Basic precipitation

As a basic rain refers to precipitation, the pH value is higher than the pH value in pure water by the natural carbon dioxide content of the atmosphere adjusts itself (

Alkaline rain is thus the counterpart to the acid rain dar. In contrast to this basic rain occurs only when local or temporary phenomenon.

Basic cause of rain is usually the emission of large amounts of alkali dust in the atmosphere. This can, for example, be caused by:

• Large-scale forest - steppe fires or, (ash is alkaline).
• Volcanic eruptions or volcanic explosions of Tuffvulkanen in which large amounts basic tephra are ejected. ( In general, however, outweigh the simultaneous emission of acidifying gases, particularly sulfur dioxide, so that the total precipitation mainly acidic fails. )
• Industrial production is one of alkalis with poor dust from the exhaust gases, in particular lime, cement or gypsum production

• Precipitation