Air pollution not only causes adverse health effects and environmental damage, but also results in haze which impairs visibility. Haze is caused by particles that absorb and scatter light resulting in reduced visibility. Sources of particles are both naturally occurring (e.g., forest fires, volcanoes, etc.) or can be man-made (e.g., power plants, automobiles, etc.). The particles can be emitted by local sources or transported long distances before arriving in Maryland. Hazy conditions in the Eastern U.S. are generally caused by regional man-made sources. For this reason, in 1999, the Environmental Protection Agency (EPA) issued regulations to address regional haze and restore visibility to its natural conditions for 156 national parks and wilderness areas (http://www.epa.gov/air/visibility/program.html).
Real-time haze cam imagery for Baltimore and Frostburg are provided below. Additional haze cams in the Mid-Atlantic and Northeast are available through CAMNET website. The last 12 hours of the Baltimore haze cam imagery (Key Bridge view) can be seen in the animation below.
Baltimore, MD Wide Angle Haze Cam
Frostburg, MD Haze Cam
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