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What is Acid Rain?

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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Glossary

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A type of cloud consisting mostly of small particles such as ice particles.

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...