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Pennsylvania
Bureau of Air Quality

Monitoring Acid Rain

Acid Rain and Mercury Isopleth Maps

Acid Rain

Clean Air Act
Isopleth maps, like the one below, are handy in showing changes in the amount of acid rain resulting from legislative efforts such as Title IV of the Clean Air Act Ammendments. The below maps are from the 1995-2005 CAAA Reductions Report.

An Example of an Isopleth Map

Concentration Maps
Sulfate
Nitrate
pH

Deposition Maps
Sulfate
Nitrate
Hydrogen Ion

 

Pennsylvania Maps
The following maps were created from acid rain data collected during 2004.

 

Concentration
Hydrogen Ion
Sulfate Ion
Nitrate Ion
Ammonium Ion
Calcium Ion
Magnesium Ion
Potassium Ion
Sodium Ion
Chloride Ion

Wet Deposition
Hydrogen Ion
Sulfate Ion
Nitrate Ion
Ammonium Ion
Calcium Ion
Magnesium Ion
Potassium Ion
Sodium Ion
Chloride Ion

pH
Precipitation
Conductance

National Maps
The NADP generates nationwide maps from the results of their acid rain sampling network.

Mercury in Rain

Pennsylvania Maps
The following maps are from the 2005 Mercury In Rain Report

An Example of an Isopleth Map


Annual Hg Concentration and Deposition
Seasonal Hg Concentration
Seasonal Hg Deposition

National Maps
The NADP/MDN generates nationwide maps from the results of their mercury sampling network.

 

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Note:
All isopleth maps on this page, except were specified, were created by Dr. James Lynch and Jeffrey Grimm of the Penn State University, Environmental Resources Research Institute