Acid rain

Definition (http://www.eionet.europa.eu/gemet/concept?cp=51&langcode=en&ns=1)

Rain having a pH less than 5.6. The acidity results from chemical reactions occurring when water, sulphur dioxide, and nitrogen oxides, generally released by industrial processes, are chemically transformed into sulphuric and nitric acids. (Gemet)

Preferred Units: N/A

Scope Note:
N/A

This term is used for the following terms: 
Acid precipitation

Approved Date
21-Feb-2014

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