nitrogen oxides and
volatile organic compounds Cook in the sun. Particle pollution can
be directly emitted for example in smoke from a wood stove... but a
lot of particles form when gases react in the air. Nitrogen oxides
and sulfur dioxides contribute to particle formation. These ozone
and particle forming pollutants come from a wide variety of sources
including cars... trucks... buses... power plants and industries.

Natural sources such as wildfires and dust storms contribute to
particle pollution. Trees and other vegetation also Emit organic
compounds that contribute to particle and ozone

Weather plays a big role in The Levels of ozone and particle
pollution in your community. Sunlight and heat promote ozone
formation. Light winds and temperature inversions can keep pollution
concentrated near the ground. Depending on its direction... the wind
can bring in more pollution... sometimes from hundreds of miles away.
Geography can affect pollution levels too. Mountain ranges can
prevent pollution from dispersing.

Tomorrow we will learn about the health impacts of poor air

For more information on air quality awareness week... visit US
on the world wide web at www.Airquality.NOAA.Gov.

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